RW-electronic Universal USB Smart Charger: Universal compatibility with 18650/16650/21700/26650 batteries
Available Options
Meet the Universal USB Smart Charger—your new best friend for keeping all those lithium batteries (you know, the 18650, 16650, and even the big guys like 21700 and 26650) juiced up and ready to go. It's not just smart; it's practically genius, with tech that safely charges them up to 4.2V without breaking a sweat. And here's the kicker: it's also a flashlight (because why not?) and a Power Bank for those 'my phone's about to die' emergencies. Whether you're a battery guru or just someone who hates being left in the dark (literally), this little powerhouse is a game-changer.
- Built-in flashlight
- Power Bank functionality
- Smart charging technology
- Compact and portable design
- Universal compatibility with 18650/16650/21700/26650 batteries
General specs
- Brand: RW-electronic
- Seller: Joom
- Compatible Battery Types: 18650, 16650, 21700, 26650
- Charging Voltage: 3.7V-4.2V
- Functionality: Charging, Flashlight, Power Bank
- 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 | |||||
|---|---|---|---|---|---|---|
Universal USB Smart Charger Black
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Smart USB Charger for Lithium Batteries Multi-slot charging
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Universal Charger with LED Indicator Cable Smart fast charging
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Smart 18650 Lithium Battery Charger Universal USB charging
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Smart 18650 Lithium Battery Charger Universal USB charging
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Smart 18650 Lithium Battery Charger Universal USB charging
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| Brand | RW-electronic | AI Supermarket | LIAESMART | Gardenny | EmilyWoo | EmilyWoo |
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| Price | $6.79 | $7.07 | $15.33 | $6.75 | $6.67 | $6.32 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 8, 2025 | August 22, 2025 | August 23, 2025 | September 2, 2025 | September 2, 2025 | September 2, 2025 |
| Compatibility | 18650 lithium batteries | 18650 lithium-ion batteries | 18650 lithium-ion batteries | 18650 lithium-ion batteries | ||
Universal USB Smart Charger
Sarah W.
Victoria, BC
June 5, 2025
I was pretty skeptical at first—another gadget claiming to do it all? But the reality is, this thing actually works well. It charges my batteries without any issues, and the added flashlight and power bank features are a nice bonus. As a perfectionist, I appreciate how it handles different types smoothly, though I wish it were a bit sturdier. For my photo and video hobbies, it's been a reliable tool to keep things powered up on the go.
- Pros: It's super convenient that it can charge all my different battery sizes safely, and I love that it doubles as a flashlight and a backup power source for my phone—really handy for emergencies.
- Cons: The build feels a bit flimsy, and it seems to take longer to charge than I expected, which can be annoying when I'm in a hurry.