So I'm new to the rc world. Just got a new E-MAXX with the stock traxxas 3000 mah NiMH batteries. Ive been reading on here that i should charge them at around 3 amps? But the instructions that came with my onyx 245 charger said that for NiMH packs from 2500mah - 5000mah i should set the charger at 5 amps. What should i be doing?