For travel, office or at home, equipped with a current and future-oriented robust USB-C input makes the Slim K4 an all-rounder. Light weight, compact size and flexible USB-C connectivity make the charger an ideal travel companion.
The Efest Slim K4 is a compact, easy-to-use 4-bay charger.
For Li-Ion batteries (IMR, INR, ICR, 3.6/3.7V nominal) up to 4.2V. It is supplied with power via USB-C (USB power plug optionally available, recommended 2A or more). With a charging current of 1A for 1 – 2 batteries or 0.5A for 3 – 4 batteries, it is primarily suitable for the safe and convenient charging of Li-Ion batteries.
The following Li-Ion battery types can be charged with the Efest SLIM K4:
Li-Ion (3.6/3.7V nominal) up to 4.2V in the sizes: 16340, 18350, 18490, 18500, 18650, 18700, 20700, 21700 as well as two each of 25500, 26650
20700 and 21700 batteries also with protection electronics up to 77mm length.
Efest Slim K4 Product information:
- 4 separate charging bays, individually monitored.
- 4 different batteries can be charged simultaneously.
- USB-C input.
- Charging current 1*1A / 2*1A / 3*0.5A / 4*0.5A CC
- LED status display.
- CC/CV charging programme for Li-ion batteries.
- Automatic charge stop when charging is complete.
- Reactivation of protected and deep discharged batteries.
- Safe: reverse polarity protection, overcharge protection, overload protection, short circuit protection.
- CE & RoHS certified..
Homepage of the manufacturer:www.efestpower.com
Scope of delivery: Charger, USB cable (USB-C to USB-A)
Technical Data
| Input | DC 5V 2.1A via MicroUSB |
| Charging current | 0.5A – 1A ± 10 % * 2 |
| Charging end voltage | 4.20V ± 0.05V |
| Quiescent current consumption | 20mA |
| Termination current | = 100mA |
| Reactivation | 50 – 100mA |
| Restart charge | = 4,10V |
| Operating temperature | 0 °C – 40 °C |
| Storage temperature | -40 °C – +70 °C |
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