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We always recommend to fully charge the powerbank for the first time.
The time for a full charge depends on the capacity of the powerbank, the remaining power in the powerbank and the power supply.
Please consult the quick manual for the estimated charging time for the first use.
If your device is actively in use during the charging process, the charging performance may be elongated.

In general all our powerbanks are suitable for air travel, since they confirm to the general requirements of a capacity of less than 100 Wh (Watt hours) and 2 grams lithium, as long as you keep the powerbank in the carry-on/hand luggage (and not in checked luggage) and declare the powerbank at customs.

However, requirements depend on the airport you are travelling from and the airline you are travelling with. We advise to always check in person with the airline, by either calling or chatting, before travelling for more information.

To determine Wh: (mAh x 3.7V)/1000
For example, a 20.000 mAh powerbank would be (20000 x 3.7)/1000  = 74 Watt-hours.

It can take 8-16 hours for a full charge, depending on the charger used.

This powerbank doesn't support this pass-through charging function.

Portable batteries that have 10W or 2A output can charge tablets.
If the portable battery has 5W or 1A output, it can charge smartphones but not tablets (except for iPad mini).

This depends on battery capacity (mAh) of your phone and age of the battery.
The bigger the capacity of the battery, the more likely it can charge your smartphone fully, or even multiple times.

Even though you may use the same charging method, the charging time may differ due to environment, temperature, power flow, etc.

Generally, a properly maintained powerbank can retain up to 80-90% of its original capacity at 500 charge and discharge cycles.
(charge then discharge = 1 cycle, regardless of whether you charge/ discharge it partially or fully).

When your powerbank is not charging, try the following:

• Use other charging cables
• Use another USB-charger
• Use another power outlet

Charge the powerbank in a cool place, connected to a good quality USB-charger that goes in the power outlet. Then just let it charge for at least 8 hours. 

When the powerbank is charging the light of the status bar will be flashing blue, this is normal behavior.

Every blue led is a status:

• 1 led > 25% charged
• 2 leds > 50% charged
• 3 leds > 75% charged
• 4 leds > 100% charged

The upper led could keep blinking as long as the powerbank is connected to the power source.

Please disconnect the powerbank from the power source, when the powerbank is charged.

Now you can start charging your phone/tablet.

Try both cables to charge the device: the supplied cable and an original charging cable of your phone/tablet.

If your powerbank can't charge your phone, check the following:

- Check if the capacity of the powerbank is suitable for your phone.
- Some smartphone cables might not be compatible with a powerbank due to different cable chipset design. We recommend using the cable and connector meant for the powerbank.

You can conduct some simple tests to identify the issue.

If the powerbank can't charge the device, make sure the powerbank is fully recharged.

If the powerbank is charged, the issue will most likely be with the cable.
You can try to use another cable to charge your device.

If it still doesn't work, the issue might be with the powerbank itself.

You should contact the support team via the 'ask a question' section.

It is normal for the charger and device to get warm during charging and discharging.
They may get even warmer if you use your device while charging.

Unfortunately, we do not have service centers to repair products.
A defective product should be replaced by your point of purchase during the warranty period.

We offer a 'return to retailer' warranty on our products. In case of a defect, you can return the product to your retailer with failure description, proof of purchase and all accessories. During the warranty period you will receive a replacement product from the retailer if available. For full warranty conditions you can consult: https://www.trust.com/support/warranty