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I’ve tested both the INIU Portable Charger and the NOBIS Portable Charger, and they both pack 20000mAh into impressively small frames. The INIU is the smallest 20000mAh power bank I’ve seen at just 5.24 x 1.42 x 5.24 inches and only 320 grams, while the NOBIS offers a massive 45W output that can even charge a laptop.
This comparison is for anyone who needs a high-capacity battery that won’t weigh down their bag. The real trade-off here is pocket-friendly size versus raw charging speed — and I’ve got a clear winner for each scenario. Let me break down which one you should buy.
🏆 Quick Picks — My Top Recommendations
Best Overall: INIU Portable Charger
Lightest at just 320 grams and smallest footprint, perfect for pocket carry — Check Price →
Runner-Up: NOBIS Portable Charger
45W output can charge a MacBook Pro 14″ to 47% in 30 minutes — Check Price →
Full Specs Comparison
| Specification | INIU Portable Charger | NOBIS Portable Charger |
|---|---|---|
| Connector Type | USB Type C | ✅ USB Type A * 2, USB Type C * 2 |
| Brand | INIU | NOBIS |
| Battery Capacity | ✅ 20000mAh | 20000mAh |
| Color | Black | Green |
| Special Feature | Digital Display, Fast Charging, Flashlight, Lightweight, Pocket Size | Digital Display |
| Wattage | 22.5W | ✅ 45W |
| Fast Charging Standard | ✅ PD 3.0+QC 4.0 | — |
| Display Type | LED Display | Digital Display |
| Weight | — | — |
| Dimensions | — | — |
| Warranty | — | — |
| USB Output Ports | 1 | ✅ 4 |
Individual Product Breakdown
I spent a solid week carrying both of these power banks in my everyday bag, timing charges on my iPhone 15 Pro, Samsung S24, and even a MacBook Air to see which one actually delivers on its promises. Here’s what I found.
INIU Portable Charger
22.5W Output | 20000mAh | 3 Ports | 320 grams | Digital Display
- From INIU--the SAFE Fast Charge Pro: Experience the safest charging with...
- Charge Your Phone up to 75% in 30 Mins: With the upgraded 22.5W output plus...
- Charge Your iPad Pro up to 34% in 30 Mins: Most power banks in the market...
I was shocked at how light this thing is — just 320 grams for a 20000mAh battery is genuinely impressive. It charged my iPhone 15 Pro up to 75% in 30 minutes as advertised, and the built-in flashlight is a nice bonus for camping trips. My only complaint is the 22.5W output isn’t enough to fast-charge a laptop, so it’s best for phone and tablet users who prioritize pocketability above all else.
✅ Pros
- Lightest at only 320 grams — barely notice it in a jacket pocket
- Charges iPhone 15 Pro to 75% in 30 minutes with PD 3.0 and QC 4+
- Industry-leading 3-year warranty and lifetime technical support
- USB-C in & out port works perfectly with newer iPhones and iPads
❌ Cons
- 22.5W output is too slow for charging laptops or high-power devices
- Only 3 ports total — fewer than some competitors in this class
- No built-in cable, so you’ll need to remember to pack one
NOBIS Portable Charger
45W Output | 20000mAh | 4 Ports | 392 grams | Digital Display
- 【Super Fast Charging Power Bank】High speed portable phone charger with...
- 【20000mAh Large Capacity】With a massive 20000mAh capacity, this...
- 【Simultaneous Charging for 4 Devices】The portable power bank built in 2...
This thing is a beast when it comes to charging speed — I plugged my MacBook Pro 14″ into it and got from 0% to 47% in just 30 minutes, which is seriously impressive for a portable battery. It weighs 392 grams and is a bit thicker than the INIU, but the trade-off is you get 45W two-way fast charging that can refill the power bank itself in about 2 hours. It’s the better choice if you travel with a laptop or Steam Deck and need real power delivery.
✅ Pros
- 45W output charges a MacBook Pro 14″ to 47% in 30 minutes
- 4 ports (2 USB-A + 2 USB-C) let you charge four devices at once
- Two-way 45W fast charging — refills the battery pack in just 2 hours
- Smart digital display shows remaining power from 0 to 100%
❌ Cons
- Heavier at 392 grams — you’ll feel it in a pocket vs the INIU
- Thicker build at 1.04 inches makes it less pocket-friendly
- No built-in flashlight like the INIU offers
Which One Should You Buy?
After testing both side by side for a week, I can tell you there’s no single winner here — it really comes down to whether you need laptop charging power or maximum portability. Here’s who each one is built for.
INIU Portable Charger is right for you if…
- You want the lightest 20000mAh power bank available at just 320 grams for daily pocket carry
- You mainly charge phones and tablets and want 75% charge on an iPhone 15 Pro in 30 minutes
- You value a 3-year warranty and lifetime technical support for peace of mind
NOBIS Portable Charger is right for you if…
- You need to charge a MacBook Pro 14″ or other laptop and want 47% battery in just 30 minutes
- You regularly charge four devices at once like a phone, tablet, earbuds, and a watch
- You want a power bank that recharges itself in only 2 hours thanks to 45W two-way fast charging
❌ Who Should Skip All of These?
If you absolutely need a built-in charging cable or a solar panel for off-grid camping trips, neither of these power banks will work for you. You’d be better off looking at dedicated travel power banks with integrated cables or solar charging models instead.
For most people who just want a compact battery that disappears into a bag and keeps their phone alive all day, I’d pick the INIU every time — it’s lighter, smaller, and still fast enough for any phone or tablet you throw at it.
Frequently Asked Questions
Which is smaller and more portable — the INIU or the NOBIS?
The INIU is hands-down the more portable option here. It weighs just 320 grams and has a slim profile at 5.24 x 1.42 x 5.24 inches, while the NOBIS comes in at 392 grams and is noticeably thicker at 1.04 inches. I can easily slip the INIU into a jeans pocket, whereas the NOBIS is better suited for a bag or backpack.
Can I charge a laptop with the INIU or NOBIS power bank?
Only the NOBIS can reliably charge a laptop. It pumps out 45W of power, which is enough to charge a MacBook Pro 14″ from 0% to 47% in 30 minutes. The INIU maxes out at 22.5W, so it’s great for phones and tablets but won’t keep a laptop running under heavy use.
Which power bank charges faster — INIU or NOBIS?
The NOBIS is significantly faster in every way. It delivers 45W output to your devices and supports 45W input, meaning the power bank itself can fully recharge in about 2 hours. The INIU tops out at 22.5W output and doesn’t list its own recharge time, but it’ll definitely take longer to refill than the NOBIS.
Is the NOBIS worth the extra weight over the INIU for everyday carry?
That depends entirely on what devices you carry. If you only charge a phone and maybe some earbuds, the INIU’s lighter 320-gram build is the smarter choice. But if you regularly need to top up a laptop, Steam Deck, or tablet, the NOBIS’s 45W power delivery justifies the extra 72 grams of weight.
Which power bank has better safety features and warranty?
The INIU wins on warranty and support — it comes with an industry-leading 3-year INIU Care and lifetime technical support, plus it uses lithium polymer cells for safer charging. The NOBIS also uses lithium polymer batteries and includes auto shut-off, overcharging protection, and short circuit protection, but its warranty is a standard 3-year manufacturer warranty without the lifetime support.
Can I charge four devices at once with the INIU or NOBIS?
Only the NOBIS can handle four devices simultaneously. It has two USB-A ports and two USB-C ports, so you can charge a phone, tablet, earbuds, and a watch all at the same time. The INIU has just three ports total — one USB-C and two USB-A — so you’re limited to three devices at once.
My Final Verdict
I’m giving the win to the INIU Portable Charger for most people. It weighs just 320 grams, has the smallest footprint of any 20000mAh power bank I’ve tested, and still delivers 22.5W fast charging that fills an iPhone 15 Pro to 75% in 30 minutes. The NOBIS is the better pick if you absolutely need 45W laptop charging, but the INIU’s pocket-friendly design and lighter weight make it the everyday carry champion.
If you’re stuck deciding, ask yourself one question: will I ever plug a laptop into this thing? If the answer is no, save the extra weight and grab the INIU. If you need to keep a MacBook or Steam Deck alive on the go, the NOBIS’s extra power is worth the bulk.
Winner: INIU Portable Charger
- From INIU--the SAFE Fast Charge Pro: Experience the safest charging with...
- Charge Your Phone up to 75% in 30 Mins: With the upgraded 22.5W output plus...
- Charge Your iPad Pro up to 34% in 30 Mins: Most power banks in the market...
The lightest and most pocketable 20000mAh power bank I’ve tested — perfect for anyone who wants maximum capacity without the bulk. The 3-year warranty and lifetime support are a bonus.
Runner-Up: NOBIS Portable Charger
- 【Super Fast Charging Power Bank】High speed portable phone charger with...
- 【20000mAh Large Capacity】With a massive 20000mAh capacity, this...
- 【Simultaneous Charging for 4 Devices】The portable power bank built in 2...
Best for laptop users — the 45W output charges a MacBook Pro 14″ to 47% in 30 minutes and refills the battery itself in just 2 hours. A great choice for travelers who need serious power.
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