Doublepow Battery UK41 Smart USB Charger for 3.7V Lithium-Ion Batteries: 4 Slots
Available Options
Meet the Smart USB Charger—your go-to gadget for juicing up 3.7V Lithium-Ion batteries (yeah, including those 18650 ones) without breaking a sweat. Got four batteries? No problem. This little powerhouse can charge them all at once, because who has time to wait? Thanks to its smart charging technology, it’s like having a mini battery butler that tweaks the current just right and says 'nope' to overcharging, keeping your batteries happy and healthy. Whether you’re a gadget guru or just someone who hates running out of juice, this compact charger is a game-changer. Plus, it plays nice with a ton of devices, making it the Swiss Army knife of chargers. Essential? You bet.
- Double 18650 Compatibility
- USB Charging
- Smart Charging Technology
- 4 Slots
General specs
- Brand: Doublepow Battery
- Model: UK41
- Seller: Joom
- Compatibility: 3.7V Lithium-Ion Batteries, 18650
- Charging Slots: 4
- Charging Technology: Smart Charging
- Input: USB
- First listed by seller: 5/23/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Doublepow Battery UK41 4 Slots
|
Smart Charger for Lithium-Ion Batteries 4 USB charging slots
|
2-Slot USB QC3.0 Charger Quick Charge 3.0 technology
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Smart Charger Adapter for Lithium-Ion Batteries Single slot design
|
Dual Slot Smart Battery Charger USB QC3.0 fast charging output
|
USB Smart LCD Display Lithium Battery Charger 4-slot charging
|
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| Brand | Doublepow Battery | Sunnyway | OutsideWorld | NATAWA | OutsideWorld | CUCU |
| Model | UK41 | |||||
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| Price | $8.04 | $11.17 | $41.33 | $6.19 | $39.05 | $25.82 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | June 2, 2025 | August 8, 2025 | August 29, 2025 | August 31, 2025 | August 29, 2025 | August 8, 2025 |
| Charging Technology | Smart Charging | Smart charging | Quick Charge 3.0 | Smart charging | Smart charging with auto-detection | |
| Compatible Battery Types | 18650, 26650, 18350, 17670, 17500, 16340, 14500, AA | 18650, 14500 | 18650, 26650, 18350, 17670, 17500, 16340, 14500, AA | 18650, 26650, 16340 | ||
Smart USB Charger for 3.7V Lithium-Ion Batteries
Reviews
Lucía Becker
May 25, 2025
Jewel
May 25, 2025
Henry Thompson
May 24, 2025