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Attention:
Since the manufacturer requires the serial number for after-sales, we highly recommend you keep the original package box or take a photo of the code before discarding it. Thank you!
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.
Efest SLIM K4 Smart Charger Parameters:
| Brand | Efest | 
| Product Name | SLIM K4 Charger | 
| Compatible with | Lithium IMR 3.6V/3.7V batteries: 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 26500, 26650, 20700, 21700 | 
| 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 | 4.20±0.05V | 
| CV Cut-off Current | <100mA | 
| Standby Current | <20mA | 
| Activation Current | 50mA~100mA | 
| Auto Recharge Voltage | 4.10±0.10V | 
| Operation Temperature | 0℃~40℃ | 
| Storage Temperature | ﹣40℃~+70℃ | 
| Auto-detect Charging Current | 2×1.0A/1×1.0A/4×0.5A/3×0.5A | 
Efest SLIM K4 Charger Details:









The package of SLIM K4 Charger Comes With:
1* Efest SLIM K4 Charger● Battery is not included.
● Keep the charger out of reach of children.
● Use the device at 0-40℃ temperature range.
● Battery using notice: Make sure to charge in or on a fire-proof surface. Don't leave charging batteries unattended. Please have the fundamental knowledge about the batteries you are using and how to make use of them correctly.
| Option Title | No | 
|---|
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