Had to return my 720 ... was rebooting every time I would try to route, and then finally just decided it had never heard of a GPS satellite.
Received a replacement (older) 720 from TT on RMA, but the prior user evidently didn't treat this one as well as I did mine. For one thing, the battery life is about 45 minutes.
It was too much heartburn to get the first one replaced. I'd prefer to replace the battery myself with a known good unit -- and given the way these devices are designed, they require a functional battery, even when on external power, so a spare might be a good idea for down the road a bit (literally and figuratively).
Does anyone know of a source for the Sony VF8 battery this thing uses, or a decent alternative?