Keep in mind that this might not be always that easy. Some Laptops communicate with the power adapter to find out the specs and adjust power consumption respectively. I tried powering my Dell with an off brand power supply that doesn't have this feature and my Laptop acted weird: Processor stayed in it's lowest power state, it wouldn't use it's dedicated graphics card and battery was not charging. Everything was slow and choppy. As soon as I disconnected that power supply (making it run on battery) everything was fine. Also when I reconnected the original power supply it worked properly. So your mileage may vary. Good video though!
Battery charging problem was because of a missing sensor that is used in dell laptop's adapter i have made similar power bank for my dell laptop firstly laptop turns on but not charging battery afterwards i get that sensor from a burnt dell charger now my its charging my laptop battery too.
Cos dell are dicks. The psu has chip that tells the bios it ligit. If the bit built in the laptops bios is broke, even a legit dell chargers wont work.
I made something like this last year for my school laptop. It was a 6s2p 18650 pack with a cheap low voltage cut off switch before going to a cheap buck boost converter. I hacked up a CAD model for the enclosure and 3D printed it. I use 2 old 16 amp Xbox 360 PS in series to charge it through an XT60 connector(even though it undercharges the pack by about a volt or two). It’s neat to see some other ideas regarding a setup like this, and congrats on one million subs!
Next Video should be for a desktop computer for power outages. UPS (Uninterrupted Power Supply) Include a low battery system to inform the desktop to start shutting down to prevent damage of a sudden power cut.
you could use an atx converter plug that converts 12 or 19v to 3-5-12 then wire it to a battery then wire a charger to it so it keeps charging then when you have a power outage the battery continues to power the pc . but the issue is if its a gaming pc then the atx psu module wont handle it im not sure what they are called but its the 24pin motherboard power block where you get in an itx pc what can run off 12v batteries .
Excellent work once again. Just a tip: you could add a few USB ports just for charge any additional devices on the go, without carrying another powerbank.
Congratulations to 1 Million Subs! Its so great that my favorite Electronic RUclipsr I i know from the start all the way to 1 Million ^^ Great Job Great Scott!
wow, what a fantastic tutorial. not only it served its main educational purpose well, it's very practical, beginner friendly, and along the way, it solved a very common power shortage problem. and not to say, we can easily modify the project to better fit our own personalized needs, like larger capacity or smaller profile, and i assume it wouldn't be so hard to add extra couple of usb outputs to charge other devices, like phones, etc... anyway, great project all around, thanks, Scott.
They will look at you veeeery weird if you try to bring a powerbank that does not look commercial regardless of size. Or any other 3d printed box full of wires and displays. Personal experience.
@@bardenegri21 I've taken some pretty weird projects on flights. I tell them up-front what it is. It usually spends some extra time in the X-ray, but that's all. My wire strippers, on the other hand, were confiscated because the handles were too long.
Bro, I love your vids, but I often start with "Ok, maybe this time I can do it, I CAN DO IT!"... just to sadly realize many of your tuts are almost past the level of intermediate. Half way I just stop watching. In this case, it sounds like you're making a pack *SPECIFICALLY FOR THAT LAPTOP MODEL SPECS* Nice vid though.
His videos are mostly for ideas and not the actual tutorial. 19.5V will work on most laptops. Unless it's some small and old one that works at 16 or 12V
Great build, thanks for sharing! At a company I once worked for, we used to use laptop battery power packs for a product we built for members of the security services working in airports. I can't say what the work was or much about the product, because military secrets, but the laptop (and other, erm, electronics) was housed in a modified Samsonite briefcase which was then suspended in a Samsonite suitcase (don't ask, I just said I can't tell you). Long story short, the power pack was heavier than the laptop and cost nearly twice as much, but guaranteed a good (but unspecified) number of hours of continuous use, doing, erm, things that require power.
I did the same project a couple of years ago, but with a larger battery bank. Mine was set to 19V, 6.5A. The problem was that my laptop is a Dell and like with most newer Dell laptops, the power adapter has 3 connectors, a positive wire (innermost), a negative wire (outermost), and a data wire (central pin). The data wire allows the laptop for recognition of the power adapter. It is done that way because Dell manufactures several power adapters of different watt ratings, but all with the same connector. In order for the laptop to tell if the connected power adapter is the right one, the data wire must have a specific signal. Pretty much like Samsung chargers recognized as "Fast Chargers" because of a signal present in the connector. Otherwise, the power supply WILL power the laptop, but will NOT charge the battery. So research had to be done to add the needed data to my project and I just let it sit there and did nothing else due to lack of time. The project is nice, but will definitely not work for all, unless it is used as an alternative power source instead of a battery charger.
I asked for a video like this over a year ago in a pm to you, I was politely told if I did everything people wanted I’d never get my own projects done. Still happy to see it
Most newer laptops have a system built in where when you're not using a high-power application, it uses the iGPU instead of the dedicated. But i feel that they should harshly turn down the CPU clock as well and limit power draw even more
Surprised I'm not seeing comments saying this so I will: Why not just buy another laptop battery? Non-apple brands are typically decent to get parts for. Lenovo for example makes it super easy to buy parts. Just buy another battery and swap them out. Now the argument someone may make about the adhesive on the battery. You have two options, one, don't use it, two, use Velcro. I'm sure you can also figure something else out.
Nice project. But why charging a battery with a battery? It is a bit waste of energy. I found out that at a slightly lower voltage most of my laptops do work fine but don't charge. Just put the buck-converter a little lower and you have it. Thus you can have a longer runtime on the external pack while keeping your internal battery full. I only had to drop it by 0.1 Volt below charging-voltage to archieve this. Second good thing is that the I is getting lower too so there is less heat in the converter and external battery which gives an even longer running time.
......May I answer...this....first thing.. Well maybe I want to simply have more energy on the go....even tho if he only made it for his Laptop you know..coulda just bought another battery...
You can also plug your power bank when your battery is full, this way you'll consume only what the laptop needs, and when your power bank is flat, you still have your full laptop battery.
Good idea finding the below charging voltage. I'll have to look into that. Surprised I've not seen someone hack a pack into a huge portable docking station size battery pack. That would be something different.
@@jafinch78 Back when I was a poor college student I had an old siemens laptop that ran perfectly happily directly off of a 7Ah lead acid battery lol. Didn't charge but I didn't want it to, so worked out pretty perfect. I used to get some odd looks though haha
@@SuprSi You're motivating me to look for either a T42 or X200 docking station and try what I mentioned above out to make a docking station battery pack. Might even be able to 3D print also... I'm not sure about thermal issues though. The pricing isn't too bad building the hypothetical pack out of protected TP4056's, or maybe even I see cheap 2S modules cost effective, ganged together. I'll have to read into hacking into the existing battery packs protection circuit and plug specifications and see if I can find and old not working pack for connector with pins.
I think its important to note the output of the buck and boost converters are not temperature stable so you could potentially damage something under extreme temperature
I have the exact same laptop and had it since around 2016. my second psu is shot and now i wanted to build my own psu. damn cheap laptop psu are sold way too expensive and get hot af. thanks so much for this video!!!
I love how creative you are with everything electronic. each of your videos have something unique of you which is you write down important aspects and that always stands out to me. you make everything seem so easy fun and even entertaining I really enjoy that from you please continue to do that. you are amazing at what you do.
Seems easy to charge your laptop with the correct voltage. I have a Dell and the Charger needs a third line to communicate with the laptop. It supplies information about the wattage so the Dell can work with that. Otherwise it will refuse to charge for safety reasons. Using a 4S2P Pack with NCR1860B and a simple car charger. Only problem is, that I have to charge it with my RC battery charger.
If your laptop has USB-C you just need a commercial powerbank with USB-C Power Delivery (PD) support and enough output voltage (usually 12 or 15 volts). Keep in mind that still some laptops don't support charging over USB-C.
so cool. i'm glad my msi laptop (7rex) lasts almost 4 hours of just browsing the internet. one of these packs would be good for gaming on the go as it drains pretty quickly if not plugged in
+ play song with full volume, set display brightness to maximum, shorted out the usb port with resistor (draw a current to maximum), copying proses to make sure hdd is spinning in maximum rpm, burn a disc cd/dvd with maximum speed. anyone else?
this project poped into my head a couple of days ago, you made it quite hard for me to match your method, though , given me a drive to try it my way,thanks,
Just add an AC inverter on the output of the battery. But it would waste less power converting from AC to DC, if you just added the modual power supply connectors on the battery bank itself.
I seem to recall seeing a video where he tried that, but in the end he concluded that the Chinese can still do it cheaper and the only reason for making your own is if you either want to charge an odd number of cells or to charge them at a much higher charge rate than supported by the Chinese BMS circuits.
its more energy efficient to wire the cells in parallel with the laptops battery it takes about 5 minutes to connect the 2 together and only requires 4 wires for a 3S battery, you wont be losing that 30% efficiency
When you connect two battery packs together of different capacity the lower one will become a parasite as it discharges first and starts taking power from the larger cell. Efficiency can become worse.
@@lonjeloco in my experience, the capacities stack quite well as long as you are not connecting a 500mah cell with a 5AH cell If you are that worried about it, just make sure the cells you are connecting in parallel are of similar capacity to the cells in the original battery One of the benefits of wiring everything into the internal battery is that you can see the power level of everything on the windows battery meter (after you run it through a few charge cycles to calibrate it)
MWB Gaming Mixing old and new cells is the problem. That and it will take forever to charge as it was not designed to charge that many cells. The biggest issue is where to put the cells. Such a mod would make a machine less portable so it's stuck at a desk were it might as well been plugged in. Most laptops don't even use 18650 cells anymore. Hell buying a second battery is not even option anymore.
@@lonjeloco I did this mod with my Thinkpad T420s and now I get 12hrs of actual usage (about 6hrs on the battery eater classic test with the brightness all the way up) It weighs about 4KG and is twice as thick, but who gives a rats ass if it is twice as thick and twice as heavy, if it now gives upward of 6x the runtime I can still fit it into a backpack and carry it around all day without issue I have a 200wh+ main battery and a modified ultrabay battery with another 100wh and enough space for a gutted SSD (effectively using the SATA port and battery add-on at the same time) You can easily do this mod to any laptop with a non removable battery by drilling a small hole in the bottom panel for a plug or to run the wires through As for the charge time, what do you expect, it takes ages to charge, but it also takes ages to discharge A bigger fuel tank takes longer to fill with the same pump, the same logic applies to batteries The charging circuit limits the current to a safe level and will cut out if the charging system overheats
It lacks the cricuitry wich communicates with the laptop and that charges and balances the cells. You will neve be able to "make" a battery. And add that to the fact that many newer gaming laptops and even normal consumer laptops won't have removable batteries anymore, it makes your option impossible in every way
@@eduardoavila646 i still dont understand why removable batteries have disappeared i see no benefit in turning the device into an expensive paperweight when the battery dies (vs bringing a few spares with you and swapping them out as needed)
@@mwbgaming28 Well, in the user side: 1- Thinner devices 2- Water resistant devices (Both are absolute bullshit to me) a galaxy s5 for example breaks this water resistant mith. Thinner devices are a stupid idea, what does worth have a paper thin device that is only a bad paperweight? In the company side: 1- Hard repair, users cant thinker with the device to make it better or repair it, so it makes higher sales. 2- Devices last less, only last now the battery life, before you would replace it. So no need to sell and manufacture so much spare parts. 3- Cheaper to manufacture devices, without having to put a dedicated battery slot/place, and a battery shape wont need to be standard. 4- They sell way more powerbanks and acessories. So yeah, it's pretty much a advantage to the companies, not to the consumers.
I have done it in a very similar way. For the DC/DC converter i use LTC3780. They are smaller, with high efficency and they are buckboost. So you can use 18 V battery packs. As battery packs i use power tool batteries, separated by Schottky diodes. So i can hotswap them.
Congrats on the Million subscribers! This pack is a good idea for off the grid apps and for less noise emission. Can even connect with the solar panels (or other system) if specs match up. I wonder like Elvin Haak noted... if trimming the pack buck converter 0.1V below the charging voltage will work better and the laptop will still use automatically when the internal battery is too low.
Wonderful video. My 8-core laptop, (1 hour battery) loves you. The laptop I'm viewing this on also has a slider that will pop out the battery. I carry an 3 extra batteries around in my backpack. Which is what I would do with any laptop using an easy battery release. On the other hand, for the 8-core laptop you have to open the back and disconnect wires to replace the battery. Your video will come in handy. Thank you. Nowadays; at least in the Washington, D.C. area. All the malls, coffee shops, co-working spaces, most of the casual (indoor) dining spots, ... have wall sockets. So that you can plug in /recharge your devices. Now if they would only do that on buses and the Metro.
Yours videos as Always.. are awesome! clear english helps to understand almost everything, combined with very explained Project! Best eletronic channel on youtube!
Wow.This would charge my laptop ~3.8 times with an estimated efficiency of 80%.This gives me 7 hours of run time.I have a HP EliteBook laptop.It already has a nice run time on 33.3wh.
Here's the fun part - most swichmode power supplies (such as those used on laptops) will accept DC just fine, so long as its > output voltage, so you might have been able to simply hook up your battery directly to the AC input pins of the laptops stock power supply. Some will require the input voltage to be at least 30, 50, 60v or so but others wont. The main thing to keep in mind is that the rectification inside the power supply will likely be undersized for a lower input voltage at its max output power (ie 19v, 6A here) so for lower voltage batteries may eventually overheat/damage the power supply if used at high power a lot.
Buck converters can easily fail short. I have one of those exact buck converters but the current limit function didn't really work well and I don't trust the thing much. I would add a crowbar circuit to the output as a safety feature to prevent blowing up your laptop with 40V in case the buck converter fails (which can happen by either the MOSFET failing short, or the feedback pin gets shorted to 0V or otherwise breaks.) Also it would have been cool if your projects were custom schematics and you used your JLCpcb sponsor as part of the build to make custom boards for your projects! You could integrate all those discrete boards onto a single
Being using this method thru RC Hobby lipo to power my laptop 6 years ago until today due to internal batteries already dead. The only main issue is the buck converter generate quite some heat, my finger can't barely touch the heatsink of the converter after running it for 30 minute, and yet, the buck converter still works fine even it is hot.
I tried to do something similar before, but I choosed a Boost converter that, even If it could handle 150W and my laptop requires 120W, it heated to much and then it shutdown. Great video, maybe I'll do something similar
Congrats on 1M! Now, to have into account next time you try to disassemble your laptop: check into a way to remove the keyboard if it has screws, normally they have hidden screws hidden behind it, that's the common way they assemble laptops
For my part, I simply use a dewalt battery (20V MAX XR 5.0Ah Lithium Ion 100Wh) and a modified adapter (20V USB Power Source) which I added an XT-60 connector which I can connect the dc jack adapter for laptop. My HP laptop takes 19.5V input and the dewalt 5S baterry is around 20V fully charged so I don't use a regulator.
Almost every laptop from decent manufacturer these days has battery capacity of 7+ hours of non-stop usage, with some Apple, Lenovo and Asus devices even getting 10+ hours. Great build, I’m just doubting the actual real life necessity of such powerbank. Cheers!
Wow realy nice project, and it taked long I think to build, I was thinking how my laptop can last longer on battery, and here we are with laptop power bank, maybe I will build one!
Very useful for old laptop battery packs I still have. Hopefully mixing them will not be too much of a problem. Also, maybe you will consider taking screenshots of the parts list pages for archival purposes in case the item is no longer for sale. For instance once an Ebay seller stops selling an item, the page is not longer visible. (I tried to view the BMS you used from ebay but I could not find it.) Thanks Scott.
Du bist ein toller mensch!!! Honestly you have a gift for explaining this stuff and I swear you're psychic, because I have been hoping you'd make a video JUST like this. Thank you and I wish you the best of success 💪
nice video, but in your case another battery for the laptop will be just fine. and yes, like some other people pointing out, if I have a mbp or razer blade or any other laptops that are charging through a usb-c port, this method will not work and I will not suggest trying it. anyhow, a lot to learn from this video, congrats :)
You can also get a non-working battery pack that fits your laptop...remove all the contents...and make it a pass-through to use only 11.1VDC instead of 19VDC. That would bypass the charging circuitry and all the losses of that conversion. It would also make the external pack much smaller as you would need much fewer batteries. Or you could just change the configuration on the external pack to make it last longer with more batteries in parallel.
Awesome project, I used to think to build one of these with lower voltage output, but then I realized these days I can just buy one of these power bank that support "Power Delivery" and can pass airport security check
I'm really impressed with your in depth knowledge of electronics..Your videos always inspire me to make something innovative.. 🙌 I'm a beginner and just started making some electronic projects.. Can you please make a video explaining your journey and things to do to have a ocean of knowledge like you😅😄
great video i want to build one like this myself i have a ton of 18650's at the house from old power banks , i would add some usb 2.0 ports that can output 2.1 amps tho
FYI, it's cheaper to buy two separate laptop batteries that can be swapped and you can carry one extra instead of two which is easier on the weight, only down side is you need to plug the laptop to charger before you hot swap them, or if you don't have charger or outlet available it has to be shut down temporarily. Another down side is you don't know what type of cells you get from the non genuine cheapo laptop batteries or how long it will last since they have temperature protection fuses inside that can be set off by the laptop overheating, not necessarily by the batteries overheating themselves. Also if you go with this build there is efficiency loss with these boost and buck converters so it's about 30-10% energy loss.
You have the greatest, longest running sponsorship of all time
Haha thanks. I am happy working with them as well :-)
Juan JLC PCB
jlcpcb contacted me too. i've been lazy for my other channel. they pay $80 a vid... hard to say no
I mean... its a perfect fit.. since home tinkerers get cheap PCB's and Scott gets $.
It's even longer than LTT & Tunnelbear *sad Pikachu*
Your builds are getting more professional looking with each subsequent project. Keep up the great work!
Keep in mind that this might not be always that easy. Some Laptops communicate with the power adapter to find out the specs and adjust power consumption respectively. I tried powering my Dell with an off brand power supply that doesn't have this feature and my Laptop acted weird: Processor stayed in it's lowest power state, it wouldn't use it's dedicated graphics card and battery was not charging. Everything was slow and choppy. As soon as I disconnected that power supply (making it run on battery) everything was fine. Also when I reconnected the original power supply it worked properly.
So your mileage may vary. Good video though!
Battery charging problem was because of a missing sensor that is used in dell laptop's adapter i have made similar power bank for my dell laptop firstly laptop turns on but not charging battery afterwards i get that sensor from a burnt dell charger now my its charging my laptop battery too.
Same problem with my Dell laptop, it's a Dell thing mostly.
This might help explain it for you: hackaday.com/2014/03/03/hacking-dell-laptop-charger-identification/
@@jeffgrant935 Thanks!
Cos dell are dicks. The psu has chip that tells the bios it ligit. If the bit built in the laptops bios is broke, even a legit dell chargers wont work.
I made something like this last year for my school laptop. It was a 6s2p 18650 pack with a cheap low voltage cut off switch before going to a cheap buck boost converter. I hacked up a CAD model for the enclosure and 3D printed it. I use 2 old 16 amp Xbox 360 PS in series to charge it through an XT60 connector(even though it undercharges the pack by about a volt or two). It’s neat to see some other ideas regarding a setup like this, and congrats on one million subs!
Next Video should be for a desktop computer for power outages.
UPS (Uninterrupted Power Supply)
Include a low battery system to inform the desktop to start shutting down to prevent damage of a sudden power cut.
I will not make a mains voltage UPS
@@greatscottlab Ahhhh... I was really looking forward to a DIY or BUY of that.
May I ask why not?
Too dangerous obviously
you could use an atx converter plug that converts 12 or 19v to 3-5-12 then wire it to a battery then wire a charger to it so it keeps charging then when you have a power outage the battery continues to power the pc . but the issue is if its a gaming pc then the atx psu module wont handle it im not sure what they are called but its the 24pin motherboard power block where you get in an itx pc what can run off 12v batteries .
@@greatscottlab That will be a 230v inverter and there is a previous video on making a modified square wave and spwm inverters
Excellent work once again. Just a tip: you could add a few USB ports just for charge any additional devices on the go, without carrying another powerbank.
Congratulations to 1 Million Subs! Its so great that my favorite Electronic RUclipsr I i know from the start all the way to 1 Million ^^ Great Job Great Scott!
Thank you :-)
I Totally Agree
Looking forward to your drone projects :-)
Congrats!
I feel that was LONG over due.
I agree also👍☺ great video by the way☺
wow, what a fantastic tutorial. not only it served its main educational purpose well, it's very practical, beginner friendly, and along the way, it solved a very common power shortage problem. and not to say, we can easily modify the project to better fit our own personalized needs, like larger capacity or smaller profile, and i assume it wouldn't be so hard to add extra couple of usb outputs to charge other devices, like phones, etc... anyway, great project all around, thanks, Scott.
144 Wh pack.. guess you won't be taking it on a plane then?!
What is the limit?
@@greatscottlab I believe it's 100Wh
They will look at you veeeery weird if you try to bring a powerbank that does not look commercial regardless of size. Or any other 3d printed box full of wires and displays. Personal experience.
should not be above 100Wh per battery, and that too need to be taken in carry-on bag
@@bardenegri21 I've taken some pretty weird projects on flights. I tell them up-front what it is. It usually spends some extra time in the X-ray, but that's all. My wire strippers, on the other hand, were confiscated because the handles were too long.
Bro, I love your vids, but I often start with "Ok, maybe this time I can do it, I CAN DO IT!"... just to sadly realize many of your tuts are almost past the level of intermediate. Half way I just stop watching. In this case, it sounds like you're making a pack *SPECIFICALLY FOR THAT LAPTOP MODEL SPECS* Nice vid though.
His videos are mostly for ideas and not the actual tutorial. 19.5V will work on most laptops. Unless it's some small and old one that works at 16 or 12V
Great build, thanks for sharing! At a company I once worked for, we used to use laptop battery power packs for a product we built for members of the security services working in airports. I can't say what the work was or much about the product, because military secrets, but the laptop (and other, erm, electronics) was housed in a modified Samsonite briefcase which was then suspended in a Samsonite suitcase (don't ask, I just said I can't tell you). Long story short, the power pack was heavier than the laptop and cost nearly twice as much, but guaranteed a good (but unspecified) number of hours of continuous use, doing, erm, things that require power.
I did the same project a couple of years ago, but with a larger battery bank. Mine was set to 19V, 6.5A. The problem was that my laptop is a Dell and like with most newer Dell laptops, the power adapter has 3 connectors, a positive wire (innermost), a negative wire (outermost), and a data wire (central pin).
The data wire allows the laptop for recognition of the power adapter. It is done that way because Dell manufactures several power adapters of different watt ratings, but all with the same connector. In order for the laptop to tell if the connected power adapter is the right one, the data wire must have a specific signal. Pretty much like Samsung chargers recognized as "Fast Chargers" because of a signal present in the connector. Otherwise, the power supply WILL power the laptop, but will NOT charge the battery.
So research had to be done to add the needed data to my project and I just let it sit there and did nothing else due to lack of time.
The project is nice, but will definitely not work for all, unless it is used as an alternative power source instead of a battery charger.
Everybody gangsta. Until the laptop itself running outside the house. Its a e bike battery pack. Right?
CONGRATS ON 1 MILLION! YOU ARE THE GREATEST ELECTRONICS CHANNEL ON RUclips+
congratulations on 1 million subs. Well deserved achievement. And so much info in this excellent project.
I want to say that you are best and the best and the best channel in RUclips.Your production is so professional and satisfactory.Thanks so much.
I asked for a video like this over a year ago in a pm to you, I was politely told if I did everything people wanted I’d never get my own projects done. Still happy to see it
The quality of your work makes my heart warm.
Airport security loves these homemade things!
This is by far, your most useful video. I hope it gets millions of views.
Also, you should add a USB circuit, two USB sockets to the powerbank for charging smart phones.
This is my favourite video of all yours, it's right what i ever wanted to do, and at the moment i wanted to. Thank You Greatscott
The simple yet effective flex with the OP battery pack
Das ist natürlich der komplizierte deutsche Weg um dieses Problem zu lösen. Alle anderen Menschen hätten sich einfach ein zweiten Akku gekauft.
Overengineering Kann man bei viel neuen nicht geschwind wechseln
@@jan.feucht stimmt, aber bei seinem ja schon :D
Overengineering nach diesem Kommentar habe ich gesucht. Danke 😂
Natürlich 😂😂
it's funny because your name is overengineering
Most newer laptops have a system built in where when you're not using a high-power application, it uses the iGPU instead of the dedicated. But i feel that they should harshly turn down the CPU clock as well and limit power draw even more
Omg GreatScott! u have exploded! last time I watched you, you only hadd 1k subs! Congrats! Keep up your good work and keep inspiring young humans!
Surprised I'm not seeing comments saying this so I will:
Why not just buy another laptop battery? Non-apple brands are typically decent to get parts for. Lenovo for example makes it super easy to buy parts. Just buy another battery and swap them out.
Now the argument someone may make about the adhesive on the battery. You have two options, one, don't use it, two, use Velcro. I'm sure you can also figure something else out.
Nice project.
But why charging a battery with a battery? It is a bit waste of energy. I found out that at a slightly lower voltage most of my laptops do work fine but don't charge. Just put the buck-converter a little lower and you have it. Thus you can have a longer runtime on the external pack while keeping your internal battery full.
I only had to drop it by 0.1 Volt below charging-voltage to archieve this.
Second good thing is that the I is getting lower too so there is less heat in the converter and external battery which gives an even longer running time.
......May I answer...this....first thing..
Well maybe I want to simply have more energy on the go....even tho if he only made it for his Laptop you know..coulda just bought another battery...
You can also plug your power bank when your battery is full, this way you'll consume only what the laptop needs, and when your power bank is flat, you still have your full laptop battery.
Good idea finding the below charging voltage. I'll have to look into that. Surprised I've not seen someone hack a pack into a huge portable docking station size battery pack. That would be something different.
@@jafinch78 Back when I was a poor college student I had an old siemens laptop that ran perfectly happily directly off of a 7Ah lead acid battery lol. Didn't charge but I didn't want it to, so worked out pretty perfect. I used to get some odd looks though haha
@@SuprSi You're motivating me to look for either a T42 or X200 docking station and try what I mentioned above out to make a docking station battery pack. Might even be able to 3D print also... I'm not sure about thermal issues though. The pricing isn't too bad building the hypothetical pack out of protected TP4056's, or maybe even I see cheap 2S modules cost effective, ganged together. I'll have to read into hacking into the existing battery packs protection circuit and plug specifications and see if I can find and old not working pack for connector with pins.
My gaming laptop is power hungry and the integrated battery also doesn't last long so i'll make a power bank using your method. Thanks so much!
I think its important to note the output of the buck and boost converters are not temperature stable so you could potentially damage something under extreme temperature
I have the exact same laptop and had it since around 2016. my second psu is shot and now i wanted to build my own psu. damn cheap laptop psu are sold way too expensive and get hot af. thanks so much for this video!!!
Glückwunsch zu 1 Million Subs. Mach weiter so :)
I love how creative you are with everything electronic. each of your videos have something unique of you which is you write down important aspects and that always stands out to me. you make everything seem so easy fun and even entertaining I really enjoy that from you please continue to do that. you are amazing at what you do.
It's interesting how many german YTer make national content :]
Joerg?
@@TrollFaceTheMan Jorge?
@@TRMrStone, Jörg Sprave from the slingshot channel is what I meant.
@@TrollFaceTheMan Hm, don't know who he is 🤔 :[
@@TRMrStone, German that does primarily English content. He runs "the slighshot channel."
Go on there and he'll "Show you it's features..."
You make stuff better quality than some factories
Sir you are an inspiration ❤️❤️❤️
I like the industrial look of the battery pack
Hey, shouldn't have you created the teleportation technology already? Beam me up, Scotty!
My xbox one power supply just took a dump. watching your video i learned some concepts i can use to fix my dying xbox power brick. Thanks!
Is it possible to use a nitro engine as a power supply? Btw, congratulations on one million subs :3
You could...tad expensive though. JohnnyQ90 does that to nearly everything. :)
ruclips.net/user/johnnyq90videos
Seems easy to charge your laptop with the correct voltage. I have a Dell and the Charger needs a third line to communicate with the laptop. It supplies information about the wattage so the Dell can work with that. Otherwise it will refuse to charge for safety reasons. Using a 4S2P Pack with NCR1860B and a simple car charger. Only problem is, that I have to charge it with my RC battery charger.
I’d like to see a DIY or Buy version of this :)
If your laptop has USB-C you just need a commercial powerbank with USB-C Power Delivery (PD) support and enough output voltage (usually 12 or 15 volts). Keep in mind that still some laptops don't support charging over USB-C.
so cool. i'm glad my msi laptop (7rex) lasts almost 4 hours of just browsing the internet. one of these packs would be good for gaming on the go as it drains pretty quickly if not plugged in
Great project !
Congrats Great Scott for 1 M subscriber
That benchmark is kinda flawed, you need to have GPU and CPU at full usage in order to get real numbers, I would have used Cinebench and FurMark
Exactly. You also need to have the HDD spinning, the display on full brightness, CD/DVD/BR spinning and the internal battery being charged.
+ play song with full volume, set display brightness to maximum, shorted out the usb port with resistor (draw a current to maximum), copying proses to make sure hdd is spinning in maximum rpm, burn a disc cd/dvd with maximum speed. anyone else?
Congratulations on 1 mil!
so.. whats the cost of all of this?
this project poped into my head a couple of days ago, you made it quite hard for me to match your method, though , given me a drive to try it my way,thanks,
In the future could you make a video about how to make a battery backup for an ATX power supply on a desktop computer?
Just add an AC inverter on the output of the battery. But it would waste less power converting from AC to DC, if you just added the modual power supply connectors on the battery bank itself.
That BMS doesnt have overcurrent protection. You can easily draw 100A and melt it before protection kicks in
Great Project..!
Can you please make a DIY BMS ?
Oh yea
That would bei awesome! With current limit function for charging and discharging too.
I seem to recall seeing a video where he tried that, but in the end he concluded that the Chinese can still do it cheaper and the only reason for making your own is if you either want to charge an odd number of cells or to charge them at a much higher charge rate than supported by the Chinese BMS circuits.
Congratulations! You've reached one of the best achievements on YT. Best of luck. Stay safe and have fun!
i just bought a second battery to switch, when my first on is depleted.
its more energy efficient to wire the cells in parallel with the laptops battery
it takes about 5 minutes to connect the 2 together and only requires 4 wires for a 3S battery, you wont be losing that 30% efficiency
When you connect two battery packs together of different capacity the lower one will become a parasite as it discharges first and starts taking power from the larger cell. Efficiency can become worse.
@@lonjeloco in my experience, the capacities stack quite well as long as you are not connecting a 500mah cell with a 5AH cell
If you are that worried about it, just make sure the cells you are connecting in parallel are of similar capacity to the cells in the original battery
One of the benefits of wiring everything into the internal battery is that you can see the power level of everything on the windows battery meter (after you run it through a few charge cycles to calibrate it)
MWB Gaming Mixing old and new cells is the problem. That and it will take forever to charge as it was not designed to charge that many cells. The biggest issue is where to put the cells. Such a mod would make a machine less portable so it's stuck at a desk were it might as well been plugged in. Most laptops don't even use 18650 cells anymore. Hell buying a second battery is not even option anymore.
@@lonjeloco I did this mod with my Thinkpad T420s and now I get 12hrs of actual usage (about 6hrs on the battery eater classic test with the brightness all the way up)
It weighs about 4KG and is twice as thick, but who gives a rats ass if it is twice as thick and twice as heavy, if it now gives upward of 6x the runtime
I can still fit it into a backpack and carry it around all day without issue
I have a 200wh+ main battery and a modified ultrabay battery with another 100wh and enough space for a gutted SSD (effectively using the SATA port and battery add-on at the same time)
You can easily do this mod to any laptop with a non removable battery by drilling a small hole in the bottom panel for a plug or to run the wires through
As for the charge time, what do you expect, it takes ages to charge, but it also takes ages to discharge
A bigger fuel tank takes longer to fill with the same pump, the same logic applies to batteries
The charging circuit limits the current to a safe level and will cut out if the charging system overheats
Add a USB socket so you can also change a mobile phone.
Many (newer) notebooks can also do this job.
Richard Creese That would require a different buck converter with his module bundling approach.
Love this guy.... he just gets it done!!!
I'm lost... but love watching!!
One small question how much does the power bank weight??
1.5 KG
Thats's a serious series Li Ion Power bank. Well done for preparing the video, this must have taken a serious amount of effort and time.
Why not buy a cheap battery and just 3d print a new case and make a 3s many parallel pack?
Lol its diy not what you need to buy
Why would he go buying more batteries when he already had a suitable spare one?
It lacks the cricuitry wich communicates with the laptop and that charges and balances the cells. You will neve be able to "make" a battery. And add that to the fact that many newer gaming laptops and even normal consumer laptops won't have removable batteries anymore, it makes your option impossible in every way
@@eduardoavila646 i still dont understand why removable batteries have disappeared
i see no benefit in turning the device into an expensive paperweight when the battery dies (vs bringing a few spares with you and swapping them out as needed)
@@mwbgaming28 Well, in the user side:
1- Thinner devices
2- Water resistant devices
(Both are absolute bullshit to me) a galaxy s5 for example breaks this water resistant mith.
Thinner devices are a stupid idea, what does worth have a paper thin device that is only a bad paperweight?
In the company side:
1- Hard repair, users cant thinker with the device to make it better or repair it, so it makes higher sales.
2- Devices last less, only last now the battery life, before you would replace it. So no need to sell and manufacture so much spare parts.
3- Cheaper to manufacture devices, without having to put a dedicated battery slot/place, and a battery shape wont need to be standard.
4- They sell way more powerbanks and acessories.
So yeah, it's pretty much a advantage to the companies, not to the consumers.
I have done it in a very similar way.
For the DC/DC converter i use LTC3780. They are smaller, with high efficency and they are buckboost. So you can use 18 V battery packs.
As battery packs i use power tool batteries, separated by Schottky diodes. So i can hotswap them.
Can you make a pure sine wave inverter using 4017ic and ne555 ic
I can put it on my to do list
@@greatscottlab That would be awesome!
@@greatscottlab thanks scott iam your big fan
@@AmitabhAnkur yes
Please put a heart to my comment
Congrats on the Million subscribers! This pack is a good idea for off the grid apps and for less noise emission. Can even connect with the solar panels (or other system) if specs match up. I wonder like Elvin Haak noted... if trimming the pack buck converter 0.1V below the charging voltage will work better and the laptop will still use automatically when the internal battery is too low.
9:44 Wait... What?
What do you mean?
Congratulations for 1 million
Hello sir 👋 congratulations for 1m subscribers and what about drone videos do it fast
Wonderful video. My 8-core laptop, (1 hour battery) loves you. The laptop I'm viewing this on also has a slider that will pop out the battery. I carry an 3 extra batteries around in my backpack. Which is what I would do with any laptop using an easy battery release. On the other hand, for the 8-core laptop you have to open the back and disconnect wires to replace the battery. Your video will come in handy. Thank you. Nowadays; at least in the Washington, D.C. area. All the malls, coffee shops, co-working spaces, most of the casual (indoor) dining spots, ... have wall sockets. So that you can plug in /recharge your devices. Now if they would only do that on buses and the Metro.
1million subs please make a German vid
Maybe some time this year......who knows....
@@greatscottlab It'll be cool! If you do that, please add an English subtitle too
@@greatscottlabneeed drone
I don’t even know what your doing but I can’t stop watching!
I'm a little Early cool powerbavk
Really cool powerbavk
@@Дмитри-ч8ш yeah really cool powebank
Yours videos as Always.. are awesome! clear english helps to understand almost everything, combined with very explained Project! Best eletronic channel on youtube!
Avira is not that good
But it is German.
Wow.This would charge my laptop ~3.8 times with an estimated efficiency of 80%.This gives me 7 hours of run time.I have a HP EliteBook laptop.It already has a nice run time on 33.3wh.
the word tell me this is ridiculous project but i think it't necessary ,geat job mr scott
Congrats on 1 mil
Here's the fun part - most swichmode power supplies (such as those used on laptops) will accept DC just fine, so long as its > output voltage, so you might have been able to simply hook up your battery directly to the AC input pins of the laptops stock power supply.
Some will require the input voltage to be at least 30, 50, 60v or so but others wont. The main thing to keep in mind is that the rectification inside the power supply will likely be undersized for a lower input voltage at its max output power (ie 19v, 6A here) so for lower voltage batteries may eventually overheat/damage the power supply if used at high power a lot.
Buck converters can easily fail short. I have one of those exact buck converters but the current limit function didn't really work well and I don't trust the thing much. I would add a crowbar circuit to the output as a safety feature to prevent blowing up your laptop with 40V in case the buck converter fails (which can happen by either the MOSFET failing short, or the feedback pin gets shorted to 0V or otherwise breaks.)
Also it would have been cool if your projects were custom schematics and you used your JLCpcb sponsor as part of the build to make custom boards for your projects! You could integrate all those discrete boards onto a single
Congratulations,(on a million) you are the best youtuber.
Being using this method thru RC Hobby lipo to power my laptop 6 years ago until today due to internal batteries already dead. The only main issue is the buck converter generate quite some heat, my finger can't barely touch the heatsink of the converter after running it for 30 minute, and yet, the buck converter still works fine even it is hot.
Your circuit analysis skills are very impressive!
Congrats on the 1,000,000 subs. You worked hard to get them. Thanks for all your excellent work.
I tried to do something similar before, but I choosed a Boost converter that, even If it could handle 150W and my laptop requires 120W, it heated to much and then it shutdown.
Great video, maybe I'll do something similar
Congrats to 1 million subscribers
Congrats on 1M! Now, to have into account next time you try to disassemble your laptop: check into a way to remove the keyboard if it has screws, normally they have hidden screws hidden behind it, that's the common way they assemble laptops
For my part, I simply use a dewalt battery (20V MAX XR 5.0Ah Lithium Ion 100Wh) and a modified adapter (20V USB Power Source) which I added an XT-60 connector which I can connect the dc jack adapter for laptop.
My HP laptop takes 19.5V input and the dewalt 5S baterry is around 20V fully charged so I don't use a regulator.
Almost every laptop from decent manufacturer these days has battery capacity of 7+ hours of non-stop usage, with some Apple, Lenovo and Asus devices even getting 10+ hours. Great build, I’m just doubting the actual real life necessity of such powerbank. Cheers!
Congrats sir 1M subscribers. Learning electronics lessons from Great Scott . thanks sir
Your content is always inspiring and i can understand your huge efforts in creating a video. Stay blessed my bro.
Wow realy nice project, and it taked long I think to build, I was thinking how my laptop can last longer on battery, and here we are with laptop power bank, maybe I will build one!
My favorite electronic project channel on RUclips！
Very useful for old laptop battery packs I still have. Hopefully mixing them will not be too much of a problem.
Also, maybe you will consider taking screenshots of the parts list pages for archival purposes in case the item is no longer for sale. For instance once an Ebay seller stops selling an item, the page is not longer visible. (I tried to view the BMS you used from ebay but I could not find it.)
Thanks Scott.
Du bist ein toller mensch!!! Honestly you have a gift for explaining this stuff and I swear you're psychic, because I have been hoping you'd make a video JUST like this. Thank you and I wish you the best of success 💪
nice video, but in your case another battery for the laptop will be just fine. and yes, like some other people pointing out, if I have a mbp or razer blade or any other laptops that are charging through a usb-c port, this method will not work and I will not suggest trying it. anyhow, a lot to learn from this video, congrats :)
Please keep the work, you are my electronics teacher
You can also get a non-working battery pack that fits your laptop...remove all the contents...and make it a pass-through to use only 11.1VDC instead of 19VDC.
That would bypass the charging circuitry and all the losses of that conversion.
It would also make the external pack much smaller as you would need much fewer batteries.
Or you could just change the configuration on the external pack to make it last longer with more batteries in parallel.
I so hoping someone was going to do a touch up on this!!!! CONGRATULATIONS 1 MIL AND COUNTING!!🎉🎊🎉🎉🎉🎊🎊🎊🎉🎊🎉
Awesome project, I used to think to build one of these with lower voltage output, but then I realized these days I can just buy one of these power bank that support "Power Delivery" and can pass airport security check
I'm really impressed with your in depth knowledge of electronics..Your videos always inspire me to make something innovative.. 🙌 I'm a beginner and just started making some electronic projects.. Can you please make a video explaining your journey and things to do to have a ocean of knowledge like you😅😄
great video i want to build one like this myself i have a ton of 18650's at the house from old power banks , i would add some usb 2.0 ports that can output 2.1 amps tho
FYI, it's cheaper to buy two separate laptop batteries that can be swapped and you can carry one extra instead of two which is easier on the weight, only down side is you need to plug the laptop to charger before you hot swap them, or if you don't have charger or outlet available it has to be shut down temporarily. Another down side is you don't know what type of cells you get from the non genuine cheapo laptop batteries or how long it will last since they have temperature protection fuses inside that can be set off by the laptop overheating, not necessarily by the batteries overheating themselves. Also if you go with this build there is efficiency loss with these boost and buck converters so it's about 30-10% energy loss.
great scott is back