Smarter than future C18 8-Element Battery Case 18650 DIY Power Bank Shell Kit: No welding required
Available Options
Ever found yourself staring at your dead phone, wishing you had a power bank? Well, the 8-Element Battery Case 18650 DIY Power Bank Shell Kit is here to save the day (and your battery life). This isn't just any power bank kit—it's the upgraded C18 version, packing a whopping 20000mAh capacity. That's enough juice to keep your gadgets running longer than your last Netflix binge.
What's cool about this kit? For starters, you don't need to be a soldering wizard to put it together. That's right, no welding required, making it a dream for DIY newbies and pros alike. And because we know you're always on the move, it's designed to be as compact and portable as your favorite pair of sneakers. Oh, and it plays nice with 18650 batteries, so you're all set.
Whether you're camping in the wilderness or just camping out at your local coffee shop, this kit is your ticket to never running out of power. It's not just a tech accessory; it's your lifeline.
- 20000mAh capacity
- Upgraded C18 version
- DIY assembly
- Portable design
- No welding required
General specs
- Brand: Smarter than future
- Model: C18
- Seller: Joom
- Capacity: 20000mAh
- Battery Type: 18650
- Assembly: No welding required
- First listed by seller: 6/9/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
Russia
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Smarter than future C18 Black No welding required
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FOSSiBOT F3600 Pro + 2 FB3840 Extends battery capacity to 11520Wh
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DEWALT DEWALT 10,000mAh Powerbank - Portable Battery Charger, Slim Design, Fast Charging, USB-C
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FOSSiBOT F3600 Pro Extends battery capacity to 11520Wh
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Smart Battery Power Bank Quick-release battery connector
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FOSSiBOT F3600 Pro + FB3840 Extendable battery capacity to 11520Wh
|
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| Brand | Smarter than future | FOSSiBOT | DEWALT | FOSSiBOT | Fishine | FOSSiBOT |
| Model | C18 | F3600 Pro + 2 FB3840 | DEWALT 10,000mAh Powerbank - Portable Battery Charger, Slim Design, Fast Charging, USB-C | F3600 Pro | F3600 Pro + FB3840 | |
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| Rating |
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| Price | $15.41 | $5,642.70 | $49.99 | $6,288.49 | $102.13 | $3,879.43 |
| Seller | Joom | Geekmaxi | Amazon | Geekmaxi | Joom | Geekmaxi |
| Update | August 16, 2025 | August 27, 2025 | June 27, 2025 | August 27, 2025 | August 30, 2025 | August 31, 2025 |
| Battery Type | 18650 | EV-grade LiFePO4 | EV-grade LiFePO4 | Rechargeable | EV-grade LiFePO4 | |
| Battery Capacity | 11520Wh | 11520Wh | 3840Wh, Extendable to 11520Wh | |||
| AC Output | 3600W | 3600W | 3600W | |||
| Output Ports | 13 | 13 | 13 | |||
| Charging Speeds | 5 | 5 | 5 | |||
| Full Charge Time | 1.5h | 1.5h | 1.5h | |||
| UPS | 2500W | 2500W | 2500W | |||
| Safety Features | BMS | BMS | BMS | |||
8-Element Battery Case 18650 DIY Power Bank Shell Kit
Adam J.
Atlanta, GA
June 14, 2025
I was always running out of battery on my phone during long days out, especially when I'm helping with family stuff or working on DIY repairs around the house. It was frustrating to be stuck without power. Then I found this kit, and it solved that problem perfectly. Putting it together was straightforward—no complicated steps, just slotting things in, and it felt like a solid workhorse once done. I've used it a few times now, and it's been reliable, keeping my gadgets going when I need them most. The takeaway is that it's a practical and affordable solution for anyone who likes to tinker and needs a portable power boost :)
- Pros: This kit is super easy to put together without any special tools, which was a huge relief for someone like me who enjoys DIY projects but isn't an expert. It holds a lot of power, letting me charge my devices multiple times on a single build, and it's compact enough to carry around easily, fitting in my bag without any hassle.
- Cons: As it seemed to me, the case feels a bit flimsy in places, and I had to be careful not to drop it. Also, it only works with specific types of batteries, so I had to make sure I had the right ones on hand before starting, which added a bit of extra planning.