Panasonic NCR18650B Non-standard battery (rechargeable) 18650 Li-ion 3.7 V 3350 mAh | Conrad.com
Big Capacity 4PCS 2200mAh 3.7 v Batterie 18650 Li ion Rechargeable Battery For LED Flashlight Torch Wholesale|3.7 v batteries|battery 18650rechargeable battery - AliExpress