Got me a pvr for in car recording. Battery advise please
 

Howdy all,

I have a new yukai pvr h230 for recording my in car exploits on a rally in march.
It has an internal rechargable 2300mAh Li-ion battery.

Whats the best way to keep it in top condition? Charge it when needed and then leave fully discharged when not in use? Or charged always?