The Efest Slim K2 Battery Charger offers a high-quality, cost-efficient, and portable design to charge your 3.6V/3.7V lithium batteries used in a variety of devices. With dual slots and Micro USB input, this charger charges at 1A and monitors each slot independently for optimal efficiency. The LED indicator displays charging progress and notifies when the battery is fully charged. Additionally, the charger includes safety features such as reverse polarity, short circuit, and overcharge protection for peace of mind. Get reliable and versatile charging with the Efest Slim K2 Battery Charger.

Features and Specs:

• Compatible with: 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 26500, 26650
• Portable Design with Quality Piano Strings
• Battery Life LED Indicator Light
• Dual Slot 5V/1A Micro USB Charger
• AC Input Power: AC 100~240V 50/60Hz
• DC Output Power: DC 5V 1A
• DC Input Power: DC 5V 1A
• 1A CC Current: 1000mA (+/-10%)
• Auto Cut-Off Voltage: 4.20 (+/-0.05V)
• CV Cut-Off Current: <100mA
• Standby Current: <20mA
• Activation Current: 50mA~100mA
• Auto Recharge Voltage: 4.10 (+/-0.10V)
• Operation Temperature: 0C ~ 40C
• Storage Temperature: -40C ~ 70C