Charge it!

But be sure to use a charger intended for LiPo batteries.

Also, when Lipos first came out a number of people experienced batteries catching fire when being charged. This is really bad news because once started the fire is self sustaining! It is therefore a good idea to charge the battery outside or on a non flammable surface.

I've being using Lipos for a while now, and they aren't that scary, however it never hurts to take a few precautions!

Terry