Doublepow Battery UK11 Dual Slot USB Charger for Lithium Batteries: Dual slot charging
Available Options
Meet the Smart Dual Slot USB Charger—your go-to gadget for juicing up two 18650 or 21700 lithium batteries at the same time without breaking a sweat. Thanks to its USB power input, you can plug it into just about anything (yes, even that ancient laptop you refuse to part with) to keep your batteries charged and ready for action. It’s smart, too, with a voltage output that dances between 3.7V and 4.2V, making it a perfect match for a variety of lithium batteries. Plus, it’s so compact and light, you’ll forget it’s in your bag until you need it—whether you’re at home or on the move.
Here’s the lowdown on what makes it tick:
- Double the fun—charge two batteries at once, because who has time to wait?
- USB powered means you’re not tied down to one power source. Freedom!
- LED indicators keep you in the loop, so you’re not left guessing if it’s done.
- And, because we care, it’s got your back with protection against overcharging and those pesky short circuits.
- USB powered
- Compatible with 18650/21700 batteries
- 3.7V/4.2V output
- Compact design
- Dual slot charging
General specs
- Brand: Doublepow Battery
- Model: UK11
- Seller: Joom
- Compatibility: 18650, 21700
- Input: USB
- Output Voltage: 3.7V, 4.2V
- Charging Slots: 2
- 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
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Doublepow Battery UK11 Dual slot charging
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2-Slot USB QC3.0 Charger Quick Charge 3.0 technology
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| Brand | Doublepow Battery | OutsideWorld | NATAWA | greenyard | OutsideWorld | AI Supermarket |
| Model | UK11 | |||||
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| Price | $8.39 | $41.33 | $6.19 | $11.53 | $39.05 | $7.08 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | June 20, 2025 | August 29, 2025 | August 31, 2025 | August 16, 2025 | August 29, 2025 | August 22, 2025 |
| Compatible Battery Types | 18650, 26650, 18350, 17670, 17500, 16340, 14500, AA | 18650, 14500 | 18650 lithium batteries, NI-MH AA/AAA batteries | 18650, 26650, 18350, 17670, 17500, 16340, 14500, AA | ||
| Charging Technology | Quick Charge 3.0 | Smart charging | Smart charging with auto-detection | |||
Dual Slot USB Charger for Lithium Batteries
Reviews
Kitty
May 25, 2025
Dolly
May 24, 2025
Harper Lewis
May 24, 2025