Can I use lipo on a system that was designed for NI-Mh

[Happy_trucker]

I don't know if this make any sense but can I use a Lipo pack....say a 2s on a system that was meant to use Ni-Mh or does it not matter?

Also would a 3300 Ni-Mh pack last longer than a 2500 Lipo on a dirt truck??

[CreepyCrawl]

If the ESC has built in voltage cut off you'll be all set, otherwise you'll need to run an external cut off like the Novak Smart Stop or something similar.

You shouldn't discharge a Lipo beyond 3.4 to 3.7 volts per cell in the pack. Idealy you want to keep it closer to it's nominal voltage rating of 7.2 volts.

The 3300 NiMH will have more run time, but the 800 mAH difference versus the overall performance of a Lipo with a bit less mAH is worth the trade off.

I use Holmes Hobbies 3 cell 1300 mAH Lipos in my 2.2 and I'm pulling anywhere from 35 to 45 minutes on a 45T motor before the cut off kicks in.

The power delivery itself is far smoother and more balanced with a Lipo compared to a NiMH, and they weigh less as well.

NiMH cells start dumping as soon as they're taken off the charger. Lipo cells hold a charge much longer, and they discharge with more consistent power.

Cruise through the Holmes Hobbies threads...lots of good info in there on electronics and battery technology

[Happy_trucker]

thanks Creep!! j/k thanks creepy, i think i'll go with the lipo

[Scottmisfits]

Creepycrawl, where are you getting those voltages from. Quite a few manufactures say 3.0v/cell while others yet say it's safe to go as low as 2.7v/cell.