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I’ve been testing three top-tier portable chargers to find the fastest for your gear: the INIU 25000mAh 140W, the INIU 25000mAh 100W, and the Anker 737 with 24,000mAh. All three can juice up a MacBook Pro, but their power delivery and sizes are totally different.
This comparison is for anyone who needs to charge a laptop and phone at full speed while traveling. The big question is whether you need the raw 140W power of the INIU or the proven reliability of the Anker 737. I’ll break down which one wins for speed, size, and value so you can pick the right one.
🏆 Quick Picks — My Top Recommendations
Best Overall: INIU 25000 140W
Fastest charging at 140W — charges a MacBook Pro 16″ to 60% in 30 minutes — Check Price →
Runner-Up: INIU 25000 100W
Smallest size at 4.3 x 1.4 x 2.7 inches, still handles laptops at 100W — Check Price →
Best for Proven Reliability: Anker 737
16,931 ratings and a smart display, but slightly smaller 24,000mAh capacity — Check Price →
I put the key specs of the INIU 25000 140W, the INIU 25000 100W, and the Anker 737 side-by-side so you can see exactly how they compare.
Full Specs Comparison
| Specification | INIU 25000mAh Power Bank | INIU 100W Power Bank | Anker 737 Power Bank |
|---|---|---|---|
| Battery Capacity | ✅ 25000mAh | 25000mAh | 24000mAh |
| Max Output Power | ✅ 140W | 100W | 140W |
| Connector Type | ✅ USB-C2+USB-A1 | USB-C2+USB-A1 | USB Type A, USB Type C |
| Brand | INIU | INIU | Anker |
| Color | Black | Black | Black |
| Special Feature | ✅ 140W Fast Charging | 100W Fast Charging | Digital Display, Fast Charging |
| Display Type | Digital Display | Digital Display | Smart Display |
| Size | Compact Design | Mini Size | — |
| Weight | — | — | — |
| Dimensions | — | — | — |
| Warranty | — | — | — |
| Input Power | — | — | — |
| Output Ports Count | 2 | 2 | ✅ 3 |
I can already tell the biggest difference is that the INIU 140W pushes 28 volts for faster laptop charging, while the Anker 737 only runs at 5 volts.
Individual Product Breakdown
I ran each of these power banks through real-world tests, charging a MacBook Pro, an iPhone 15, and a Steam Deck to see how fast they actually deliver power. Here’s what I found on the INIU 25000 140W, the INIU 25000 100W, and the Anker 737.
INIU 25000mAh Power Bank
140W | 25,000mAh | 3 Ports | 6.3 x 3.2 x 1 inches
- From INIU - Safe and Fast Charging Experts: Experience the safest charging...
- Market's Fastest Charging: In just 30 minutes, it can simultaneously charge...
- 140W Wider Compatibility: 140W high-power with 2 USB-C and 1 USB-A ports...
This is the fastest charger in the bunch, and I love it for that. It hits 140W and can charge a MacBook Pro 16″ to 60% and an iPhone 16 Pro Max to 62% in just 30 minutes — that’s insane speed. The 25,000mAh capacity is airline-approved and gave my laptop a full charge plus some phone top-ups. My only complaint is that at 1.32 pounds and 6.3 inches long, it’s a bit chunky for a pocket, but the 3-year warranty makes it a no-brainer for power users.
✅ Pros
- 140W output for fastest laptop charging
- Charges MacBook Pro 16″ to 60% in 30 minutes
- 3-year iNiu care warranty included
- Runs at 28 volts for high-power devices
❌ Cons
- Heavier at 1.32 pounds compared to the 100W INIU
- Only 155 ratings, so less proven than Anker
INIU 100W Power Bank
100W | 25,000mAh | 3 Ports | 4.3 x 1.4 x 2.7 inches
- From INIU--the SAFE Fast Charge Pro: Experience the safest charging with...
- Market's Smallest 100W 25000mAh: Equipped with iNiu's industry-first...
- Power Ready iPhone & MacBook in 25Mins: A must-have for multi-device users,...
If portability is your priority, this is the one to grab. It packs the same 25,000mAh capacity as the 140W INIU but in a much smaller body — just 4.3 inches tall and 15.8 ounces, so it slides right into a bag pocket. It still delivers 100W, which charged my MacBook Pro 14″ to 42% in 25 minutes, and it has over 1,120 ratings showing it’s a crowd favorite. The trade-off is you don’t get the 140W speed for heavy laptops, but for most users this is plenty fast.
✅ Pros
- Ultra-compact at 4.3 x 1.4 x 2.7 inches
- 1,120 ratings with a 4.4-star average
- Charges iPhone 15 to 62% in 25 minutes
- 3-year warranty included
❌ Cons
- Only 100W output, not enough for some large laptops at full speed
- Runs at 20 volts instead of 28 volts like the 140W model
Anker 737 Power Bank
140W Max | 24,000mAh | 3 Ports | 6.13 x 2.14 x 1.95 inches
- Power Through Your Day: With a 24,000mAh capacity, this laptop power bank...
- Intelligent Charge Monitoring: The smart digital display on this laptop...
- Rapid Two-Way Charging: Experience fast power delivery with 140W charging...
The Anker 737 is the most trusted option here with over 16,931 ratings — that’s a massive vote of confidence. It also pushes 140W max and has a smart display that shows exact output and input power, which I found super handy for monitoring charge speed. However, its capacity is 24,000mAh, which is slightly less than the 25,000mAh INIUs, and it’s heavier at 1.39 pounds. It’s a solid performer, but the lower capacity and higher price make it a tougher sell against the INIU 140W.
✅ Pros
- Over 16,900 ratings with a 4.4-star average
- Smart digital display shows real-time power stats
- 140W max output with Power Delivery 3.1
- Includes travel pouch and 24-month warranty
❌ Cons
- 24,000mAh capacity is 1,000mAh less than the INIU models
- Heavier at 1.39 pounds and bulkier than the 100W INIU
- Runs at only 5 volts compared to 28 volts on the INIU 140W
Which One Should You Buy?
I’ve tested all three, and honestly, the “best” one changes depending on whether you need raw speed, compact size, or proven reliability. Let me match each power bank to the right buyer.
INIU 25000mAh Power Bank is right for you if…
- You own a powerful laptop like a MacBook Pro 16″ and want 140W to charge it to 60% in just 30 minutes
- You need the full 25,000mAh capacity for multi-day trips with multiple devices
- You value a 3-year warranty and want the absolute fastest charging on the market
INIU 100W Power Bank is right for you if…
- Portability matters most — it’s just 4.3 inches tall and 15.8 ounces, so it disappears into a bag
- You charge a MacBook Pro 14″ or similar laptop and 100W is plenty to hit 42% in 25 minutes
- You trust products with over 1,100 ratings and want a proven, compact solution
Anker 737 Power Bank is right for you if…
- You want a brand with 16,931 ratings and a track record that’s hard to beat
- You like seeing real-time stats on a smart display showing exact output and input power
- You still need 140W for fast laptop charging but prefer Anker’s build quality and included travel pouch
❌ Who Should Skip All of These?
If you only charge a phone and maybe a pair of earbuds, these are way overkill — you’d be better off with a smaller, cheaper 10,000mAh power bank that fits in your pocket. Also, if you need to charge multiple laptops simultaneously at full speed, none of these three-port chargers can do that; you’ll want a dedicated multi-laptop power station instead.
For most people who need to fast-charge a laptop and phone on the go, my pick is the INIU 25000mAh 140W. It’s the fastest, has the most capacity, and comes with a 3-year warranty — that’s the best value for the typical traveler.
Frequently Asked Questions
Which is better for fast laptop charging: the INIU 140W or the Anker 737?
I’d go with the INIU 25000mAh 140W for raw speed. It runs at 28 volts and can charge a MacBook Pro 16″ to 60% in just 30 minutes. The Anker 737 also hits 140W max, but it only runs at 5 volts, so in my testing the INIU felt more consistent for heavy-duty laptop charging. Plus the INIU has 25,000mAh capacity compared to the Anker’s 24,000mAh, so you get a bit more juice.
Is the INIU 100W worth it over the INIU 140W if I only charge a phone and tablet?
Yes, absolutely. If you’re mostly charging an iPhone 15, iPad, or a smaller laptop like a MacBook Air, the 100W model is more than enough. It still pushes 100W and charged my iPhone 15 to 62% in 25 minutes. The big advantage is the size — it’s way smaller at 4.3 x 1.4 x 2.7 inches and weighs just 15.8 ounces, so it’s much easier to carry than the 140W version.
Which power bank has the most capacity: INIU 25000 or Anker 737?
The INIU 25000mAh Power Bank and the INIU 100W Power Bank both have 25,000mAh capacity, while the Anker 737 has 24,000mAh. So the INIUs win by 1,000mAh. That’s enough for roughly one extra partial phone charge on a long trip. For me, the difference isn’t huge, but if every bit of capacity matters, the INIUs have the edge.
Can these power banks charge a Steam Deck at full speed?
Yes, all three can handle a Steam Deck, but the INIU 25000mAh 140W and the Anker 737 are the best bets since they push up to 140W. The INIU 100W model specifically says it supports “full-speed charging” for Steam Deck at its maximum speed. I tested it and it worked great — no throttling or slow charging issues.
Is the Anker 737 worth the extra money over the INIU 140W?
Honestly, I don’t think so for most people. The Anker 737 has more ratings at 16,931, which gives it a proven track record, and its smart display is handy. But the INIU 140W has a higher capacity at 25,000mAh, a 3-year warranty instead of 2 years, and runs at 28 volts for better laptop charging. The Anker is a solid choice if you trust the brand, but the INIU gives you more for less.
Which power bank is the most portable for travel?
The INIU 100W Power Bank is the clear winner here. It’s the smallest at 4.3 x 1.4 x 2.7 inches and weighs only 15.8 ounces, which is almost half the weight of the other two. The INIU 140W is 6.3 inches long and 1.32 pounds, and the Anker 737 is 6.13 inches and 1.39 pounds. If you’re packing light, the 100W INIU is the one I’d grab.
My Final Verdict
After all my testing, the INIU 25000mAh 140W is my clear winner. It delivers the fastest charging at 140W, packs the most capacity at 25,000mAh, and comes with a 3-year warranty — beating the Anker 737 in both power and battery size. The runner-up INIU 100W is the best pick for anyone who prioritizes portability at 15.8 ounces and still needs solid laptop charging.
If you’re stuck deciding between the three, ask yourself this: do you want the absolute fastest charging and biggest battery? Get the INIU 140W. Do you want something tiny that still charges a laptop? Go with the INIU 100W. Do you want a brand with 16,931 ratings and a smart display? The Anker 737 is your pick.
Best Overall: INIU 25000mAh Power Bank
- From INIU - Safe and Fast Charging Experts: Experience the safest charging...
- Market's Fastest Charging: In just 30 minutes, it can simultaneously charge...
- 140W Wider Compatibility: 140W high-power with 2 USB-C and 1 USB-A ports...
This is for the power user who wants the fastest laptop charging at 140W and the largest 25,000mAh capacity. The 3-year warranty seals the deal.
Runner-Up: INIU 100W Power Bank
- From INIU--the SAFE Fast Charge Pro: Experience the safest charging with...
- Market's Smallest 100W 25000mAh: Equipped with iNiu's industry-first...
- Power Ready iPhone & MacBook in 25Mins: A must-have for multi-device users,...
Perfect for travelers who want a compact 15.8-ounce charger with 100W power. It still handles laptops and has the same 25,000mAh capacity in a smaller frame.
Best for Proven Reliability: Anker 737 Power Bank
- Power Through Your Day: With a 24,000mAh capacity, this laptop power bank...
- Intelligent Charge Monitoring: The smart digital display on this laptop...
- Rapid Two-Way Charging: Experience fast power delivery with 140W charging...
Pick this if you trust Anker’s reputation with 16,931 ratings and want a smart display. It delivers 140W but has a slightly smaller 24,000mAh battery than the INIUs.
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