Compatible with most Li-Ion 18350 batteries. LED light changes from Red to Blue when batteries are fully charged. We reccomend pairing any of our chargers with a 2.0A rated A/C adapter wall plug. 

Specifications: 

• For 18350 Li-Ion only
• Input: 5V USB Micro-B 2.0 
• Charging Voltage: 4.2V
• Charging Current: 800mA max

In the box: 

• x1 - 18350 Li-Ion Battery Charger
• x1 - USB-A to USB Micro-B Charge Cable