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pinkpanda3310 · 06.14.2012, 07:53 PM

I don't have that charger, I have a cheap chinese one. It is not accurate when balancing and over time I beleive it has gotten slightly worse. Some packs it can balance to with in 0.02v, these are usually packs with less cycles, charged at less amps and don't require a whole lot of balancing to start with.

Other more dodgey packs I have (reclaimed A123's from dewalt battery packs) get to with in 0.05 - 0.07v and will not balance. I am not able to measure the resistance of the cells but I suspect that is what is screwing around with the charger.

That's how I understand it anyway. The different resistance causes the cells to relax to different voltages, when a cell will not hold 4.19 - 4.20v and others will, the charger/balancer is constantly working.

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pinkpanda3310 RC-Monster Titanium Offline Posts: 1,152 Join Date: Sep 2008	06.14.2012, 07:53 PM I don't have that charger, I have a cheap chinese one. It is not accurate when balancing and over time I beleive it has gotten slightly worse. Some packs it can balance to with in 0.02v, these are usually packs with less cycles, charged at less amps and don't require a whole lot of balancing to start with. Other more dodgey packs I have (reclaimed A123's from dewalt battery packs) get to with in 0.05 - 0.07v and will not balance. I am not able to measure the resistance of the cells but I suspect that is what is screwing around with the charger. That's how I understand it anyway. The different resistance causes the cells to relax to different voltages, when a cell will not hold 4.19 - 4.20v and others will, the charger/balancer is constantly working.