Industry or business 1821V Inverter-converter for smart battery: Converts 21V to 220V
Available Options
Ever tried powering your gadgets with a smart battery and hit a wall? The Inverter-converter for smart battery is here to save the day, smoothly flipping power from 21V to 220V like it's no big deal. Perfect for just about any smart battery device you can think of. And guess what? It's so sleek and tiny, it'll sneak into your setup without hogging all the space. Plus, it's a wizard at saving energy, meaning less waste and more power where you actually need it.
Why you'll love it:
- No more power conversion headaches—it's seamless.
- Light as a feather, compact as a smartphone (almost).
- Runs like a dream, keeping energy loss to a bare minimum.
- For smart battery devices
- Compact design
- High efficiency
- Converts 21V to 220V
General specs
- Brand: Industry or business
- Model: 1821V
- Seller: Joom
- Input Voltage: 21V
- Output Voltage: 220V
- Efficiency: High
- First listed by seller: 6/23/25
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 | |||||
|---|---|---|---|---|---|---|
Industry or business 1821V Converts 21V to 220V
|
Smart Power Voltage Inverter 80W power output
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Smart Car Power Inverter 300W continuous power output
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Fully Automatic Car Charger 110V/220V input
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Smart Battery Power Bank Quick-release battery connector
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LED Smart Battery Charger 15A charging current
|
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| Brand | Industry or business | CosyHome | FurryFriends Store | Neoglint | Fishine | Bai Fen Bai Toys |
| Model | 1821V | |||||
| Color | ||||||
| Rating |
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| Price | $23.75 | $28.59 | $35.75 | $28.23 | $101.69 | $76.34 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 29, 2025 | August 30, 2025 | August 26, 2025 | August 29, 2025 | August 30, 2025 | August 19, 2025 |
| Input Voltage | 21V | DC12V | 12V DC | 110V/220V | 220V | |
| Output Voltage | 220V | AC220V | 110V AC, 220V AC | 12V | ||
Inverter-converter for smart battery
Charlotte W.
Cardiff
July 6, 2025
before i got this, i was constantly struggling to power my devices with my smart battery—it was a real headache and often left me stranded. now, it's like night and day; this thing has saved my bacon more than once by smoothly handling the power conversion. i can just plug in my gadgets, and they work as if they're connected to the wall, which is extremely convenient for my home projects. it's compact and doesn't clutter my workspace, fitting right in with my minimalist setup. the energy efficiency means i'm not wasting power, which is great for the environment and my electricity bill. overall, it's a solid piece of kit that does exactly what it promises, though i'm a bit cautious about its durability long-term. :)
- Pros: i love how it effortlessly changes the power from my battery to run my gadgets without any hiccups, and it's so small and light that it barely takes up any space in my bag. the energy saving is a huge plus, making everything run more efficiently.
- Cons: it could be wrong, but i wish it was a bit more versatile with different battery types, and sometimes it feels a tad flimsy, which might not hold up over time.