Efest SLIM K2 Intelligent Charger Features:

• 2 Bay Compact USB Charger
• Single charging speed - 1A x 2
• LED charging indicator
• Compatible with 18650, 20700, 21700, 26650 and more
• Reverse polarity protection protects if the cell is entered in the wrong way
• Fast Charging Mode: 1.0A
• Auto Detect Charging Function
• Low Voltage Activation Function
• Short Circuit Protection
• Reverse Polarity Protection
• Over Charging Protection
• Piano Wire Spring Provides Smooth Sliding Action - 15000+ Tensile Test
• Chromium Plated Steel Cathode Insures Low Resistance While Achieving A More Precise Charging Voltage

Specifications:

• Input: DC 5V 1A
• Standby Current: <20mA
• Activation Current: 50mA - 100mA
• 1.0A CC Current: 1000mA ± 10%
• Auto Recharge Voltage: 4.10V ± 0.10V
• Auto Cutoff Voltage: 4.20V ± 0.05V
• CV Cutoff Current: <100mA
• Operation Temperature: 0°C ~ 40°C

Compatible with:

• 3.6V/3.7V Lithium-ion Batteries
• Most Cylindrical Lithium-ion Batteries Ranging In Size From 10440 To 26650

Packaging Contents:

• Efest Slim K2 Battery Charger
• USB Cable
• User Manual