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Efest Slim K4 USB-C Charger (4-Bay)

Efest Slim K4 USB-C Charger (4-Bay)

Vendor: Efest


Low stock

Regular price $15.74
Regular price Sale price $15.74
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SLIM K4 Charger is a intelligent charger that with a Type-C USB charging port. It is compatible with Lithium IMR 3.6V/3.7V batteries: 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 26500, 26650, 20700, 21700. LED indicator will show you the status of charger: indicator turns blue in standby mode/full charged, white color in charging. SLIM K4 Charger is designed with some smart functions, such as auto-detect charging, monitors and charges each slot independently, low voltage smart activation recovery function, 0V activation recovery function. Besides, it is safe for you to use with built-in intelligent protection chip.

Quick Links:

Efest LUC V4 Smart Charger
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  •  LED indicator description
  •  Auto-detect charging
  •  Safe charging mode: CC & CV
  •  Safe and convenient USB charger (5V 2A)
  •  Monitors and charges each slot independently
  •  Low voltage smart activation recovery function
  •  Incredibly lightweight and conveniently portable
  •  Type-C USB charging port design
  •  Built-in intelligent protection chip
  •  0V activation recovery function
  •  High quality ABS fire-retardant material & electronic component
  •  Safety protections: Short Circuit/Automatic Over-charging/Automatic Over-discharging/Reverse Polarity/0V Activation Recovery/Hardware and Software Double Protection


  •  Efest SLIM K4 Charger
  •  Manual Card

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. No disposables will be acceptable for return, or refunded for any reason. If the return is a result of our error (you received an incorrect or defective item, etc.) We will pay the return shipping costs.

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.