Don't Charge battery more than 2.5 hours. Package inc:2X 14250 top Button,1x Universal Dual Charger. For your LED Torch Flashlight Headlamp. For your Green/Red Laser Bore Sighter Collimator,Infrared laser sight. For your hand grip,Mobile selfie stick. For your insulin pump. Don't Charge battery more than 2.5 hours. 2X 14250 LS14250 1/2 AA Battery+Universal Dual Charger New Rechargeable 3.7V Li-ion for LED Flashlight Torch Headlamp top Button. Please attention to the direction of the positive and negative poles, DON'T place them in the wrong direction. Please use the correct charger model.