The Efest Slim K4 USB-C Charger is a compact yet powerful 4-bay charger designed for vapers and tech enthusiasts who need a reliable and efficient way to charge their lithium-ion batteries. Known for its portability and sleek design, this charger offers rapid charging capabilities via a USB-C interface, making it compatible with modern devices and charging standards. Ideal for use at home or on the go, the Slim K4 is perfect for those who need to charge multiple batteries simultaneously without sacrificing speed or efficiency.
Efest is a well-known brand in the vaping industry, producing high-quality charging devices and battery accessories. The Slim K4 is no exception, offering intelligent charging, with built-in protections such as overcharge, short-circuit, and reverse polarity protections to ensure the safety of both the charger and your batteries.
Use Cases
The Efest Slim K4 USB-C Charger is designed for various charging needs:
- Multi-Battery Charging: With its 4-bay design, this charger allows you to charge four batteries at once, making it perfect for vapers using mods that require multiple batteries or for those who need to charge batteries for other devices like flashlights and cameras.
- Portable & Convenient: The Slim K4’s compact design and USB-C interface make it easy to carry and charge batteries anywhere, whether you’re at home, at work, or travelling.
- Safe & Efficient Charging: The intelligent chip inside the charger automatically detects the battery type and adjusts the current accordingly, ensuring your batteries are charged safely and quickly.
The Slim K4 is ideal for vapers who use multiple battery mods, ensuring that you always have charged batteries on hand for uninterrupted vaping.
Compatible Batteries
The Efest Slim K4 USB-C Charger is compatible with a wide range of lithium-ion batteries, making it a versatile charging solution:
- 18650 Batteries: Commonly used in vape mods, this charger is perfect for charging high-capacity 18650 batteries.
- 20700 & 21700 Batteries: Compatible with larger batteries often used in more powerful devices, ensuring flexibility for vapers with different setups.
- Other Lithium-Ion Batteries: The Slim K4 is compatible with a range of lithium-ion batteries, including 14500, 18350, and 26650, making it suitable for other devices like flashlights, cameras, and power tools.
What’s in the Box?
When you purchase the Efest Slim K4 USB-C Charger, you’ll receive:
- 1 x Efest Slim K4 Charger
- 1 x USB-C Charging Cable
- 1 x User Manual
This package includes everything you need to start charging your batteries right out of the box, offering a convenient and reliable solution for your power needs.
User Instructions:
Using the Efest Slim K4 USB-C Charger is simple and intuitive:
- Connect the Charger: Plug the USB-C cable into the charger and connect it to a power source, such as a USB wall adapter or your computer.
- Insert Batteries: Place up to four compatible batteries into the charger. The intelligent charging system will automatically detect the battery type and adjust the current accordingly.
- Monitor Charging: The LED indicators will show the charging status for each battery, letting you know when each one is fully charged.
- Remove Batteries: Once the batteries are fully charged, remove them from the charger and store them properly for future use.
Safety Information:
- Ensure that the charger is used with compatible lithium-ion batteries only.
- Do not expose the charger to extreme heat or moisture.
- Use only the included USB-C cable or a high-quality replacement to ensure safe charging.
- Do not leave batteries in the charger once they are fully charged to prevent overcharging, even though the charger is equipped with overcharge protection.
Comparison Section
If you’re considering other battery chargers, here are a few alternatives to the Efest Slim K4 USB-C Charger:
- Golisi S4 2.0A Smart Charger – A more advanced charger with LCD displays and faster charging capabilities, suitable for those looking for detailed charging information and speed.
- Nitecore i4 Intellicharger – Known for its versatility and smart charging technology, this charger offers compatibility with a wider range of battery types and chemistries.
- Xtar VC4S Charger – A fast and intelligent charger with advanced display features, perfect for users who need detailed feedback on their battery’s charge state.
Related Products
Pair your Efest Slim K4 Charger with these related products:
- Golisi G30 18650 Batteries – High-capacity, durable batteries that are perfect for high-wattage vape mods.
- Zap! Nicotine Shots – Add these nicotine shots to your shortfill e-liquids for a tailored nicotine strength.
- Innokin MVP5 Mod – A powerful mod that pairs well with the Slim K4, offering long-lasting battery life for extended vaping sessions.
Frequently Asked Questions
Can I charge different battery sizes at the same time?
- Yes, the Efest Slim K4 USB-C Charger is designed to charge multiple battery sizes simultaneously. It will automatically detect the type of each battery and adjust the charging current accordingly.
How long does it take to fully charge 18650 batteries?
- Charging time depends on the battery’s capacity and the current output. On average, 18650 batteries take about 3-4 hours to fully charge.
Is the Efest Slim K4 USB-C Charger safe to leave unattended?
- The Slim K4 charger is equipped with multiple safety protections, including overcharge and short-circuit protection. However, it is always recommended to remove batteries once they are fully charged.
Can I use the charger with non-lithium batteries?
- No, the Efest Slim K4 is specifically designed for lithium-ion batteries and should not be used with other types of batteries.
