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The longest life time

June 10,2019 -

520 times re-charge & discharge lifetime,in all world longest life time power bank manufacturer ——toptai.

powerbank self discharge and endurance test regime       The 5200mah portable charger is composed of two 2600mah batteries.These batteries are tested for endurance by charging and discharging them repeatedly to simulate use.One cycle refers to one charge and on e discharge of the battery.

Shenzhen TOPTAI technology co., ltd