Don't Charge battery more than 2.5 hours. Package inc: 8x 14250 battery top flat,1x charger.Don't charge the battery over 4 hours. 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 the battery over 2.5 hours. 8X 14250 LS14250 1/2 AA Battery+Universal Dual Charger New Rechargeable 3.7V Li-ion for LED Flashlight Torch Headlamp top Flat k120. 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.