V-TAC VT-3517 Manuel D'instructions page 6

ENGLISH
HOW TO USE IT
1. Display capacity (Note: Applicable for models with LED indicator):
Press control button, capacity LED will be on, 10 seconds later they will be off
automatically.
4 LEDs on: 75%~100% remained.
3 LEDs on: 50%~75%remained.
2 LEDs on: 25%—50% remained.
1 LEDs on: less than 25%
2. LED lighting (Note: Applicable for models with LED flashlight)
Press control button over 2 seconds, the flashlight will switch on. Press
control button more than 2 seconds to switch off the flashlight.
3. Charge portable power bank
The applicable standard cable plug in the computer USB or USB charger,
connect to the Micro USB of mobile power, automatic wake-up charge. During
charging, the battery indicator light cycling starts; full power indicator light
indicates charging completed.
4. Use portable power bank to provide power to any digital device. Using the
cable and adapter for the digital products, the electronic switch will be open
automatically, output 5V voltage for use. (See Figure 3)
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