Has anyone purchased a 12.5 OSET bike for their kids? How have they held up. I might be in the market for one for my 4 hear old grandson?
How long does a charge last?

I have one. 1.5 hours is the longest we have ridden, and it still had plenty of charge. Just don't let kids wash with the water hose!

You might want to take a look at the recently added Trials Forum on the Georgia off road site.
My son was a bit too large, so Dad had to go and buy him a Rev. 80... Oh, but I can tell you that it still has not dampened his enthusiasm when he saw this picture of Eric's son... a good picture really is worth a thousand words. It seems that you can not go wrong...

http://www.georgiaoffroad.com/forums/viewtopic.php?t=26486