NiteCore NL1834 Non-standard battery (rechargeable) 18650 Li-ion 3.7 V 3400 mAh | Conrad.com
18650 Protected Button Top battery Panasonic-Orbtronic (FREE Battery Holder) 3400mAh
Amazon.com: SHENMZ 4-Pack Battery for 3.7V 3400mAh Flat Top Battery, Rechargeable, 2 Bay USB Battery Charger for Flashlight, Camera, Small Fan, Sound Equipment. : Electronics
Camera West
18650 Protected Button Top battery Panasonic-Orbtronic (FREE Battery Holder) 3400mAh
Hot Original LiitoKala 18650 3400mah NCR18650B 3.7 v 3400 mah 18650 Lithium Rechargeable Battery For Flashlight batteries - AliExpress