Soupman68

I just got a Thunder AC6 charger and I want to make sure I am charging my Nimh batteries right. I have 2 batteries, a Traxxas 8.4 7cell 3000mah and a Dynamite 804 7cell 3300mah. I am using the auto feature to charge them. It shows charging at 5amps, and fluctuating around 9 to 11 volts. is this right? the batteries get very warm. I am new to all of this so any info will help.

Chase1472

iTrader: (76)

thats correct, nimh do get warm normally.. I would charge at 4 amps though.. you might want to start researching LiPo battery's for the future.

Duster_360

iTrader: (21)

Unless those are new batts, you can get a better charge using manual, charge at 3amps and 3.3 for starters with the peak sensitivity as low as it will go (think this is limited to 5mv/cell) and see hot hot they get when they peak. They should be hot since NiMh peaks at ~120F, but not hotter.

If they are cool, you can start inching the charge rate up - I charge my 4000mah NiMhs at 5amps, you should be able to get to 4amps at least with the 3300mah ones.

Soupman68

Oh yeah, liPo's are in my future for sure.

Soupman68

Yes they are both new. Thanks for the info, it helped.