Features:

• Compatible with 21700 & 18650 lithium batteries
• Dual function as a battery charger or power bank for your other devices
• LED indicator shows charging status and automatic voltage detection
• 2x independently controlled charging slots
• Safety cutoff at 4.2V when battery is fully charged
• Reverse polarity protection
• USB-C
• Input: 5V 2A
• Output: 5V 2A