The design with a highly integrated solution is a high-frequency, high-efficiency synchronous DC/DC reducer regulator capable of delivering an output current up to 6A. Integrates main switch and synchronous switch with very low RDS (on) to minimize conduction loss, internal soft start limits burst current.

Replaceable 3,7 V 1800 mAh lithium-iron rechargeable battery (size 18500) with JST connector with integrated protective plate to prevent overcharging and discharging.

Type C. That's the smart fast charging USB. Universal USB Type-C interface, multiple charging methods (max. 1 A), the charging cycle ends automatically when the charging current drops to 100 mA after reaching the final float voltage. When the battery voltage drops below 4.05 V, the charging cycle starts again. When the battery voltage is less than 2,9 V, the battery shall be precharged with a current of 100 mA.

You never know how much battery you have left with the smarcom indicator.
One-touch button to display five battery capacity levels. Red and green indicator to show loading progress.