Key Features:

• Dual function: battery charger + power bank

• Supports Li-ion batteries (18650, 20700, 21700)

• USB output for charging smartphones and other devices

• LED display for battery level and charging status

• Multiple safety protections: overcharge, over-discharge, short circuit

• Compact and travel-friendly design

Specifications:

• Input: DC 5V/2A

• Output: DC 5V/2A (USB)

• Charging method: CC/CV

• Battery compatibility: single or multiple cells