RE: Spare Battery for Royal evo
Something is wrong with your system. You should get closeer to 9 hours on a charge. I use the wal wart that came with the Evo, I leave it on charge long enough to top the battery off. I get close to 9 hours flight time consistantly. If you are getting only 3 hours you need to fix something. If it's glitching as well I'd shelve it until it's fixed. Hitec support is really good, give them a call and they will help you out. Mike may still be in Germany or something so he may be slow to chime in on this forum.
happy trails- Rob G