My Triton2 does that too. It charges at 1C until it reaches 4.2v per cell then backs off the amps until it's reached 1/10C then it declares it's done. One other thing I've noticed with the Triton2 is it seems to evaluate the starting voltage at first with a small current before it ramps up to full 1C. One time I discharged my 5 cell pack to 16 volts and the triton2 then applied a small current and when the voltage reached 18 volts it started the 1C charge rate.