batteryless flashlight nitecore 14500

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4. Excellent Performance: MT10A utilizes CREE XM-L2 U2 LED, Maximum output to 920lumens, can last 100 Hours by IMR Battery, Provide beam distance, intensity and power efficiency

EA11 Battery CREE XM-L2 U2 900 lm LED with Secondary Red Output, Black, Left/Right. Fenix 155 lm MC Series , Black.

NL1475R 750mAh Built-in Micro-USB Rechargeable Li-ion Battery.

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

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

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

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