The Xtar O4S is one of the fastest chargers on the market, capable of charging both slots at 4.1A. Built in temperature sensors and an internal resistance check provide safety protection.

Due to the high charge current of this charger, please make sure you are meeting battery specifications. Please also note that increased battery wear will occur when charging at higher rates.

Please find the max charge ratings of some common batteries we carry below.

• SONY US18650VTC4: 4A
• SONY US18650VTC5: 4A
• SONY US18650VTC5A: 6A
• SONY US18650VTC6: 5A
• LG INR18650HG2: 4A
• Samsung INR18650-30Q: 4A

Features

•     Battery internal resistance testing protection
•     Battery temperature testing with overheat protection
•     1A/2A/4.1A optional current for each slot
•     Dual 5V/2.4A USB ports
•     Informative LCD screen display
•     All-around protections

Specifications:

• Input Power: DC 12V/4A
• Cut-off voltage: 4.2V +/- 0.05V
• Charge current: 1A/2A/4.1A x 2
• USB Output: 5V 2.4A x 2

Compatible with:

• Li-ion:  18650/18700/20700/21700/22650/26650

What's Included:

• Over 4 Slim Charger, Wall Adapter, Instruction Manual