Efest | Slim K4 USB-C Charger

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  • Regular price $24.99


Discover the Efest SLIM K4 USB-C Charger, a 4-bay intelligent charger with Type-C powering, accepting a myriad of battery sizes with rapid charge function. Constructed from flame retardant ABS materials, the SLIM K4 USB-C Charger allows for rapid and safe charging thanks to the Type-C Port at the back, providing up to 2000mAh when used with 2 bays, relegating 1000mAh for each bay. When all four bays are used, charging is reduced to 500mAh per slot. Certified by FCC, RoHS, and CE, the Efest SLIM K4 is loaded with safeties and protections that will keep the charger, installed batteries, and user safe from failure.

Efest SLIM K4 USB-C Charger Features:
Flame Retardant ABS Material
Intelligent Protection Chipset
4-Bay Charging Ports
LED Charging Indicator Lights
Made from Fire Retardant PC Material
Piano Wire Spring - Tensile Test
Spring-Loaded Sliding Battery Charging Platform
Auto-Detect Charging Function
Standard Mode: 1000mA*1 MAX
Input: DC 5V/1A
Activation Recovery Function
Stops Charging Automatically
Low Voltage Smart Activation Recovery Function
0V Activation Recovery Function
Short Circuit Protection
Over-Charging Protection
Over-Discharging Protection
Reverse Polarity Protection
0V Activation Recovery Function
Hardware & Software Double Protection
Type-C Port
Compatible with 10440, 14500, 16340, 17340, 18350, 18500, 18650, 26500, 26650, 20700, 21700
Certified by FCC, RoHS, CE

Includes:
1 EFEST SLIM K4 Charger
1 User Manual

To ensure your safety and maintain the battery’s life and durability, we recommend you follow these rules:

Do not over-discharge or overcharge the battery. Doing so will shorten the battery’s life and sometimes, it can make it pop or leak.
Please do not short circuit or it will release massive current.
Do not play with fire! Do not dispose any kind of battery in or near any fire.
Do not stack more than one battery as it may potentially blowout and cause serious damage to yourself and place.
Always check battery’s condition to see if there are signs of wear and tear. If there is, please dispose the battery.
Do not dispose batteries into the trash as it is against the state’s laws


When working with Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable cells, please be cautious and carefully use as they are very sensitive to charging characteristics and may explode or burn if mishandled. Please make sure that you have great knowledge on all rechargeable batteries before you use them. Always charge batteries at the clean and fire-proof surface. Never leave charging batteries unattended. If you see that there are visible damages on the batteries, please do not use. Always keep, store and transport the rechargeable cells in a safe, non-conductive container in controlled environment.

Do not use any rechargeable battery as well as any battery charger if any visible damage is present, as well as if the cell or charger has been stressed through mishandling, accidental or otherwise, even if damage may not be visible. Always store and transport rechargeable cells in a safe, non-conductive container in a controlled environment. Please dispose battery cells, chargers or any other electronic devices in accordance of local laws and mandates.