There are 5 main reasons why a power bank is not charging:
1. The electrical outlet is not switched on (sometimes a wall switch has to be set on)
A working outlet is easy to verify: change electrical outlet or make sure the switch is on. You can even plug an electric device to see if it turns on. Even simpler, if you see the LED indicator flashing, it shows that electricity gets to the board.
2. The source of energy (wall AC to DC adapter, laptop output USB port, or car charger) is not fast enough or just not working
This is the most common reason for reported failure. It may be the case that you connect your power bank and wait for 6 hours and see only one bar blinking and wonder why it is not moving up. Here is the deal. The speed at which a power bank refill depends on the capacity of the wall adapter. Here are charging speeds you should expect for a 15,000 mAh power bank:
- 0.5 A : 30+ hours (if it even charges) Often shipped with older phones or typical output current out of the computer
- 1 A (5W): 15 hours. This type of wall adapter is often shipped with phones (Apple or Androids)
- 2A (10W): 9 hours. This type of wall adapter is often shipped with tablets.
3. The cable is not connected right. Remember: small end of the USB cable goes in the IN port of the power bank and the regular USB end goes in the power source.
When refilling the portable charger, you should plug the micro USB to the 'IN' port and hook the USB end to a power source like an electrical outlet. Sometimes, the cable is not inserted fully to the port of the portable charger. Check both the micro USB and the USB end of the cable to ensure power bank charging.
4. The cable has defects or cannot support high speed charging
This can be easily verified by changing the micro USB cable for another one or finding another device that can be powered by it and see if the cable works. This is really rare (no instance reported yet) that our provided cable does not work (if not visually damaged), but not impossible. Normally, if the LED indicator flashes, it means that the power bank receives electricity and the cable is ok.
5. The portable power bank has a defect
Viivant portable chargers are tested and inspected numerous times before going out to the market. But one or two might encounter defects, though these events are rare. Electronics are sensitive items. Remember, that, at Viivant, we want you to enjoy our products! So if the tips given here cannot help you, we can work on getting you a new working unit!
6. If your power pack is off warranty - Get a new one with 2 year warranty