Does exactly what it should, and even lights up in the dark even after.

Does exactly what it should, and even lights up in the dark even after.

THUMBOX Power Tube 10400 XXXL portable external universal battery for cell phone / tablet / smartphone / MP3 player (10400mAh) blue (accessory)
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Customer Review

Important: must for charging the battery pack of 3.7V to 5V high margins, thus cause losses of about 20% -25%. This leaves for the charge effectively only 7800mAh - 9120mAh left. This is not mentioned in the product description in the attached Summary of it is however mentioned.

Otherwise, there is nothing to complain about. The plastic sheath fluoresces some time in the dark, so that one the battery pack when camping at night in the tent can still find good.

One should the pack at the start of a discharge-twice full load and, as it reaches its full capacity.

If the connected device is charged, the charge will be automatically canceled and must be manually activated via the push button again, if desired.

All in all a great device.

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