The power indicator is off. Cause:
< br >
1, the internal battery power is too low, not timely charging;
< br >
2, the output jack or output connection line is faulty (some mobile power load open circuit indicator is not bright);
< br >
3. The mobile power supply itself is faulty (such as poor contact of the charging input jack or damage to the internal circuit);
< br >
4. The indicator light (LED) is damaged. It can be dismantled for repair or sent for repair.