RE: Im building a 12S A123 from dewalt pack
Two 125 Ah / RC210 in parallel. Total of 250 Ah and 420 min. / 7 hours Reserve minutes.
Reserve minutes is time a 25A load casn be substained by battery.
This setup is capable of charging 300 ea. A123 2300 cells from empty to full.That' 100 3S pack , 75 4S pack ,30 10S packs etc. take your pick.
Most times I fly between 4 and 7 packs of between 3S and 5S and after a session they are still at or above 90% charged.
Charles