After dismantling a few battery pack found at value village, its usually just one or 2 cells that are done. I think battery packs should have warranty on them considering companies makes it "one battery for all your tool" kind of thing. Also they should offer re-celling packs in case capacity drops too much.oh wait we live in a capitalist world nevermind haha. Thank you for the informative video
Great sleuthing! Though, I am very curious how this holds up in the long-term. A followup vid would be awesome, next time a cell fails! Great job extending the life and keeping it out of the trash.
I have one of these. It's fine but I've heard horror stories about this particular Kobalt battery. I treat it with kid's gloves, I never totally discharge or totally charge it full. I leave it sitting around 50%-70% charged when not in use and only add a charge right before I'm going to use it. Apparently, leaving these 100% charged on the shelf is not a good idea. I treat all my drill batteries the same way and never just leave them in the elements. Knock on wood...I've never lost a battery. I even have some drill batteries which are at least 8 years old which work fine. I enjoyed watching you work Vuaeco.
Great instructional video! 1) If you didn't have the 80v Kobalt available, how would you have found the correct cell? 2) What was wrong with the with the 80v Kobalt that motivated you to cannibalize it for parts? Thanks for the great vid!
You can get surplus batteries at places like BatteryHookup. Likely this guy either didn't have an 80 volt tool or the battery had another problem like a bad board.
If the battery voltages are not the same, like a few cells were a lot higher voltage this would cause power to quickly flow from them into another cell with lower voltage when connected -causing damage. The voltage does not have to be exactly the same but it should be real close.
The cell voltage is not 3.7 volts. It's only 3.7 volts when the cell is about discharged. Just like an AA battery is not 1.5 volts when it is fully charged, it's closer to 1.7 volts.
No. You have to replace them or the entire battery pack won't work. If you have a TV remote control that takes 2AA batteries, you can't just put one battery inside of it; and then expect it to work.
Nice job. They sell these batteries at outrageous prices. It's reminds me of the old ink jet printer cartridges.
Muy cierto, eran más caros los cartuchos de tinta que la impresora completa.
Ahora la batería es más cara que todo el aparato😢
And like you're saving this battery, I've been rejuvenating old printer cartridges for years with a hypodermic needle and ink that is cheap in bulk.
After dismantling a few battery pack found at value village, its usually just one or 2 cells that are done. I think battery packs should have warranty on them considering companies makes it "one battery for all your tool" kind of thing. Also they should offer re-celling packs in case capacity drops too much.oh wait we live in a capitalist world nevermind haha. Thank you for the informative video
Re-celling would make this economy collapse. They want us to throw it in the landfill and buy their new ones.
Great sleuthing!
Though, I am very curious how this holds up in the long-term. A followup vid would be awesome, next time a cell fails!
Great job extending the life and keeping it out of the trash.
Thanks for the walkthrough procedure
Thank you for your knowledge sharing to repair this battery dead.. Tnx bro now I got the idea from you 👌❤️
Great video, thanks. I have a 4.0Ah Kobalt battery that failed in the same way. What do you use to spot weld the battery terminals?
I have one of these. It's fine but I've heard horror stories about this particular Kobalt battery. I treat it with kid's gloves, I never totally discharge or totally charge it full. I leave it sitting around 50%-70% charged when not in use and only add a charge right before I'm going to use it. Apparently, leaving these 100% charged on the shelf is not a good idea. I treat all my drill batteries the same way and never just leave them in the elements. Knock on wood...I've never lost a battery. I even have some drill batteries which are at least 8 years old which work fine. I enjoyed watching you work Vuaeco.
Very informative Thank you for making this video.
Awesome job ! Thank you.
Is it possible to convert the cordless to corded instead of using the battery?
Cám ơn bạn nhiều
Great instructional video! 1) If you didn't have the 80v Kobalt available, how would you have found the correct cell? 2) What was wrong with the with the 80v Kobalt that motivated you to cannibalize it for parts? Thanks for the great vid!
You can get surplus batteries at places like BatteryHookup. Likely this guy either didn't have an 80 volt tool or the battery had another problem like a bad board.
how do I find the the discharge rate of a battery?
3.7 is nominal, fully charged it's 42v
Why do the barrery voltages have to be the same before charging?
If the battery voltages are not the same, like a few cells were a lot higher voltage this would cause power to quickly flow from them into another cell with lower voltage when connected -causing damage. The voltage does not have to be exactly the same but it should be real close.
Hi I got shortage problem and I guess fuse is burned where can find Dane buttery fuse any idea please
Is it a 40A fuse? You can just get any 40A fuse (or similar ratings to the one that is burned) and solder it right in there if it fits.
How is this battery 40V??? Even if you assume each cell is 3.7V then two parallel sets of 10 series connected cells give you 37V
The cell voltage is not 3.7 volts. It's only 3.7 volts when the cell is about discharged. Just like an AA battery is not 1.5 volts when it is fully charged, it's closer to 1.7 volts.
@@williammchugh4361 thank you for clarification
Done this before and it died again, likely more dead cells lol
Can't you just remove the 2 dead batteries.
No. You have to replace them or the entire battery pack won't work. If you have a TV remote control that takes 2AA batteries, you can't just put one battery inside of it; and then expect it to work.
Great video, thanks. I have a 4.0Ah Kobalt battery that failed in the same way. What do you use to spot weld the battery terminals?