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

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

Foxelli USB Rechargeable Headlamp Flashlight – amazon.com

Flashlights made in the USA – LED Flashlight, Headlamp

INOVA® T10R™ Rechargeable Tactical LED Flashlight + Power …