Efest Slim K4 Charger

Description

EFEST Slim K4 Charger

Compatible with Lithium IMR 3.6V/3.7V Batteries: 10440 / 14500 / 16340 / 17340 / 18350 / 18490 / 18500 / 18650 / 26500 / 26650 / 20700 / 21700

Cost effective and easy to use, the Slim K4 charger comes with a user manual and packaging with instructions in 7 different languages. Incredibly lightweight and conveniently portable!

Specifications:

Input Power ------------ DC 5V 2A

2*1A CC current ------------ 2000mA±10%

1*1A CC current ------------ 1000mA±10%

4*0.5A / 3*0.5A CC current ------------ 500mA±10%

Auto cut-off voltage ------------ 4.20V±0.05V

CV cut-off current ------------ <100mA

Standby Current ------------ <20mA

Activation Current ------------ 50mA~100mA

Auto recharge voltage ------------ 4.10±0.10V

Operation Temperature ------------ 0°C~40°C

Storage Temperature ------------ -40°C±70°C

LED INDICATOR DESCRIPTION - After inserting the battery into the slot correctly, the Slim K4 will start charging the battery automatically within a few seconds. The LED indicator lights will show white while the battery is charging and change to blue once fully charged. 

HIGH QUALITY CRAFTSMANSHIP: Spring made by piano wire, it provides a smooth sliding action when installing and removing batteries. Steel cathode with low resistance and hard chromium plating processing to achieve a more precise charging voltage. 15,000 + times spring testing quality warranty.

USB PORT DESIGN - The Type-C USB port reduces the heat of the port effectively.

Efest Slim K4 Charger

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$19.99

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    Description

    EFEST Slim K4 Charger

    Compatible with Lithium IMR 3.6V/3.7V Batteries: 10440 / 14500 / 16340 / 17340 / 18350 / 18490 / 18500 / 18650 / 26500 / 26650 / 20700 / 21700

    Cost effective and easy to use, the Slim K4 charger comes with a user manual and packaging with instructions in 7 different languages. Incredibly lightweight and conveniently portable!

    Specifications:

    Input Power ------------ DC 5V 2A

    2*1A CC current ------------ 2000mA±10%

    1*1A CC current ------------ 1000mA±10%

    4*0.5A / 3*0.5A CC current ------------ 500mA±10%

    Auto cut-off voltage ------------ 4.20V±0.05V

    CV cut-off current ------------ <100mA

    Standby Current ------------ <20mA

    Activation Current ------------ 50mA~100mA

    Auto recharge voltage ------------ 4.10±0.10V

    Operation Temperature ------------ 0°C~40°C

    Storage Temperature ------------ -40°C±70°C

    LED INDICATOR DESCRIPTION - After inserting the battery into the slot correctly, the Slim K4 will start charging the battery automatically within a few seconds. The LED indicator lights will show white while the battery is charging and change to blue once fully charged. 

    HIGH QUALITY CRAFTSMANSHIP: Spring made by piano wire, it provides a smooth sliding action when installing and removing batteries. Steel cathode with low resistance and hard chromium plating processing to achieve a more precise charging voltage. 15,000 + times spring testing quality warranty.

    USB PORT DESIGN - The Type-C USB port reduces the heat of the port effectively.

    FAQs

    Can I Return Products?

    For safety reasons,used or opened vapes cannot be returned. If your device arrives defective, contact us within a few days of delivery and we’ll assist with troubleshooting or replacement.

    How Long Does Shipping Take?

    Orders typically ship within 1–2 business days, with delivery in 3–7 business days depending on your location. 

    What can I do if my item (or part of it) is damaged?

    If your product arrives defectic or damaged reach out to us as soon as you can so we can replace it if needed.

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