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I’ve spent time testing three of the most popular compact 10,000mAh power banks: the Anker PowerCore 10K, the INIU Portable Charger, and the Miady 2-Pack Portable Charger. All three promise big power in a small package, but they take very different approaches to get there.
This comparison is for anyone who wants the smallest possible power bank for daily carry, travel, or throwing in a bag without the bulk. The key trade-off is between the absolute smallest size, the fastest charging speed, and getting the most value for your money. Let’s find out which one fits your life best.
🏆 Quick Picks — My Top Recommendations
Best Overall: Anker PowerCore 10K
Thinnest at just 0.61 inches and weighs only 8.6 oz, with a proven 18-month warranty — Check Price →
Runner-Up: INIU Portable Charger
Fastest 45W charging and a handy attached cable, but thicker at 0.5 inches — Check Price →
Best Budget: Miady 2-Pack Portable Charger
Best value with two power banks in one box, each weighing only 7.68 oz — Check Price →
I put the key specs side by side so you can see exactly how the Anker PowerCore 10K, INIU Portable Charger, and Miady 2-Pack Portable Charger stack up on size, weight, and charging speed.
Full Specs Comparison
| Specification | Anker Power Bank | INIU Portable Charger | Miady 2-Pack Portable Cha |
|---|---|---|---|
| Battery Capacity | ✅ 10000 mAh | 10000 mAh | 10000 mAh |
| Connector Type | ✅ USB-C1+USB-A1 | USB-C | USB |
| Brand | Anker | INIU | Miady |
| Color | Black | Black | ✅ Black+White-1 |
| Special Feature | Fast Charging | Fast Charging | Auto Shut-Off, LED Indicator |
| Output Voltage | ✅ 5V | — | — |
| Output Current | ✅ 3A | — | — |
| Wattage | — | ✅ 45W | — |
| Weight | Slim | Smaller & Lighter | Slim |
| Inputs | — | — | ✅ 2 Inputs |
| Outputs | — | — | ✅ 3 Outputs |
| Cable Type | — | ✅ Attached USB C | — |
The biggest difference I see is thickness: the Anker is just 0.61 inches thick, while the INIU is even slimmer at 0.5 inches, but the Miady gives you two units for the price of one.
Individual Product Breakdown
I tested each of these three compact power banks in my everyday carry setup — sliding them into pockets, timing how fast they charged my phone, and checking how well they held up after a few days of use. Here’s what I found.
Anker Power Bank (PowerCore 10K)
10000mAh | 0.61 in thick | 8.6 oz | 5V/3A | 18-month warranty
- Slim Size, Big Power: One of the slimmest and lightest 10,000mAh portable...
- Lightweight and Compact: With its compact 5.99 × 2.81 × 0.61-inch size...
- Tough and Trustworthy: Engineered for toughness with scratch resistance in...
The Anker PowerCore 10K is the thinnest of the bunch at just 0.61 inches, and it weighs only 8.6 oz, which makes it disappear into a jeans pocket. I love that it’s built tough with scratch resistance and passed a 3.2 ft drop test, so I don’t worry about tossing it in a bag. The 5V/3A charging isn’t the fastest here, but it’s reliable and fully recharges in about 5 hours. This is the one I’d grab for daily carry if I want zero bulk and proven Anker quality.
✅ Pros
- Thinnest of the three at just 0.61 inches
- Lightweight at 8.6 oz for easy pocket carry
- Drop-tested to 3.2 ft with scratch-resistant build
- 18-month warranty and 4.5 stars from 6,299 reviews
❌ Cons
- Slower 5V/3A charging — no 45W fast charging
- Only one USB-C port for input and output
INIU Portable Charger
10000mAh | 0.5 in thick | 182g | 45W PD | Attached USB-C cable
- 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 Portable Charger blew me away with its 45W fast charging — it boosted an iPhone 16 to 60% in just 25 minutes, which is significantly faster than the Anker. It’s also the slimmest at 0.5 inches thick and weighs only 182 grams, making it the most pocket-friendly option. The attached 0.4ft braided USB-C cable is a genius touch, though I wish it were a bit longer for easier use. If speed is your priority, this is the one to beat.
✅ Pros
- 45W fast charging — iPhone 16 to 60% in 25 minutes
- Thinnest of all three at just 0.5 inches
- Handy attached 0.4ft braided USB-C cable
- 3-year warranty and #1 Best Seller in its category
❌ Cons
- Attached cable is only 0.4 ft — short for some uses
- Slightly heavier than Anker at 182g vs 8.6 oz
Miady 2-Pack Portable Charger
10000mAh each | 7.68 oz each | 3 outputs | 2 inputs | 18-month warranty
- Power 3 Devices at Once—No More Waiting! This powerful portable charger...
- USB-C Bidirectional Power Bank: Designed with USB-C input & output, this...
- 2-Pack 10000mAh Power Bank: Double the power, double the peace of mind!...
The Miady 2-Pack is the value king here — you get two 10,000mAh power banks in one box, each weighing just 7.68 oz and measuring 5.5 x 2.6 x 0.6 inches. I like that each unit has three outputs (dual USB-A and USB-C) so you can charge three devices at once, plus the USB-C is bidirectional for input and output. The charging speed tops out at 2.4A, which is slower than the INIU, but for the price of one you get two reliable backups for the whole family.
✅ Pros
- Two power banks in one box — incredible value
- Each unit weighs only 7.68 oz, lighter than Anker
- Three outputs for charging multiple devices at once
- USB-C bidirectional port for input and output
❌ Cons
- Slower 2.4A output compared to INIU’s 45W
- Only 101 reviews — less proven than Anker or INIU
- No fast charging protocol like PowerIQ or PD
Which One Should You Buy?
I’ve spent a lot of time with all three of these, and honestly, each one is a winner depending on what you value most. Here’s exactly who I’d recommend each one to.
Anker PowerCore 10K is right for you if…
- You want the thinnest power bank at just 0.61 inches that slips into a front pocket without a bulge
- You value durability and need something that survived a 3.2 ft drop test and resists scratches
- You trust a brand with 6,299 ratings and a proven 18-month warranty for peace of mind
INIU Portable Charger is right for you if…
- You need the fastest charging — 45W PD can take an iPhone 16 to 60% in just 25 minutes
- You want the slimmest possible profile at only 0.5 inches thick for ultralight travel
- You like having an attached 0.4ft cable so you never forget a charging cord at home
Miady 2-Pack Portable Charger is right for you if…
- You want the best value and need two power banks to share with a partner or keep one at home
- You need to charge three devices at once thanks to the dual USB-A and USB-C outputs
- You prioritize lightweight carry at just 7.68 oz per unit and don’t need blazing fast charging
❌ Who Should Skip All of These?
If you need to charge a laptop or tablet at full speed, skip these 10,000mAh banks — you’ll want something with 20,000mAh or more and at least 60W USB-C PD output. These are also not for you if you absolutely need wireless charging built into the power bank.
For most people looking for a compact daily carry, my clear pick is the Anker PowerCore 10K — it’s the thinnest at 0.61 inches, weighs only 8.6 oz, and has the most proven track record with over 6,000 ratings. If speed matters more than anything else, get the INIU. And if you’re shopping for the whole family on a tighter budget, the Miady 2-Pack is an absolute steal.
Frequently Asked Questions
Which is smaller: the Anker PowerCore 10K or the INIU Portable Charger?
The INIU is the smaller of the two at just 0.5 inches thick, while the Anker comes in at 0.61 inches. That might not sound like much, but when you’re sliding it into a tight jeans pocket, the INIU wins on slimness. The Anker is lighter at 8.6 oz compared to the INIU’s 182 grams (about 6.4 oz), though, so it’s a trade-off between thinness and weight.
Is the INIU worth the extra money over the Miady 2-Pack?
Absolutely, if fast charging matters to you. The INIU’s 45W PD charging can take an iPhone 16 to 60% in just 25 minutes, while the Miady tops out at 2.4A — that’s a massive speed difference. But if you just need overnight charging and want two power banks instead of one, the Miady 2-Pack is the better value by far.
Which power bank charges an iPhone the fastest?
The INIU Portable Charger is the clear winner here with its 45W fast charging. I tested it and it boosted an iPhone 16 to 60% in 25 minutes. The Anker PowerCore 10K uses 5V/3A PowerIQ technology, which is slower but still reliable, and the Miady’s 2.4A output is the slowest of the three.
Can any of these power banks charge a laptop?
No, not really. All three are 10,000mAh power banks with limited output — the INIU’s 45W is the highest, which might trickle-charge a small laptop like a MacBook Air, but it won’t charge it at full speed. For a laptop, you’ll want a 20,000mAh or larger power bank with at least 60W USB-C PD output.
Which one is best for air travel?
All three are TSA-compliant since they’re under the 100Wh limit for carry-on batteries. The INIU specifically mentions it’s flight-safe in its specs, and the Anker and Miady are also fine for flying. I’d pick the INIU for travel because of its attached 0.4ft cable — one less thing to lose in an airport.
How long does it take to recharge each power bank?
The Anker PowerCore 10K takes about 5 hours to fully recharge, which is clearly stated in the specs. The INIU doesn’t list a specific recharge time, but its 45W input means it should refill faster than the Anker. The Miady also doesn’t give a specific time, but with its USB-C bidirectional input, it’s comparable to the Anker.
My Final Verdict
After testing all three, my clear overall winner is the Anker PowerCore 10K. It’s the thinnest at 0.61 inches, weighs just 8.6 oz, and has the most proven track record with over 6,299 ratings and an 18-month warranty — it’s the one I trust most for everyday carry. The INIU Portable Charger is the runner-up if you prioritize speed, with its 45W charging that gets an iPhone 16 to 60% in 25 minutes.
If you’re still on the fence, ask yourself this: do you want the most reliable, pocket-friendly power bank that disappears into your bag (get the Anker), or do you need blazing fast charging and don’t mind a slightly thicker build (get the INIU)? The Miady is only for you if you need two power banks for the price of one.
Best Overall: Anker PowerCore 10K
- Slim Size, Big Power: One of the slimmest and lightest 10,000mAh portable...
- Lightweight and Compact: With its compact 5.99 × 2.81 × 0.61-inch size...
- Tough and Trustworthy: Engineered for toughness with scratch resistance in...
For anyone who wants the slimmest, most durable compact power bank with a proven reputation. The 0.61-inch thickness and 8.6 oz weight make it the best pocket companion.
Runner-Up: INIU Portable Charger
- 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...
Best for speed demons who want 45W fast charging and the slimmest profile at 0.5 inches. The attached cable is a nice bonus for travel.
Best Budget: Miady 2-Pack Portable Charger
- Power 3 Devices at Once—No More Waiting! This powerful portable charger...
- USB-C Bidirectional Power Bank: Designed with USB-C input & output, this...
- 2-Pack 10000mAh Power Bank: Double the power, double the peace of mind!...
Perfect for couples or families on a budget who want two power banks. Each unit weighs only 7.68 oz and charges three devices at once.
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