Hi,
I'm new to this forum, but joined to try and get a bit more info about Oset bikes and batteries (Google searches link to this site). My son has a 20R and the run time was pretty poor, so I bit the bullet and ordered a Boost Lipo batter after speaking in depth with a trials dealer in the North of England. The link to the page is below: http://2machsmotorcycles.com/?product_cat=oset-batteries-lipo-standard I've only had the battery for a few days, but the difference is night and day; the bike runs 2-3 times longer easily and charges pretty quickly on the supplied charger. Not cheap, but the best upgrade you can do.
Hope this helps.
