A123 charge rate?

[Unsullied_Spy]

Originally Posted by cdis

Was just looking at the stats for the 1210 and I'm a little confused.

It says that it's 180W max. So for example, could it charge my 7s A123 packs at 10A? Because ( [3.3v x 7] x 10 = 231W) which is obviously over the max output.

Or is it because, when it starts charging, assuming the pack is flat, the voltage would be lower (around 15v if the pack is dead), and so it can charge at the full 10A then, and as the voltage of the pack increase, the charger would decrease the output etc?

Picking chargers has always confused me lol :D Thanks for any help

You'll get about 7.8A charge rate when that pack is depleted, and it'll drop to 6.9A or so by the end.

Ouch. Well, I should mention that my 7s packs are made up of a 4s and 3s in series. So I guess I can charge them separately at the 10A rate and put them together, which is what I've been doing currently. Just wanted to see if there actually was a charger that was capable of charging the 7s packs at around 10A.

While I'm on the subject, I don't suppose there's any way to connect the balance taps of the 3s and 4s packs together so that if I decide to charge them as a 7s pack, I can balance at the same time?

I suppose I'd have to be very careful as to which way I plug the 4s and 3s packs into the series connector so that the balance connectors are also correct, but it should be possible right?