Uploaded March 2015 | Updated September 2026, 1 day ago

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20000mAh High Capacity External Battery Avantek Review - taking a look at the Avantek 20000mAh Android Smartphone and Tablet battery pack.

amazon.co.uk/AVANTEK-20000mAh-Dual-Port-Flashlight-Smartphones/dp/B00RYXQ6RM/ref=cm_rdp_product

What makes this special other than the insane capacity is its 2x USB ports allowing you to charge two devices at the same time.

The weight gain by the extra battery is substantial but it's hard to deny how useful having all that extra battery power is.

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