2pcs BORUiT 18650 3.7V 1500mah Lithium Battery For Headlamp Flashligh With PCB

2pcs BORUiT 3.7V 1500mah 18650 lithium battery for headlamp flashligh with PCB Instructions for use 1. check the battery: ensure that the battery is charged and loaded into the flashlight in the correct direction. 2. flashlight in use, according to the requirements of the flashlight on the voltage and battery selection, do not use indiscriminately to prevent burned circuit board, different models, different voltage batteries do not use at the same time. 3. in use, when the flashlight brightness changes significantly to turn off the flashlight to prevent the battery power over discharge, and timely charging; pay attention to the battery waterproof, moisture-proof, drop-proof, etc., charging according to the charger charging fast and slow, after the light becomes, timely removal, do not overcharge. 4. batteries that are not used for a long time, the battery should be filled and maintained, normally in about three months and then charged and discharged once to avoid chemical corrosion. 5