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Efest K2 Slim Li-ion USB Charger

Efest K2 Slim Li-ion USB Charger




Efest Slim K2 Charger with USB
Efest brings another professional, two-slot Li-ion battery charger to the table, the Slim K2. With a fast charging mode i.e. 1.0A (4.2V 2pcs x 1.0A) and Micro-USB charging port, the device supports 30.6V or 3.7V lithium batteries. The Slim K2 by Efest offers multiple protection systems like over-charging protection, short-circuit protection, auto activation and auto detect charging function and much more.

The K2 Slim Charger is integrated with a smooth sliding action mechanism that helps in the installation and removal of batteries from the charger. The slider is smooth owing to the usage of piano wire and hard chromium is used to ensure precise charging. The device integrates steel cathode with low resistance with further helps in smooth charge flow.

The Efest Slim K2 also incorporates an LED indicator to monitor each connected battery individually.


Efest Slim K2 Battery Charger
USB Cable
Warranty Card
User Manual

Specifications and Features:
 2 Bay Compact USB Charger
 Single charging speed - 1A x 2
 LED charging indicator
 Input: DC 5V 2A
 Standby Current: <20mA
 Activation Current: 50mA - 100mA
 1.0A CC Current: 1000mA ± 10%
 Auto Recharge Voltage: 4.10V ± 0.10V
 Auto Cutoff Voltage: 4.20V ± 0.05V
 CV Cutoff Current: <100mA
 Operation Temperature: 0°C ~ 40°C
 Fast Charging Mode: 1.0A
 Auto Detect Charging Function
 Low Voltage Activation Function
 Short Circuit Protection
 Reverse Polarity Protection
 Over Charging Protection
 Piano Wire Spring Provides Smooth Sliding Action - 15,000+ Tensile Test
 Chromium Plated Steel Cathode Insures Low Resistance While Achieving A More Precise
Charging Voltage
 3.6V or 3.7V Cylindrical Lithium Ion Battery
 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 25500,

Note: Temperature control requires the use of nickel, titanium, or stainless steel coils.

Warning: Please make sure you have a great understanding and technical knowledge on how to use mods and batteries that can handle Sub-Ohm coils. Do not use short or flat 510 connection on any hybrid or hybrid style device. If you are not familiar or unsure of particular products or set-ups, please do not use it. Always use proper precautions and handling.

Note: There is always an inherent risk when using any rechargeable batteries at anytime and under any circumstances. Hookahtown.com and any of their parent and subsidiary companies are not held responsible for any damage for any modification of the batteries, chargers, devices and other products that we carry in any form or shape, this is including pack making.

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.

Hookahtown.com and any or all of Hookahtown.com’s parent and subsidiary companies will not be held responsible or liable for any injury, damage, or defect, permanent or temporary that may be caused by the improper use of a Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable battery/batteries as well as chargers. Please have a greater understanding of the batteries/chargers you are using and how to care for them properly.

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.

This product was added to our catalog on Tuesday 15 December, 2020.