WhataNut FMA PowerLab8 1000W charger

[snellemin]

It was the cheapest solution for me. And I get to add as many connectors as I like to the output. Next up is making an extension for the balancing wire harness.

I'm charging the 2s 5000mah Acepow packs at 40A. The 4s pack at 35A. The A123 1p packs at 20A and the 2p packs at 40A. It's so nice not having to wait 10 minutes for a battery pack to charge. But my 8 year old son still complains after 5 minutes of waiting for his packs to finish.
I cycle the lipo's and A123's with 40A regenerative discharge.

I found that cycling the packs once or twice has the same effect as warming them up before usage. Resistance of the cells go down, especially the A123's. To achieve this, I don't do the cooldown between cycles.