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Description
Efest SLIM K4 Battery ChargerSLIM 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
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 Battery Charger available to order Online from Vape Gate UAE with a unique Delivery service in UAE, Abu Dhabi, Dubai, Al Ain, Ras Al Khaimah, Ajman, Sharjah, Ruwais
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 Battery Charger Specification:
| 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 Battery Charger Features:
Efest SLIM K4 Battery Charger Includes:
- Efest Slim K4 Battery Charger
- USB Cable
- User Manual
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
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Product Reviews
★★★★★ 5
Paper Towel Holder Great Quality and nice looking!
Color: Brushed Nickel, Material Type: Stainless Steel
Great Quality. Sturdy and nice looking.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Should have got this ages ago!
Color: Gold, Material Type: Stainless Steel
Heavy enough to stay in place, but light enough to pick up and carry to the cleanup site.
Very simple, but elegantly fashioned.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Great product, and looks great!
Color: Black, Material Type: Stainless Steel
Perfect and worth the price! Solid , sturdy and looks great! I recommend this product 100%.
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Reviewed in the United States on December 10, 2025
★★★★★ 5
Good solid weight. Nice appearance.
Color: Brushed Nickel, Material Type: Stainless Steel
Nice solid weight. Elegant. Even though I'm only using it in my craft/maker space. :)
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Love it
Color: Brushed Nickel, Material Type: Stainless Steel
Great quality works really well
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Reviewed in the United States on March 16, 2026