It is recommended so that you do not damage the PPC or the battery, that you fully charge the PPC from red to green, after that is done you can charge you battery on your PPC while it is NOT charging. The battery can charge anywhere from 4-6 times on a full PCC.
Also note, you don't need to plug your battery in after each use, or the PCC, use the battery for a few hours then let it charge, also watch the charge once the red light blinks or goes out when charging the battery that means the battery is done and needs to be unscrewed, leaving the battery plugged in when completely charged can drain both your PCC and your battery.
So in short:
*Charge PCC by it's self (red charging, green done)
*Charge battery only when PCC is unplugged (Battery: Red = charging, blinking red/no light = done)
*When either
devices are done charging make sure to unplug them for safety issues.

I hope this helped!
Enjoy
