Product Details:Dimension: L 3.15 inches * W 3.05 inches * H 0.78 inchesWeight: 8.82 OZCapacity: 2600 mahBattery type: grade A 18650 lithium batteryOutput: 5V/1A (1A current output is the best design for 2600 mah 18650 battery, it is more stable...

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