Features:
Ultra compact design with greatest compatibility.
Compatible with all 5V USB power including USB wall adapters, cell phone chargers, solar panel, PC USB, power banks, etc.
Recondition and refresh old or over-discharged batteries.
Prevent the battery from falling out in any cases.

Specification:
Input: 5.0V DC/ 500mA
Constant Current Output: 500±50mA
Cut-off Voltage: 4.20±0.05V
Terminal Current: <40mA
Compatible with: 10440/14500/14650/16340/17500/17670/18350/18500/18650/18700/22650/25500/26650 3.6V / 3.7V
Circuit Protect: Yes
Short Circuit Protect: Yes

Package Content:
1 X Universal Lithium Battery Charger