Quote:
Originally Posted by KaztheMinotaur
So the balance will be more accurate when balance charging at .5A instead of 5A?
After being on the blinky for a while (4) cells are 4.07 and the 5th. is 4.08. I'll balance charge it tomorrow.
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Not sure about "more accurate", but it will balance easier. If you are charging a 5Ah pack at 1C, that's 5A. Most balancers bleed off excess charge at a rate of 100mA-300mA. Normally this is fine for packs that are slightly imabalance. But a highly imbalanced pack may reach 4.2v/cell before the balancer has a chance to do its job.
Look at it another way: You are charging a 4s pack at 5A with a balancer capable of 100mA discharge rate. Let's say one cell is high, which means the balancer will bleed 100mA off the cell as it is getting the 5A charge, which results in a net charge level of 4.9A (5A-0.1A). Depending on how bad the imbalance is, that high cell could exceed 4.2v before the others catch up.
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