Airline-Safe Power Banks
Learn how to choose an airline-safe power bank with our expert guide on watt-hour limits, labeling, safety features, and compliance tips.
Doublepow Battery UK41 Smart USB Charger for 3.7V Lithium-Ion Batteries: 4 Slots
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.
Features
- Double 18650 Compatibility
- USB Charging
- Smart Charging Technology
- 4 Slots
General specs
- Brand: Doublepow Battery
- Model: UK41
- Seller: Joom
- ID: 67a9734931e9ae012c467ddd
- 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.
View on seller's site
#publicidad
$8.67
Last price update: 5/23/25
Out of stock
Shipping options
Delivery to 
Russia
Russia
Available
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Doublepow Battery UK41 4 Slots
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| Brand | Doublepow Battery | PALO | CUCU | NATAWA | PALO | RW-electronic |
| Model | UK41 | |||||
| Color |
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| Price | $8.67 | $23.19 | $28.37 | $6.58 | $23.92 | $7.89 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | Jun 2, 2025 | Feb 5, 2026 | Feb 5, 2026 | Feb 6, 2026 | Jan 7, 2026 | Feb 5, 2026 |
| Compatible Battery Types | 14500, 18650, 26650 | 18650, 26650, 16340 | 18650, 14500 | 18650, 16650, 21700, 26650 | ||
| Display | LCD | LCD | Smart LCD | |||
Doublepow Battery UK41 4 Slots
$8.67
When this device makes sense
Reviews
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Lucía Becker
May 25, 2025
Jewel
May 25, 2025
Henry Thompson
May 24, 2025