Cijoy ego-v vv

[dannyd]

I bought one of these from my local b+m over the weekend. Seems to work pretty well though the battery only lasts me about 10 hours. It is a 650 mah. My first ego twist style batteries were very cheap and have since broken, but as long as they worked they lasted me all day. Is cijoy a decent brand? I paid $49 for it which I know is high, but it came with a lifetime warranty. Guy said I should never have to buy another one as long as I dont lose it. Just curious if I bought junk. Any thoughts would be appreciated.