One piece from batch, special for 2 yuan store, 10 yuan store, multi-store supply, gifts customization, fair trade exports.

A. Switch instructions
1. The battery is positive inward (the light head side) and negative outward (the rear).
2. The switch is at the end. The switch function is the switch function.
2. Circuit board instructions
1. The flashlight of our store adopts advanced constant voltage current technology, which can effectively solve the requirement of LED flashlight on constant voltage current.
2. Special note: a. please do not use the overpressure, and the voltage should not exceed 4.2v b. do not turn the battery forward, or it will burn the board
3. Warranty description: open or treated the circuit board is no longer under warranty.
3. Instructions for lithium battery
1. Features of lithium battery: the charging mode of lithium battery is totally different from that of mobile phone battery; Lithium batteries have no memory and can be charged at any time.
2. Charge for the first time for at least 6 hours.
3. Special tips: use the \"three-proofing\" charger with anti-overcharge, anti-reverse connection and anti-short circuit;
4. If the battery is not used for a long time, the battery shall be fully charged and saved, and the battery shall be charged and discharged again normally within three months or so;
Four. Instructions for use of the flashlight
1. When using the flashlight, select the voltage and battery according to the requirements of the torch. Do not use the battery indiscriminately to avoid burning the circuit board.
2. In use, turn off the flashlight when the brightness of the flashlight changes significantly, so as to prevent the battery from overshooting.
3. Heat dissipation skills: during the operation of the torch, ensure heat dissipation. Strongly request battery full charge time, had better use second, such can let the lamp head of flashlight and battery get extend product life! Do not shine the flashlight directly into your eyes, so as not to affect your eyesight, especially children.
Five. troubleshooting
1. Check the battery: make sure the battery is energized and installed in the right direction. The batteries of different brands are not allowed.
2. Check the tail cover: ensure that the switch is tightened and in good contact with the tail cover; ensure that the copper column of the tail cover is in good contact with the metal piece of the tail cap; pay attention to whether the lamp holder is loose.