18650 20700 21700 Efest Slim K1 And K2

Efest K2 SLIM Charger: Compact and Efficient Battery Charger

The Efest K2 Slim is a professional and highly portable two-slot Li-ion battery charger featuring a Micro USB charging port. Despite its incredibly small size, it encompasses all the functions expected from a smart charger, including fast charging and reverse polarity protection. Designed for customers on the go, the Efest Slim K2 offers both quality and trendy aesthetics.

Features:

• Convenient LED Indicator
• 1A Fast Charging
• Compatible with 3.6V or 3.7V batteries of various sizes
• Reverse Polarity Protection
• Auto-Detect Charging
• Over-Charge Protection
• Short Circuit Protection
• Micro USB to USB Connection for Portability
• Two Slots, Each Charging at 1A (An exceptional feature compared to other chargers on the market)

Compatible with Battery Sizes:

• 20700
• 26650
• 18650
• 18500
• 18350
• 17340
• 16340
• 14500
• 10440
• 26500

Specifications:

• AC Input Power: AC 100-240V 50/60Hz
• DC Output Power: DC 5V 2A
• Auto Cut-off Voltage: 4.2 +/- 0.05V
• Storage Temperature: -40°C to +70°C
• DC Input Power: DC 5V 2A
• 1A CC Current: 1000mA +/- 10%
• CV Cut-off Current: <100 mA
• Activation Current: 50mA - 100mA
• Operating Temperature: 0°C - 40°C

Quality Assurance by Efest:

Efest ensures high-quality performance and safety through the following measures on each charger before releasing it to consumers:

• Utilizes piano springs
• Undergoes 15,000+ times spring testing quality warranty
• Features a fire-retardant shell
• Comes with Quality Certification