Quote:
Originally Posted by Topspinmo
Here some fact.
I have lithium powered tools and I check them with multimeter. Example my 56V batteries shut off at 41V and require recharge. These batteries have computer control module’s. Not like the double A batteries. I’m not negative, lithium cells can be replaced in battery pack and regain full capabilities. But, who has the availability. I replace several 3.7V lithium in battery controlled pack. So not my opinion but facts.
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Replacing individual cells in a pack isn't always a good idea. While it may not be noticed in a very low current small device replacing individual higher powered cells within a pack can be problematic and even dangerous due to different voltages and wear between the original cells and the 1 replacement cell in the pack. All the cells should be replaced with matched cells then balanced when it is a high current product within the pack. Small multi-cell battery repair is one thing, but replacing individual cells in a large capacity (amps) pack really isn't a good idea. Some "smart" chargers and batteries won't even work after doing that because they sense the unbalanced voltage on the individual cells which is why they have "computer chips" inside the pack. Drone batteries I have used are "smart" like that as they have high and fast output and generate a lot of heat. The chips in them monitor and record each individual cell in the pack.