1, flashlight cannot open

(1) is the battery storage capacity adequate?

(2) whether the tail cap and lamp holder are screwed tightly.

2 、 flashlight can't charge

(1) check whether the charger and battery are connected properly.

(2) is the battery available? Battery performance will decrease in a few years' time.

(3) the battery core is invalid.

3, appear astigmatism, not focus

Flashlight lamp cup, lens is a fingerprint or filth.

4, flashlight brightness is not enough

(1) check the battery storage capacity

(2) whether the lamp holder and the tail cover of the flashlight are screwed;

5, waterproof flashlight, into the water phenomenon

Check the waterproof apron of the torch for damage or lack of installation

6, the battery charge to the mobile phone, there is no response

(1) check the battery storage capacity is sufficient. (battery less than 10%, no response to cell phone charging)

(2) put the battery into the flashlight test and make sure it is open. The brightness is enough

(3) check the battery, DC charger and mobile phone connection is correct, the mobile phone charging socket is damaged, leading to charger socket loose, unstable connection

7 flashlight not normal shift

Check the switch for damage