The price on this page is for a single product. The minimum order quantity is 500 pieces. Please contact the supplier for shipping and estimated delivery time.

一. Instructions for use of the switch
1. The positive pole of the battery faces inward (on the lamp head side) and the negative pole faces outward (at the tail).
2. The switch is at the tail. Pressing it fully is the switch function, and pressing it lightly is the light level adjustment function.
二. Instructions for use of the circuit board
1. Our flashlight adopts advanced voltage-stabilizing and constant-current technology, which can effectively solve the requirements of LED flashlights for voltage-stabilizing and constant-current.
2. Special tips:
a. Do not use overvoltage, and the voltage should not exceed 4.2V
b. The positive root of the battery faces forward, do not reverse it, otherwise it will burn the board
c. Pay attention to controlling the temperature change of the flashlight to ensure heat dissipation
d. Non-professionals should not open the circuit board
3. Warranty description: Opening or handling the circuit board is no longer within the warranty scope.
三. Instructions for use of lithium batteries
1. Features of lithium batteries: The charging method of lithium batteries is completely different from that of mobile phone batteries; lithium batteries have no memory and can be charged at any time. Do not overcharge or over-discharge.
2. The first charge takes at least 6 hours, and then it can be charged according to the green light of the charger. There is no need to overcharge.
3. Special reminder to use a "three-proof" charger that is anti-overcharge, anti-reverse connection, and anti-short circuit;
4. If the battery is not used for a long time, it should be fully charged and stored, and normally charged and discharged once in about three months.

四. Instructions for use of the flashlight
1. When using the flashlight, choose according to the flashlight's requirements for voltage and battery. Do not use it indiscriminately to prevent burning the circuit board. Batteries of different models and voltages cannot be mixed and used.
2. During use, when the brightness of the flashlight becomes significantly dim, turn off the flashlight to prevent over-discharge of the battery.
3. Usage tips: During the use of the flashlight, heat dissipation must be ensured. When the battery is strongly required to be fully charged, it is best to use the second gear first, so that the flashlight head and battery can extend the product life! The flashlight light cannot be directed into people's eyes, which is super bright and dazzling, so as not to affect vision, especially children.

五. Fault troubleshooting
1. Check the battery: Make sure the battery is charged and install the battery in the correct direction. Do not use batteries of different brands, and do not mix new and old batteries.
2. Check the tail cover: make sure the switch is tightened and in good contact, ensure that the copper column of the tail cover is in good contact with the metal sheet of the tail cover pressure ring, and pay attention to whether the lamp holder is loose.