Agreed very handy in this regard. Actually charges up to 3C Auto, but also manually selectable up to 15 amps in 0.1-amp increments.
Right now I am charging a 2S LiIon 2600mAh which I use as a Tx battery. Also charges LiFe, NiCd, NiMH, A123, lead acid, etc.
I have a 75-amp 13.8v PS in the attic if all else fails.
