On Mon, 17 Aug 2009 10:03:00 -0500, "Karl Townsend"
wrote:

Somehat off topic... What voltage do those buggers operate at? I always
wondered if a trickle charger, the kind I use on my car or motorcycle
could even keep up if the voltage was compatible.

Mine's 12 volt, 36 volt is very common too. It pulls 50+ amps charging. I
tried a farm heavy duty charger at first many years ago, didn't have enough
power.

Karl

Most are 36 volts or higher. 48 and 72 are both common