I've got a bunch of dead cordless drill battery packs. I've got the bright idea to take them all apart and salvage the good cells out of them and make a mondo battery pack out of them. So far I've taken one pack apart. When I tested the terminals beforehand, I read 0V. I seperated each cell and they all read 0V. They read about .3Ω ±.05Ω. I figure they're probably all hopeless, but I've got one on the power supply right now trying to charge it. my questions:
What's a good set of parameters for charging? What I've read so far, recommends charging at 1/10C. I don't know what the Ah or C rating of this pack is, so I'm charging at 200mA, with a voltage limit of 1.2V. Is it safe to go >1.2V if the current is still <200mA?
does having 0.0000V acrosss the cell mean that the cell has 100% met it's demise?
What's a good set of parameters for charging? What I've read so far, recommends charging at 1/10C. I don't know what the Ah or C rating of this pack is, so I'm charging at 200mA, with a voltage limit of 1.2V. Is it safe to go >1.2V if the current is still <200mA?
does having 0.0000V acrosss the cell mean that the cell has 100% met it's demise?