Because I'll probably eventually go brushless, I'm going to start with LiPo batteries right off the bat so I won't have "useless" NiMH packs sitting around post-conversion. As top speeds aren't too important to me I'll settle on a pair of decent 2S packs to wire in series. The goals are:
Little wasted expenditure after brushless conversion
Easy conversion to and from brushless motor/ESC
I think I'll need to buy:
2x 2S LiPo packs (to be determined)
1x 4S Low Voltage Cutoff
Extra connectors/wiring to make a Y harness, and to add the LVC
I think the wiring should go something like this:
The pair of batteries will attach to the rightmost pair of black/red ESC inputs, and the leftmost pair, which apparently just short inside the ESC to connect the batteries in series, will be left untapped.
Does this setup let the ESC's BEC do its job?
If not, can I wire each battery directly to the ESC as with NiMHs, and connect the 4S LVC to the "most negative" and "most positive" battery inputs? The goal is to run without a separate BEC.
I read that LiPo batteries cannot get wet. Is this true? Would minor dampness from running around in snow or even the occasional splash though a small puddle be ok? I don't plan on using the Revo as a submarine, but doing some winter wonderland bashing would be fun. Alternately, would using A123 cells make the packs more water resistant?
(Images stolen from http://scriptasylum.com/rc_speed/_wiring.html and tweaked)