EagleTac Protected 18650 2500 mAh Rechargeable 3.7V Li-Ion Battery Drop Point but will work with any

but will work with any 20mm diameter lights

19:Power indicator displays battery voltage

which allowed to increase the brightness of the light flux to 6200 lumens

Charger has Auto Shut off ("Smart Charger") and a backup safety timer

Its shock-proof capability as well as perfect constant current circuit without flickers also makes it a good light to be mounted on bikes

EagleTac Protected 18650 2500 mAh Rechargeable 3.7V Li-Ion Battery Drop Point but will work with anyEagleTac Li Ion 3. 7V 2500 mAh Rechargeable 18650 Battery. Please check manufacturer specifications before inserting one of these batteries in a light to ensure compatibility. Putting a lithium ion light in a light that is not made to handle them can possibly ruin the light. Please note that we cannot ship lithium batteries of any kind to an international address via USPS. International orders containing only lithium batteries will be canceled and