2023 18650 recharable battery 3.7V 6800 mAh 18650 rechargeable lithium-ion battery 3.7V for LED flashlights - AliExpress
High Capacity Lithium Ion Battery Cell 21700 4800mAh 5000mAh 3.6V 3.7V 21700 Akku Button High Top - China 21700 Battery, Battery 21700 | Made-in-China.com