Must LITHIUM BATTERIES be BALANCE CHARGED ? #15
HTML-код
- Опубликовано: 5 авг 2024
- Music Partners
/ chillhopdotcom
********************************************************************************
Here’s a list of all the gear I use to shoot my vlog.
Panasonic Lumix GH4 - j35.us/amazon-panasonic-gh4
Panasonic 7-14mm f4.0 Lens - j35.us/amazon-panasonic-7-14
Voigtlander 10.5mm f.95 Lens - j35.us/amazon-voigtlander-10-5mm
Lexar 64GB 1000x SD Cards - j35.us/amazon-lexar-sdcard-64g...
Rode Microphones - j35.us/amazon-rode-videomic-pro
Joby Gorillapod - j35.us/amazon-joby-gorillapod
GoPro4 Silver - j35.us/amazon-gopro-h4-silver
SJCam400 - j35.us/amazon-sjcam-sj4000
Zoom EXH-6 - j35.us/Zoom-EXH-6
VidiU Pro - j35.us/amazon-teradek-vidiupro
Gear I’m considering purchasing:
j35.us/DJI-Phanthom4
j35.us/Amazon-DJI-Osmo-4K-hand...
j35.us/amazon-sony-rx100m3
j35.us/amazon-sony-a7sii
j35.us/Amazon-Parrot-Drone
j35.us/Samsung-S7Edge
j35.us/Olympus-7-14-28
********************************************************************************
Follow me on Instagram j35.us/insta-jag35
Follow me on Beme j35.us/beme-jag35
Follow me on Twitter j35.us/twitter-jag35
Follow me on Facebook j35.us/Facebook-JehuGarcia
********************************************************************************
If you would like support our project and help me make videos,
you can donate: j35.us/helpwithcash
or you can become our patron / jehu
********************************************************************************
Also please support our sponsors
j35.us/jag35-2016
gabvwkey.com
j35.us/indiespot-2016
evwest.com
www.isee360.com
www.rode.com/products
******************************************************************************** 
Хобби
Some years ago I installed an extra 4 kWh battery pack in my 2008 Toyota Prius, it consisted of two packs 24V of 6 LiFePO battery banks in series. The 48V was then converted into 200V and set parallel to the existing battery. After a couple of months the capacity dropped rapidly and the BMP kept moving charge from one cell to another. I decided to take the BMS completely out of the system and within two weeks the cells fully recovered and I got the full capacity back. The problem with a BMS is that it looks at voltage only, not charge.
Nice explanation, thanks for the video!
Clicked play, was interested, and a couple seconds later it had been 13 minutes.
Good video
atheist?
hentai nat Yep Yep
Bro, nice to meet you.
@ Michael Ramey, Exactly the same here.
Random question. LOL!!!
Been in electronics a looong time Best explanation I have heard. We are never too clever, or too old to learn.
Yay! Less cost of charging and alot less thinking involved in this aspect now. Very clear, thank you
Haha I love how the video end with your high hopes for the drone to help storytelling and it crashes at first launch. I almost picked myself. Keep up the good work sir you are not only brilliant but entertaining at the same time
Jehu, I love your style my friend and appreciate all that you do and teach. Great thing, please keep it up!
Entertained and highly informed.
I enjoy your relaxed, friendly and authoritative style. Makes me feel comfortable heeding what you say and confident to act upon your advice...
Thank you.
This video is awesome. Thank you for the time and knowledge you put in to this!
Goddamn crystal clear explanation, better than my university professor !!!
EXCELLENT presentation, keep these good vids coming, very informative!
Nicely explained and clearly stated. When most of us recycle all kinds of 18650 cells from old laptop batteries I'd bet most of us worry about charging and discharging them out of recommended voltage ranges. I just use two B6 chargers to manage the individual parallel banks so they are balanced. Since the cells vary wildly I never get them perfectly balanced but as you said, when they discharge at a rate of 2 amps each it doesn't matter.
This is so cool. Great explanation using interesting but relevant side notes and visual
That was very informative, I'm glad u explained it like that. Thanks William. Great Video
What a helpful video, thanks so much Jehu!! You're single-handedly making the DIY battery world a safer place (:
This is probably the most informational video I have seen yet on conceptualizing a battery pack for my electric vehicle. Thank you for clarifying many things. My vehicle is powered by two 500 watt, 48V hub motors. The current battery pack consists of 4 Sealed Lead Acid 12 volt batteries. Very heavy and doesn't deliver the range I need. My desire is to build a Life Po battery pack of 14s7p to provide me with 550-720 watt/hours of use. with 98 cells, I was confused about balancing vs. monitoring. Your explanation of power drain was very helpful. Since there is doubt in my mind about many of the Balancers ability to actually balance cells, I think I will stick with not having a BMS. It make further sense as I will not be requiring more than 20 amps of power at any time (most likely 10 amps steady), so the drain should be low compared to the capacity (below 2C if I am correct). Thanks again.
Great video as always Jesus, thanks for sharing your knowledge and experience
Great explanation. Most people that complain and criticize never actually do what they are criticizing about. On the other hand, you are speaking from experience! Keep up the great videos!
jimginnyohio,
Thank you
@@bukolaayeni78 hello Baba, are you in the country? Can you join in a Powerwall project?
@@Cooldipo where is this going on? Interested
jimginnyohio, you explained beautifully, I own and operate a restaurant and thank God that I get very few comments coming from those kind.
Thank you JehuGarcia; this was a very helpful topic and you did an excellent job of explaining it. Btw; I like your T-shirt JAG35; nice graphics. Is it your creation?
No shenanigans just excellent information. I like your style, you are very smart. Awesome electric bus you got there too. Thanks
Thanks for the practical demonstration. It helped me to understand it better.
I finally got your point, Jehu. so it's not so much about perfectly matching cells, it's about designing the whole pack big enough that your discharge rate per cell stays below the discharge rate of the worst performing cell.
Now, how do you track that discharge rate cells, by the way ? do you write down how long it takes to discharge from 4.1V to 3.2V ?
I guess i can do this with the BTC3100 which tracks mAh and time elapsed during discharge (processing 4 cells separately at 1A "in parallel"). waddyathink ?
Thanks amigo.
Keep on trucking ! (from France)
Great demo. Really shows the difference what a high load can do to a battery.
Love your channel man. You’re a good teacher. 🤙
The absolute hands alltheway down college level clarity. U Rock !
Awesome knowledge man! Love techy nerdy stuff
Another great video! Thanks for sharing.
Would you mind showing how you figure out what the weakest cell in a group is? Also, in a large pack (or maybe a small one?), is there a standard C rating per cell that you try to stay below during max charge/discharge current to ensure that all cells in the pack will charge evenly?
Unrelated, but I'd love to see a follow-up to your bottom-balancing video - one where you demonstrate the process and how it's done. :)
I didn't need the long-drawn-out and simplified explanation of why some batteries may need balancing while others do not... but you did such a magnificent job at it that I just continued listening for fun lol 😅👍
Dang Jehu I just may have learned something and that is amazing . Thanks mon
Excellent video, that's why you're "THE BOSS"
This video is so incredibly smooth. Damn.
great video man, there was an article in march version of home power magazine that covered this very nicely, they took 48 cells all manufactured from the same place and on the same day, they then split them into 2 groups, they made packs of 4 cells. on 6 of the packs they installed a very commonly used universal battery balancer on them. then they left the other 6 un-balanced as a pack, then they ran them under loads using the same load over and over to simulate usage on the cells to use up the cycle life of the cells tell the capacity of the cells starts to drop. in the testing they found out that the cells that were hooked up to a battery balancer during its charge cycle reached its 1/2 cell capacity limit 37% faster than the cells left unbalanced, the theory behind this is that when the balancer is balancing the cells its applying a micro load the cell that needs balanced in the pack and when it does this the pack voltage drops and the charger sees this drop in voltage and starts charging the pack over and over tell the cell is considered balanced, these micro loads and charge cycles during the balancing phase takes micro portions off the cell cycle life over time, resulting in that cell wearing out quicker... the only benefit of balancing the pack is to get slightly longer pack life out of a single charge when in use... the more cells you have in a pack that spreads the amp draw reduces your need for balancing, because the cells will stay closer in voltage as the cell capacity increases on the same load over time..
Thats really interesting. Do you have a link to this article? I think for my off grid batter bank I will be going down the route of LiPo, Hobbyking has some great deals right now on some packs and I can build a 1.5kwh 48v ish pack for very cheap. My concern was balancing but I think I will go down the route of a Meanwell variable 1.5kw supply that I can vary by a microcontroller. This will monitor cell / pack voltage and give me complete control.
I have balance chargers already so no problem doing a balance charge every 10 cycles perhaps?
William link would be a plus and thank you
A link to this would be great
I appreciate the time you put in writing this . It really helps me , you are the best 💪🏽🎰
♥ thx buddy, you're videos are really great
This was a helpful item you pointed out, it'll be useful to know the discharge rate of the lowest denominator battery in order to get an EV to run for longer. In student FSAE there is an endurance test which will benefit from this 🙂
Great demonstration. Love your channel.
Another great tutorial ...and a good looking tele on that back wall that I can see.....
Thank you, that is really informative. Absolutely it's down to application. I'm off grid running solar. I'm over sizing my bank which basically means I don't need to worry about balance and also maximize cycle life as the bank will be charged to no more than 80% and discharge to 25-30% of capacity. Hopefully this might lead to the bank lasting as long as I do. If I need serious power or very long run time, I just ramp up charge voltage and accept deeper discharge cycle. Great video...
Max life = keep the battery temperature stable ...
Delta in voltage grows as well when getting fully charged or discharged at 90% (I see it on the Winston 200Ah)
Thanks man, this video was very helpful to me.
hola como esta.
queria saber cual pagina es de confianza para comprar baterías sony. si me puedes recomendar alguna
Good info right here! This is something no people usually tell you. I've been wondering do you really really have to balance charge all the cells each and everytime.
Hi Jehu, I just joined yesterday and today I opened a battery froma dead laptop and found all 8 cells are in good shape. I made a small battery bank and my led lights are working on that. Thanks for your teaching. Question:- after putting 100 used 18650 cells in a powerwall how to see ballance charging and which battery is stop working aftyer few months?
Excellent analysis, keep it up
@jehugarcia if you don't use BMS, what is your methodology again in charging without one? I use a BMS but one time the BMS got busted and my LIFEPO4s got screwed.
Thanks for this video! Now I understand better the use for a BMS :D
Good solid into - thanks!
I learned something new thank you very much.
flip crashed that drone in the first attempt is so motivating!!!!. unlessit breaks something !!!!!! keep up
Good video. I learned something. Thank you!
Thank you my friend excellent exclamation really cool video liked and subbed kind regards from the UK 🇬🇧👌🏼
hello i have a question for you i just made a battery pack with brand new samsung35E 15s6p with bms . Now in case i wanna charge it without bms can i connect the charger (60v 7 ampere) directly to the discharge cable?
thats amazing , i was just thinking about this the other day , good info thanks ..
Thank you! Keep up the gr8 work.
I love you man , this video has the best explanation on youtube . You are the best 👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼
I liked the video, I was curious though what did you use for short circuit/overloads for vehicle
I'm back, great vids. I got lost working somewhere.
Is it usually/always necessary to change the charger if you go from Nicad to 18650's if you have approximately the same voltage value. (For battery drill)
I just have a question I have build 60v battery pack 20ah with lishen cell 4000mah after 4 months start to get fully charge 66.7 in place off 67.2 are this can be need balancing or thats normal
Jehu.....GREAT video , as always ! What year and style ( high windows/vents )is your V-Dub, Samba ?
Professions are compartmentalized quite much so everything is a larger journey each time we dive in to a subject.
useful, thanks !
Keep on trucking ! (from France)
Good explanation, so I could do a powerwall using the cell log 8, or two of them to check my packs periodically?
I think I remember you saying that you dont leave them connected because they ironically unbalance the packs over time?
Very comprehensive, thanks! :)
Very good explanation, thanks!
Great video!
You say you don't balance the cells, are you using a bms and letting that balance ? Or do you have some way of monitoring you battery health ? I'm looking at making my own pack and dont want to add in more expense or difficulty.
If you have covered this already could you please post a link to the video
Thanks
I have run my DIY powerwall for years with no balancing:) they stay balanced enough and every six months or so I'll manually balance them. Cells become unbalanced when you hit their limits all the time, I daily cycle my pack about 50% so lazy cells never get the chance to shift a pack.
great example demo. best I've seen
I wanted to ask you a question:
What do you think about charging a 52v 20ah Li-ion battery of an ebike without balancing?
my BMS died a couple of days ago and I am debating whether to get a replacement BMS. I know how important it is to stop before low voltages and can do that with a precise monitoring app. I still have my old charger that I was thinking to modify so that each cell gets a maximum 4.1v instead of 4.2v.
Thank you in advance for your help
Hi i have build a 14s 6 battery 18650, can i charge my battery pack with the charger without bms? because the charger only goes to 58,8 v? Hope for anwser
Fantastic video, I'm speechless...
jeh i need 624 lipo pouch 5000mah 100c bateries do you know where i can get them
Perfect explanation man, thanks.🍻
Hi can I use 10 laptop cells in parralel 14 in series 140 in total they are half 2000mah and half 2200mah but all together so they will be 50 amps continuous 5a per cell can I use a 45 a bms with this pack it is only 5 a out will this be ok on a ebike
There may be a risk that if even just one cell in a parallel bank develops a significant self-discharge current, it could cause that bank to reach 0% much sooner than the other banks? (and once the voltage plummets, the discharge current would then rapidly reverse charge the empty bank, killing it, even if it wasn't already damaged from the
Which is why the packs ( 7S ) I am building all cut out at 29.02 Volts. 7 X 4.145 with me charging them at 29 Volts max makes for cool LiPo batteries. At rest, they come in at 28.7 Volts which is 4.1 Volts per cell. Each pack of two parallel cells has a dual BMS board on the pack.
I'm using thunder sky lifep04 3.2 60ah batteries in a 12v solar powered system for an RV. Would I need to balance these?
His RND lab is a break through because of his passion. And very valuable knowledge giving it free thanks to him.
This is a perfect video! Your explanation is clear. I have a question. Your example for uneven discharge rates was batteries wired in series. Does the same principal of discharging a cell to the weakest cell apply to cells wired in parallel? Love what your doing. I am newly subscribed. Thanks
Very good video. It's hard to find good information about this topic on the internet. It would also be nice to have an explanation about the difference between series and parallel connection in regards to charging. To my knowledge batteries connected in parallel are quite forgiving if you don't balance them, while batteries in series can be dangerous if not balanced (with high load).
Hi i have dilemma about charging 18650 in parallel. If i have ,say 40x 18650 connected in parallel xxxx mAh and i want charge it. Can i just connect charger to + and - right ? Any balance charging ?
I read some article about parallel charging and i saw this:
When charging batteries in parallel, the voltage of all batteries will be exactly the same the whole time. So, when the charger stops at 4.2V, all batteries will be exactly full.
Is this correct ?
thanks for the great video
*Great Video!!!*
Is it safe to use a 3V zener diode to protect a battery? The zener diode connected to gate of a MOSFET that controls the battery's output with a pull-down resistor of course.
I can't find a Cell Log 8 that is the same as you got there, are there others you recommend, maybe a video on some different types.
Best explanation I've heard, good video
Tesla module from model s85, do i need some extra BMS or not? If yes, what do you suggest? Thanks
I have one ? Is there a way to trickle charge my cordless drill battery’s during down time like months of not using them, I getting sick of buying battery packs because I forgot to keep them at 60 percent charge. I keep my motorcycle battery on a battery tender and it’s fine every year after sitting for the winter. Sorry to ramble on just getting frustrated with having to buy new battery’s for my cordless tools. Tools are lithium ion packs
Great video, and e need some help here....
I have a electric scooter 48v/52v 18ah battery and the BMS died, can i remove the BMS, and start to cherge the pack by the thick positive and negative wires? Without the risk of explsion..? i only have a 42volt battery charger that i use in my electric scooters, lke Ninebot and Xiaomi... thanks on advance :)
experience is what matters most. thanks !
I want to make a 18650 li-ion pack for my old motorcycle, but idk if I need to do 3 cells or 4? And does it need to be balance charged?
I still need to check the voltage output of my '71 Honda CB350, but I need to upgrade the regular & rectifier to a newer combo unit first. But I'm just curious cuz I've seen lithium batteries on the market, specifically targeted for motorcycles, and they seem to be 4 cell packs with no charge circuit or BMS or anything at all. I just don't know if it would be ok to use one with a much older and less reliable motorcycle electrical system.
On your EV do you have a system to prevent over discharge & over charge of the whole pack? Interested if you are having to manually prevent these possibilities or if you put some sort of electronic control in.
You are a living inspiration! Thank you for sharing your inventive ideas. :-)
Can I parallel 2250mah and 2200?
Btw, it's 12pcs 2250mah bat and 12pcs 2200mah...
I'm planning on making 3s4p of those 2250mah and 3s4p of 2200mah... then combine that 2packs as 1 in parallel ..or maybe 3s8p with 4pcs 2250mah and 4pcs 2200mah in parallel...
Thank you for the information.
A question. I want to power my Chauvet Slim Par 56 LED lights using 18650 Li Ion cells. The battery will be mounted on the outside bottom of the light instrument. My plan is to use 9 cells ... wiring 3 sets of three in series then connecting the 3 sets in parallel. May I ask your advice in wiring this battery and using the correct onboard (PCB) charger. Do I need to use balance wiring? I am hoping to get about 6 to 8 hours when fully charged. Thank you.....I love your videos/ Very informative.
Great work bro
But how do you protect your 18650 cells from over-charging and under-discharging.? I want to make a 20S12P (or more parallel) li-ion pack for my E-scooter and looking for te best, safe and cheapest way to do this. Any ideas for this.?
Informative, thank you!
Great explanation bro cheers for the info
Thank you for your Layman's explanation.
You are a great teacher. Thank you.
jehugarcia i need your help just to be sure about what i'm doing. I have a bunch of 18650 cells from laptops batteries, i usually charge them in parallel using a PCB based on TP4056.
I use these cells (in parallel) in little projects like simple flashlights and so which never use more than 3 amps, 3 amps is the higher discharge (turbo mode for example). Usually the discharge rate is about 1 amp or 1,5 amp.
Should I charge these is cells balanced?
Thanks.
If all of the cells are in parallel then they are essentially acting as a single cell. Assuming a pack is built correctly, you only need balancing capability based on the number of cells working in series. If you only have one cell in series then you won't need balancing, no matter how many you have in parallel.
The positive terminals are all wired together when forming a parallel group, so if some cells have a lower voltage the other batteries will then be at a higher voltage, and by definition current should flow back into the lower voltage cells from the higher voltage cells.
This is why it's important to ensure all cells are close to the same voltage when initially making a parallel group. If a cell is very low, the big difference in potential causes a fast inrush of power, possibly damaging cells the same as if you subjected it to forced charging at too many amps.
This isn't exactly how it works once the pack is together because the process is continuous at that point, so no one cell should be able to drop voltage independently. In reality what happens is the faster discharging cell would start to fall behind, and because of its reduced potential the other cells will bear the burden until the pack catches up. Likewise when charging, a cell that might otherwise fall behind will be forced to take on more electrons rather than allowing a discrepancy to form.
Parallel cells are "self-balancing" in this sense, which is why it is recommended to build large packs in parallel first and then in series. This reduces the burden on individual cells by allowing your parallel groups to self balance while your series groups may need external balancing.
But if your packs are using clips instead of hard wiring, you can always take apart the cells and rearrange everything in parallel when charging, to avoid the need for a balancer.
Just be careful because reforming them in parallel counts as making a new parallel group. If any of them are discharged too far the same situation as above applies. Lower voltage cells will be force-charged instantly by higher voltage cells, which can be dangerous.