Nitecore 18650 Rechargeable Li-Ion Battery with Micro-USB
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Panasonic NCR18650B Battery - 3400mAh Flat Top | Battery Junction
18650 Rechargeable Batteries, 3.7 V Li-Ion Battery 1800 mAh Full Capacity Lithium Batteries 18650 Battery, for Solar Lighting, Bell, Garden Lights, Pocket Lights (Button Top, 2 Pieces) : Amazon.com.be: Home & Kitchen