How to Replace/Upgrade the Battery in your iRobot Roomba - 905
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- Опубликовано: 24 июл 2024
- My moms iRobot Roomba 775 has become a little to happy for the charger. It would run 5-15 minutes and go charge for hours,,, take a wild guess just WHO's job this apparently is to fix that,, You guessed it,, yours truly!
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/ myplayhouse
Even just 1$ a month, comes out to the same as Binge-watching like 400+ of me Videos every month.
My PlayHouse is a channel where i will show, what i am working on. I have this house, it is 168 Square Meters / 1808.3ft² and it is full, of half-finished projects.
I love working with heating, insulation, Servers, computers, Datacenter, green power, alternative energy, solar, wind and more. It all costs, but I'm trying to get the most out of my money, and my time. 
Наука
Very good video. I disassembled the battery and all 4-cel were showing 4.0V+. Seems the problem is the BMS itself. Do you have any tips for raising the BMS back? Thank you.
Or they just does not hold a charge anymore,, like if you put a tiny load on a cell it will drop way to much.
Hi,
Do you perhaps know, for the NiMH battery (displayed @ 02:12 ), at what voltage the battery is considered (by the vaccuming unit) "empty" & at what voltage fully charged ? 🤔
Thanks ! 😏🖒
Best Regards,
I am afraid not,, the NiMH I was messing with was in lis last leg.
Isn't this going to cause a problem with the upgraded battery? You are charging Li-ion with a charger that is designed to trickle charge and not give CC and CV
The electric in the battery knows, what to do,, this is built just for this.
Australia eBay - AUD $26 Lithium Polymer battery - 6400 mA. You must keep the filters and sensors clean to prevent stress on the moving components. The brushes and bearings for them have to kept clear and dirt bins have to be kept clear always. Also there is a sensor under the long brushes for flicked up dirt for the spot cleaning and an infra red sensor under the black and white front swivel wheel to trigger reverse etc. which gets fluff in it, easy to lever the wheel and casing off and clean that. The trouble with ALL brilliant things is you stop maintaining them cause they're so good, then they really crack up. The guys who made these also made military and space exploration vehicles, explains why they are so good.
Hi Phil
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
after replacing the niMH to Lithium ion, can i use the existing charger?
Yes the packs uses the same charger.
So , replaced nihm to Lion battery, about charging. It blinks as charging and after like 20-40 min, idk maybe it fully charged, but I heard Error 5, Is it safe to use factory charger? As I checked output label is 21v and battery 14.4. Also same error 5 goes as using laptop 15.2v charger via DC port. LiIOn even says that has built in overchage protection, just want be safe sure. How do you charge it?
I did not do anything, that was not in the video.
@@MyPlayHouse Its Turns out that Charging Dock one of capacitor was bad. Have replaced and battery is is solid green upon completion charging and no errors. Btw does roomba clean button suppose to work while charging dock? It working only when not charging.
Oh, and instead of welding the terminals, you could also just use small 4mm disk-shapd neodymium magnets. They are really helpful to have.
Hi Seegal Galguntijak
Thank You very much! good suggestion!
Thank you for watching! :-)
I have a old robot vacuum with a nickel cadmium battery and it is dead and would cost $150 AUD to replace. I love vacuums and I like this video. Great job. Any advice on a cheap solution for nickel cadmium battery cells?
Hi MOWER FACTS
Thank You very much! nah NI-CA is a dead battery technology,, try at see if there is not a Li-ion replacement for your vacuum. - glad you liked the video :-)
Thank you for watching! :-)
I was told I cannot put a lithium ion battery in because of the inbuilt charging system (it is 15 years old)
after the fusion of the original battery pack, thank goodness I was at home because I heard the first burnt smell then I saw the smoke, I decided to switch to the lithium so at least I also spilled the fire (joke) I bought on amazon the bacco compatible to the not original lithium, my Roomba goes much better than I can repeat the cycle several times, before I could not. this is my experience, if I had not intervened promptly to extract the battery pack with a screwdriver it would have melted inside or worse if I was not at home maybe now I would be in another!
Ciao
Hi Pietro
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
How is this battery holding up for your Mom? I am looking to purchase this same one on amazon and some reviews claim it only lasting a few months from a defective PCB
The battery is fine,, but her robot has stopped,, sucking,, everything seam's fine,, but no sucking,, no good :-/
@@MyPlayHouse thanks for the quick reply.. and by the way there is a built in test mode incase you're not familiar with it to help diagnose the no suction problem .. hope it helps www.robotreviews.com/chat/viewtopic.php?t=14695
Hi. NiMH roomba firmwares are not prepared to charge properly Lithium batteries. Not only charge control parameters and end of charge conditions are different, the problem is roomba NiMH load program applies a trickle charge at the end of the normal charge to prevent the autodisccharge of NiMH batteries. This overload not only is not necessary for Lithium, even damage, reducing the authonomy and life. The result is, while a Lithium battery life must be 4 years minimum, will be reduced to 6 months (my own case) to one year. A lot of reviews of this can be read in Amazon, seems is due a bad quality batteries, but for the NiNH Roombas, due to are not prepared to manage Lithium. Vendors don't know or concern about, when the user will discover the problem, warranty will expired.
Regards.
The robot was plenty of power,, but has stop sucking,, all seams to be working but it is not sucking :-/
May be a vacuum rotation blocked by debris, or no electric power. In 600 series positive and negative contacrs for vacuum are two little metalic plates in bin. New 600 models fron 2017 detect bad bin contact and generate an error 14. But 600 old models no detect, simply roomba works with no suction. May be 700 the same case
1.2V fully charged to be 1.4V, discharge 0.9V. How you welding, just a car battery? thx
Hi Joe Cox
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
how is the battery doing after 2 years?
Battery is fine,, but the Roomba stopped sucking,, it just does not pick up anything anymore.. so it is being replaced.
Some people apparently are concerned with a Lithium fire caused by the cheap pack. If you're really paranoid about the new pack having a bad charge controller, you could just tear out the old charge controller from the bad battery and swap it into the new one. Then you know for sure you have new cells with a reliable authentic roomba charge controller. Probably as close to oem as you could get but oem probably has better quality cells as well I'd assume.
I do not know,,, chances of making it even worth is also there when you change it out.
In Dyson batteries, replacing the cells doesn't work which implies the issue is planned obsolescence by software, or circuitry failure. I wouldn’t put it past iRobot
I have a Roomba 760 and the NI-MH battery pack has no circuit board or any chips inside. It only has a thermal fuse and a thermistor. I am no battery expert but I suspect that BMS is either 1: not required because the cells are all in series (12s) thus no balancing of pairs are needed (there are no pairs in parallel) or 2: very simple and done by a board inside the Roomba.
As some other comments have suggested, charger output cycle for NI-MH batteries is not great for Lithium batteries. NI-MH chargers wallop the battery with 21v - 22v until the cells come up close to being fully charged and then finish the cycle with a trickle of lower voltage that never shuts off.
Again I am no battery expert but it seems like charging knock-off batteries with the wrong charger may be asking for trouble, like a fire. I'd rather just buy a $25 NI-MH battery every 3 years.
Nimh batteries are much safer than lithium ion and have usually have no balance charging because they don't explode like lithium ion when overcharged. Lithium ion indeed has very specific charging characteristics and will require the appropriate board for balance charging as well. I looked into replacing the cells in my older lithium roomba packs but have heard they have a "self destruct" feature where the fuse will keep blowing if any of the cells read 0v, which could cause a fire if other cells are getting over charged. Maybe I'll make a video about connecting the old battery in parallel with another set of batteries while I remove and tackweld new cells on.
Just a little joke you are so good and spend a lot of time with servers and you don't have time for vacuuming Me too
Hi top gamer dansk
Thank You very much! I do not mind vacuuming,, but it's way more fun to play with the robot that does the job.
Thank you for watching! :-)
and you should be using Amazon.de if you live in Denmark you the shipping is free if you go above $30 to danmark
Better to use magnets to connect wires.
Hi @maciejmotylinsky
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
There's always a possibility that only 1 or 2 cells are bad in the old battery. Nevertheless You already bought a replacement :)
Hi SzymekCRX
Thank You very much! Yes I do not have any replacement cells,, 3000mah and they are hard to find and way to expensive,,, this is now 6400mAh twices as good,, or so it claims.
Thank you for watching! :-)
Yeah I was the goto son for all of Mums repair jobs, knew what it was like when Mum was alive. Morten did you haveto change the charge profile for Li-ion battery?
Hi Peter195267
Thank You very much! Yes You are better off finding a solution, where mom want call you again, right away, even if it is a bit more expensive,, and it is not as if she want find something else for you to do. I did not change anything with the charging.
Thank you for watching! :-)
@@MyPlayHouse Hi Morten,
Hope you will keep us upto date with your Mums battery change. Will be interesting too see how they preform without any charger mods.
Hi Peter195267
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
I once ordered a new Roomba battery pack for a friend, the same thing - it was about 20 bucks on ebay. Not really worth fixing, I'd say.
Hi Seegal Galguntijak
Thank You very much! maybe if I had some good 3000mAh cells,, but putting the old bad cells I have,, is just a waste of time,, and my mom, has my number :-)
Thank you for watching! :-)
@@MyPlayHouse Well, that buddy of mine just got the same battery back that he had in his machine, so 14.4V NiMH at 3000mAh, and he was good with it, it still runs today (although this was last year, I mean, more than a year ago). It doesn't always need an upgrade, especially since LiIon-batteries can die quickly when treated badly (i.e. not balanced correctly or so).
Li-ion lasts a lot longer and can be discharged all the way to zero,, and still be relieved to work well again.
@@MyPlayHouse But it mustn't be overcharged. Let's hope this never happens, because the designated voltage of the replacement battery is higher than the original.
I guess that new battery has a built in bms to keep the cells happy, so it may outlive the iRobot lol, guess who will fix it... yep lol.
I hope so, because there can't be one in the robot, as there's only a single connection to the battery pack.
I didn't know you could just switch out NiMH and Li-ion. I hope so for Morten ortherwise mom will be on the phone sooner than expected when it's quietly smoking in the corner of the living room :p
Hi zx8401ztv
Thank You very much! glad you liked the video :-)
Thank you for watching! :-)
A integrated PCB with patented technology for Li-ion battery can prevent from overcharge,overcurrent,overdischarge and overheat.
They claim.
lol
yes those Ni-CAD do suck
I do not disagree.
@@MyPlayHouse how’s the lithium battery working for your mum the last 3 years ?
Two battery-types, two charging-profiles...
Hi hammershigh
Thank You very much! A integrated PCB with patented technology for Li-ion battery can prevent from overcharge,overcurrent,overdischarge and overheat.
is what the battery claims
Thank you for watching! :-)
@@MyPlayHouse This is correct for extreme situations. But not for every day usage with. charging/discharging. The Li-ion charging profile should (as you know) be dominated by constant current charging after a period of constant voltage.
Super🔶🔷
Hi SKY NET CYBER SYSTEM 2
Thank You very much!
Thank you for watching! :-)
first :D?
I am on my phone,,, sorry!
But jxsl13 is awesome FIRST !
Hope the house doesn't burn down, because charging a litho wrong is a killer! The charger, charges in stages and you don't want to charge over 90% and drain below 70%. But charging wrong could cause overheating and fire! An uncontrollable fire so be careful with litho!
Sorry "you don't want to charge over 90% and drain below 70%." that is just flat out wrong.
@@MyPlayHouse that's exactly what a charge controller does! I don't care After dozens of builds I know what's going to happen like it or not! Good luck.
@@sedigives The battery should have its own charge controller, overcharge and overheating protection. It needs to be dismantled
If you're concerned with a Lithium fire caused by the pack, just tear out the old charge controller and replace it in the new one. Then you know for sure you have new cells with a proven charge controller.
That is for hekimoğlu say #büyükrisk
HI Kaan efe Turan
My channel is English, and to make sure as many as possible, can also enjoy the comments, they are also English.
Please keep to English.
Thank you for watching! :-)