Just wondering if anyone had used or had any success with these (what seem to be knock off) XTS batteries. We received a shipment of 20 or so of these batteries at the career department I work for and they seem to be junk. Not holding a charge, sometimes bank charger won’t even recognize a battery is in it, just all around unreliable. Could it just be a bad batch? Also is there a way to tell when it was made? Maybe they had been sitting in storage for years before being sent up to us?