Originally Posted by imsofaman
I have the larger A123 cells. What amperage should I charge them at?
A123 M1 cells, that are 2300mAh, can be charged faster than this charger can. 10A alias full power that You can supply, is adequate. Do not hesitate..
All You can be afraid of is capabilities of Your power supply.
Even small, 1100mAh A123 M1A cells/packs, can be charged at 10A. Here a little care should be taken and too high temperature should be avoided before charge.
But be sure they are really A123, not another types of LiFe cells. They are different.