Features:

• LED Indicator - USB powered for convenience ... (5V 2A), Type-C USB port
• Charging Mode: CC & CV
• Ultra-compatible with variety of 3.6V/3.7V lithium batteries
• Auto-detect charging current: 2x1.0A/1x1.0A/4x0.5A/3x0.5A
• Automatically stops when charging is complete and prevents batteries from being over-charged
• Features reverse polarity protection if you accidentally insert a battery the wrong way
• 3 year warranty through Efest

Compatible with:

• 3.6V/3.7V Lithium Ion IMR Batteries – 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 20700, 21700, 26500, 26650

Technical stuff:

• Input – AC 100V-240V 50/60Hz or DC 5V 2A
• Output – 4.2V +/-.05V

What’s in the box:

• Efest SLIM K4 LED battery charger
• USB cable
• User Manual and Warranty Card
• Scratch-off validation serial number