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J4 powerbank-Practical application version

Can quickly understand the advantages of J4 powerbank

J4 powerbank-Complete version

Complete version

J4 powerbank-Streamlined version

CJ4 Mobile Power - Key Version

JW cable box

Millions of users recommend - rapid charging cable box, for those who want to charge and often forget to bring the wire, you can refer to this video.

JW cable box - instructions for use

Operating instructions for the wire box for 2-in-1 (MICRO and IPHONE)

J4-Related test

Ios charging test

J4-Related test

Charging lamp test

J4-Related test

Positive and negative terminal protection IC

J4-Related test

Maximum current & excessive current protection

J4-Related test

Temperature over temperature protection IC

J4-Related test

Over discharge current protection IC

J4-Related test

Overvoltage protection IC

J4-Related test

Output Power Trial - (non-BSMI laboratory test - belongs to PCBA test efficiency mode)

J4-Related test

Output short circuit protection IC

J4-Related test

Output overvoltage protection ic