i bought a rc18mt lil electric truck

it came with a 1100 mah nimh battery. i also bought a 1400mah as well.

the LHS conned me into buying this charger http://www.horizonhobby.com/Products...ProdID=DYN4044

based on the LHS dudes advice, i charged them both @ 4amps the first time.

the batteries got "warmish hot"

but both ran well, and lasted about 15 mins.

but then i read that i shouldnt be charging these batteries at higher than 1amp, or it could damage them.

so i charged them at 1 amp like, the 3rd charge in. and i worked fine (apparently)

both batteries seemed to lack full power (truck didnt go as fast)

so after they were run down, i tried to charge at 1 amp again.

after like 5 mins, all the lights start flashing like i have it set on the wrong cell count (its 6, checked and rechecked)

and now, no matter what amperage i set the charge rate to (1,2 or 4 amps) all the lights start blinking at least once during a charge, and i have to reset the damn thing.

what am i doing wrong?

did i ruin my batteries by charging them at 4 amps the first time?

is this charger a POS?

what should i do?