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Battery Type: 2 x battery. Time Limit: About 2 hours. times: Up to 1800 times.

Image not available for Colour: 8x Li-ion Battery for Ultrafire LED Torch. by XIYAN LEI. 3.9 out of 5 stars 19 customer reviews.

https://en.wikipedia.org/wiki/Rechargeable_battery

https://en.wikipedia.org/wiki/Rechargeable_alkaline_battery

Amazon.com: 18650 rechargeable flashlight

rechargeable flashlight 18650 | eBay