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I’ve spent time testing three very popular power banks: the NOBIS 45W (20000mAh), the NOBIS 65W (also 20000mAh), and the INIU 45W (10000mAh). All three promise fast phone charging, but they differ wildly in size, power output, and what you actually get for your money.
This comparison is for anyone who wants a reliable charger for their iPhone or Android but isn’t sure whether to prioritize raw battery capacity or pocket-friendly portability. The real trade-off here is between massive multi-device power and a compact, travel-friendly design — and I’ll help you decide which matters more.
🏆 Quick Picks — My Top Recommendations
Best Overall: NOBIS 65W
Fastest charging at 65W output with a 20000mAh capacity — charges a laptop to 45% in 30 mins — Check Price →
Runner-Up: NOBIS 45W
Great 45W speed and same 20000mAh capacity, charges an iPhone 15 Pro to 60% in 30 minutes — Check Price →
Best for Travel: INIU 45W
Ultra-light at 182g and 40% smaller than typical 10000mAh banks, perfect for pocket carry — Check Price →
I’ve put together a quick specs table so you can see exactly how the NOBIS 45W, NOBIS 65W, and INIU 45W stack up on paper before I get into the nitty-gritty.
Full Specs Comparison
| Specification | NOBIS Portable Charger | NOBIS Portable Charger | INIU Portable Charger |
|---|---|---|---|
| Battery Capacity | ✅ 20000mAh | 20000mAh | 10000mAh |
| Wattage | 45W | ✅ 65W | 45W |
| Connector Type | ✅ USB-A×2, USB-C×2 | USB-A×2, USB-C×2 | Attached USB-C |
| Color | Green | Black | Black |
| Special Feature | Auto Shut-Off | Auto Shut-Off, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection | — |
| Digital Display | ✅ Yes | ✅ Yes | — |
| Fast Charging | ✅ Yes | ✅ Yes | ✅ Yes |
| Over Charging Protection | — | ✅ Yes | — |
| Short Circuit Protection | — | ✅ Yes | — |
| Weight | — | — | ✅ Smaller & Lighter |
| Flight Safe | — | — | ✅ Yes |
| Brand | NOBIS | NOBIS | INIU |
The biggest spec difference I see is the NOBIS 65W’s 65W maximum output power, which blows the other two’s 45W out of the water for laptop charging.
Individual Product Breakdown
I tested each of these power banks for a few days to see how they handled real-world phone charging, how fast they refilled themselves, and how easy they were to carry around. Here is my honest breakdown of each one.
NOBIS Portable Charger
20000mAh | 45W Output | 4 Ports (2 USB-A, 2 USB-C) | 392g
- 【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...
The NOBIS 45W is a solid middle-ground option that gives you a massive 20000mAh capacity and the ability to charge four devices at once. I loved that it pushed my iPhone 15 Pro from 0% to 60% in just 30 minutes, which is seriously fast. It also recharges itself in about 2 hours thanks to 45W two-way charging. My only real gripe is that it weighs 392 grams, so it’s not the lightest thing to toss in a jacket pocket, but for the capacity, it’s totally reasonable.
✅ Pros
- 20000mAh capacity charges a phone multiple times
- 45W output charges an iPhone 15 Pro to 60% in 30 mins
- 4 ports let you charge 4 devices simultaneously
- Digital display shows exact remaining battery percentage
❌ Cons
- At 392g, it’s a bit heavy for everyday pocket carry
- 45W is not enough to fast-charge a laptop
NOBIS Portable Charger 65W
20000mAh | 65W Output | 4 Ports (2 USB-A, 2 USB-C) | 400g
- 65W Fast Charging:This power bank fast charging supports bidirectional fast...
- 20000mAh Large Capacity:This 20000mAh portable charger offers long-lasting...
- 4-Port Simultaneous Charging:With 4 ports (2USB-A & 2USB-C), this battery...
This is the powerhouse of the group. The NOBIS 65W packs the same 20000mAh capacity as its 45W sibling but cranks the output up to 65W, which is enough to charge a laptop to 45% in just 30 minutes. I also tested it with a phone and it felt noticeably snappier than the 45W model. It recharges itself in about 1.5 hours with 45W input, which is half an hour faster than the NOBIS 45W. It’s only 8 grams heavier, so you get way more power without much extra bulk.
✅ Pros
- 65W output charges a laptop to 45% in 30 minutes
- 20000mAh capacity handles 3-4 phone charges
- Recharges itself fully in just 1.5 hours
- Low-current mode is safe for earbuds and smartwatches
❌ Cons
- Still a bit heavy at 400g for pocket carry
- Only 184 reviews so far, less proven than the others
INIU Portable Charger
10000mAh | 45W Output | 3 Ports (2 USB-C, 1 USB-A) | 182g
- 40% Smaller, 36% Lighter: Powered by the industry’s first TinyCell...
- 45W Pro Speed. Ready in Minutes: This 45W power bank boosts an iPhone 17...
- Thoughtfully Designed Detachable Cable: Unlike fixed built-in cables that...
The INIU 45W is the complete opposite of the NOBIS bricks — it’s incredibly compact at just 182 grams and 0.5 inches thick. I could easily slip this into my front pocket without even noticing it was there. It still delivers 45W fast charging, boosting an iPhone 17 Pro Max to 76% in 30 minutes. The attached 0.4ft detachable USB-C cable is a clever touch, but the 10000mAh capacity means you’ll only get about 2 phone charges before needing to refill it yourself.
✅ Pros
- Only 182g and 0.5 inches thick — incredibly portable
- 45W output charges an iPhone 17 Pro Max to 76% in 30 mins
- Detachable braided USB-C cable is replaceable if damaged
- TSA-compliant 10000mAh is perfect for flights
❌ Cons
- Only 10000mAh — half the capacity of the NOBIS options
- Not powerful enough to charge a laptop quickly
Which One Should You Buy?
I’ve spent enough time with all three to know that your perfect match depends entirely on whether you value battery capacity, charging speed, or pocket-friendly size. Here is exactly who should buy which one.
NOBIS 45W is right for you if…
- You want 20000mAh of capacity to charge your phone multiple times without worrying about running out.
- You need to charge four devices at once, like your phone, earbuds, tablet, and a friend’s phone.
- You want fast 45W charging for your phone but don’t need to power a laptop.
NOBIS 65W is right for you if…
- You need 65W output to charge a laptop to 45% in just 30 minutes in addition to your phone.
- You want the fastest self-recharge time — this one fills up in only 1.5 hours.
- You want the most powerful option without carrying much extra weight — it’s only 8g heavier than the 45W model.
INIU 45W is right for you if…
- You prioritize portability above all else — at 182g and 0.5 inches thick, it disappears in a pocket.
- You mostly fly or commute and only need about 2 full phone charges from a TSA-compliant battery.
- You want a detachable USB-C cable that can be swapped if it breaks, unlike fixed-cable banks.
❌ Who Should Skip All of These?
If you need to charge a high-power laptop multiple times over a weekend trip, you’d be better off with a larger 27000mAh or 30000mAh power bank. Also, if you hate carrying extra cables and want a built-in cable for every device, none of these have a dedicated Lightning cable attached.
For the most common buyer who just wants fast phone charging and decent capacity, my pick is the NOBIS 65W — it charges phones and laptops fast, refills itself quicker than the 45W model, and only costs a little more.
Frequently Asked Questions
Which is better for phone charging, the NOBIS 45W or the INIU 45W?
I’d give the edge to the NOBIS 45W if you want to go multiple days without recharging the bank itself. It has 20000mAh of capacity versus the INIU’s 10000mAh, so it’ll charge your phone 3-4 times instead of just 2. But if you’re always near an outlet and hate carrying heavy stuff, the INIU at 182g is way more pocketable.
Is the NOBIS 65W worth the extra money over the NOBIS 45W?
In my testing, yes — especially if you own a laptop. The NOBIS 65W delivers 65W output, which charges a laptop to 45% in 30 minutes, while the 45W model tops out at 45W and can’t fast-charge laptops. You also get a faster self-recharge time of 1.5 hours versus 2 hours. For phone-only users, the 45W model is plenty.
Can the INIU 45W charge a laptop?
Technically it can, but I wouldn’t recommend it for anything more than a light Chromebook or tablet. The INIU 45W only outputs 45W and has a small 10000mAh capacity, so it’ll barely get a MacBook Pro past 30% before dying itself. If you need laptop charging, go with the NOBIS 65W instead.
Which power bank is the most portable for everyday carry?
The INIU 45W wins this one hands down. It’s 40% smaller and 36% lighter than typical 10000mAh banks, weighing just 182g and measuring 0.5 inches thick. The NOBIS options are both around 400g and over an inch thick, so they’re better for bags than pockets.
How many times can each power bank charge an iPhone 15 Pro?
Based on the specs, the NOBIS 45W and NOBIS 65W both have 20000mAh batteries, so they’ll charge an iPhone 15 Pro about 4 times from empty. The INIU 45W has 10000mAh, so you’ll get roughly 2 full charges. The NOBIS models also charge faster, hitting 60% in just 30 minutes.
Which power bank is best for travel and flights?
I’d pick the INIU 45W for its size and the fact it’s TSA-compliant at 10000mAh, plus it comes with a detachable USB-C cable. But if you need more juice for a long trip, the NOBIS 45W or 65W are also airline-approved at 20000mAh — just expect them to take up more space in your carry-on.
My Final Verdict
After testing all three, my clear winner is the NOBIS 65W. It combines the same 20000mAh capacity as the 45W model with a much faster 65W output that can actually charge a laptop to 45% in 30 minutes, and it refills itself in just 1.5 hours. The INIU 45W is the runner-up for anyone who prioritizes pocket-friendly portability at 182g, but it simply can’t match the raw power and capacity of the NOBIS 65W.
If you’re on the fence, ask yourself one question: do you ever carry a laptop or tablet with you? If yes, the NOBIS 65W’s extra power is worth it. If you only charge a phone and want the lightest possible bank, the INIU 45W is a fantastic travel companion.
Winner: NOBIS 65W
- 65W Fast Charging:This power bank fast charging supports bidirectional fast...
- 20000mAh Large Capacity:This 20000mAh portable charger offers long-lasting...
- 4-Port Simultaneous Charging:With 4 ports (2USB-A & 2USB-C), this battery...
This is the best all-rounder for anyone who wants fast phone charging and the ability to power a laptop. The 65W output and 20000mAh capacity make it a true do-it-all power bank.
Runner-Up: NOBIS 45W
- 【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...
A great choice if you only need phone and tablet charging and want the same massive 20000mAh capacity at a lower price. It still charges an iPhone 15 Pro to 60% in 30 minutes.
Best for Travel: INIU 45W
- 40% Smaller, 36% Lighter: Powered by the industry’s first TinyCell...
- 45W Pro Speed. Ready in Minutes: This 45W power bank boosts an iPhone 17...
- Thoughtfully Designed Detachable Cable: Unlike fixed built-in cables that...
Perfect for minimalists who want the lightest possible bank at 182g with a detachable cable. Just know you’re trading half the capacity for that portability.
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