Efest Slim K2 Battery Charger

The Efest Slim K2 Charger is designed to work with a wide range of 3.6V/3.7V lithium batteries. These include, but are not limited to, popular sizes like 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 21700, 26500, and 26650.

Aside from its wide compatibility, the charger comes with a 5V/1A Micro USB input for charging two batteries simultaneously. The auto cut-off voltage is set at 4.20V (+/-0.05V) to prevent overcharging, while the auto recharge voltage is 4.10V (+/-0.10V).

The charger operates efficiently within a temperature range of 0°C to 40°C, and can be safely stored between -40°C and 70°C. The AC input power is AC 100~240V 50/60Hz, and the DC output power is DC 5V 1A.

The Efest Slim K2 Charger is designed for optimal convenience and safety, making it an essential accessory for anyone using rechargeable lithium batteries.

Ensure the longevity and optimal performance of your Efest Slim K2 Charger by adhering to these care instructions. Keep the charger in a clean, dry, and dust-free environment. Avoid exposing it to extreme temperatures, both hot and cold, and always store it in a safe place away from moisture. To clean the charger, use a dry, soft cloth to gently wipe away any dirt or dust. Avoid using any cleaning agents or abrasive materials, as they could damage the device.

Handle the charger with care to prevent any damage. Misuse, such as dropping or applying excessive force, can result in malfunction. Always use the charger for its intended purpose and ensure that it is disconnected from the power supply when not in use. The charger should not be left unattended while charging and should be kept out of reach of children at all times. Regularly check the charger for any signs of wear or damage, and if found, discontinue use and seek a replacement. By following these guidelines, you can maintain the charger's efficiency and extend its lifespan.

Using the Efest Slim K2 Charger is straightforward and user-friendly. Start by connecting the charger to a power source using the provided Micro USB cable. The LED indicator will light up to show that the charger is powered on.

Insert the batteries into the slots, ensuring that the positive and negative ends match the markings on the charger. The LED indicator will turn red to show that the charging process has begun.

• Do not force the batteries into the slots if they do not fit.
• Always monitor the charging process. Do not leave the batteries charging unattended for a prolonged period.
• Remove the batteries once they are fully charged. The LED indicator will turn green when the batteries are fully charged.

Following these usage tips will ensure a safe and efficient charging process. Always refer to the user manual for more detailed instructions.

The Efest Slim K2 Charger offers numerous benefits for users of rechargeable lithium batteries. Its dual-slot charging feature allows you to charge two batteries simultaneously, saving you time and making it ideal for devices that require multiple batteries.

The charger's compact and portable design makes it easy to carry, making it perfect for travel or everyday use. The charger's safety features offer peace of mind, ensuring that your batteries are not overcharged, and protecting against reverse polarity and short circuit.

• Wide compatibility with various 3.6V/3.7V lithium batteries
• Auto cut-off voltage to prevent overcharging
• LED indicator for easy monitoring of charging process

The Efest Slim K2 Charger is a reliable, efficient, and convenient charging solution. Whether you're charging batteries for electronic cigarettes, flashlights, or other devices, the Efest Slim K2 Charger is designed to meet your needs.