Output:3.7V 500mAh. Input:5V 0.5-2A. The plug adopts a snap-on design, which is safe and tight for charging without leakage.
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Pallus Rechargeable AAA Lithium Batteries, High Capacity 1100mWh, 4PCS 1.5V Lithium Battery AAA with 4-Slot Voice-Reminder Charger