Charge it, and charge it now.
Sorry. We know that you were diligent about putting all of the pieces of your Marc Pro Muscle Conditioning Device back in its carrying case when you were done. But for whatever reason, providence was not with you on that fateful day, that horrid day when you lost your battery charger. Your recovery has since ground to a halt. Every day, your tired muscles are filled with agony, defeat, and waste, crying out for electrical stimulus. Over time, these shrieks and howls have become persistently louder and louder, to the point that you would give anything, waste anyone just for a single good night's sleep absent of the dismal cacophony of your muscles' lament. Alas, this entire time, all that you needed to do was go on the Internet and order the damn Marc Pro Replacement Battery Charger. Here it is — put it to good use.