18650 to 21700 battery adapters in comparison

Essential accessory for your travel energy needs.

Universal charger REACELL charger for 3.6V 3.7V Li-ion 10440, 14500, 14650, 17500, 17670, 18350, 18500, 18650, 20700, 21700, 22650, 25500, 26500, 26650, 16340 rechargeable batteries.

HIGH QUALITY MATERIAL The battery charger is made of ABS material, drop resistant and not easy to be deformed and damaged, built-in multiple protection mechanisms to prevent over-current, over-charging, over-voltage, short-circuit and overheating. Ensure the safety of your batteries and devices during the charging process.

ABS componnet, providing a lightweight yet efficient solution to battery rattling and ensuring proper alignment

Dual-slot independent charging The charger has 2 independent charging channels. Each battery slot is independently controlled without affecting each other. It can charge one or two batteries at the same time, and can also charge 4.2V and 1.2V batteries at the same time.

Upgrades your devices energy capacity with this easy to use 18650 to 21700 Battery Adapter, ensuring your electronics are charged and ready to go

This adapter is designed to provide greater flexibility and convenience for flashlight users ect, allowing them to utilize their existing supply of 18650 batteries without having to purchase a new 21700 battery. By simply inserting the 18650 battery into the adapter, users can enjoy the same level of performance and reliability as they would with a specialized battery.

Craft from and metal, for long time use.

Essential accessory for your travel energy needs.

Essential accessory for your travel energy needs

This adapter is provide greater flexibility and convenience for flashlight users, allowing to utilize their existing supply of 18650 batteries without having to purchase a new 21700 battery.

Ensuring a snugs fit for 18650 batteries within 21700 sized flashlight compartments with this ABS adapter sleeve, enhancing stability and connection