Why I Own Too Many Power Banks
I’ve been burned by a dead phone at the wrong moment enough times that I now keep power banks everywhere - my work bag, my car, my travel kit. It’s probably overkill. But after testing a bunch of them over the years, I’ve figured out what actually matters and what’s just marketing.
Here’s what’s worth buying depending on what you need.
Quick Comparison
| Power Bank | Capacity | Output | Weight | Price |
|---|---|---|---|---|
| Anker 737 | 24,000mAh | 140W | 632g | [Check Price] |
| Anker 622 MagGo | 5,000mAh | 7.5W | 140g | [Check Price] |
| Baseus Blade 2 | 20,000mAh | 100W | 450g | [Check Price] |
| Mophie XXL | 20,000mAh | 45W | 400g | [Check Price] |
| Nitecore NB10000 | 10,000mAh | 20W | 150g | [Check Price] |
Top 5 Picks
1. Anker 737 Power Bank
This thing is a brick. But it’s a very capable brick.
Specs:
- 24,000mAh capacity
- 140W output (yes, really)
- Smart display showing capacity and wattage
- Three ports for simultaneous charging
What makes it different: You can actually charge a MacBook Pro at full speed. Most power banks tap out around 60W, which means slow laptop charging. This one doesn’t have that problem.
The display is useful - shows exactly how much power is left and how fast things are charging. Pass-through charging works well too, so you can charge the power bank and your devices at the same time.
The trade-off: It’s heavy. 632g is noticeable in a bag. And if you just need to top up your phone a couple times, this is way more than you need.
Good for: People who work remotely from coffee shops, anyone who needs laptop charging on the go, digital nomads
2. Anker 622 MagGo
If you have an iPhone 12 or newer, this is pretty slick.
Specs:
- 5,000mAh capacity
- MagSafe compatible
- Built-in kickstand
- Slim profile
How it works: It magnetically snaps onto the back of your iPhone and charges wirelessly. No cables needed. The kickstand means you can prop your phone up while it charges.
I keep one of these in my bag as a backup. When I need a bit more juice, I just snap it on and keep using my phone. Convenient in a way that plugging in cables isn’t.
The trade-off: Only one full charge for most iPhones. Wireless charging is slower than wired. And obviously, Android people can’t use this.
Good for: iPhone users who want grab-and-go convenience
3. Baseus Blade 2
The value pick. Laptop charging power without the laptop charging price.
Specs:
- 20,000mAh capacity
- 100W output
- LED display
- Surprisingly thin for the capacity
What impressed me: 100W output at this price point is unusual. You can charge most laptops with this, and the slim design doesn’t scream “I’m carrying a giant battery.”
The display is basic but functional. Build quality is a step below Anker but still reasonable.
The trade-off: Gets warm when charging at high wattages. Baseus isn’t as established as Anker or Mophie, so long-term durability is a bit of an unknown.
Good for: Budget-conscious buyers who still need laptop charging capability
4. Mophie Powerstation XXL
Mophie’s been making power banks forever. This one is all about build quality.
Specs:
- 20,000mAh capacity
- 45W maximum output
- Wireless charging pad on top
- Premium fabric finish
The appeal: It just feels nice. The fabric exterior looks better than plastic and hides scratches. The wireless charging pad means you can set a phone on top and charge without cables.
Mophie products tend to last. The warranty is solid.
The trade-off: 45W isn’t enough for some laptops - MacBooks need more for full-speed charging. And it’s expensive for the specs. You’re paying for the brand and build quality.
Good for: People who care about aesthetics, anyone wanting wireless charging in a power bank
5. Nitecore NB10000
For the “every gram counts” crowd.
Specs:
- 10,000mAh capacity
- 20W output
- Carbon fiber shell
- Only 150 grams
Why it exists: If you’re backpacking or traveling ultralight, weight matters. This is probably the lightest 10,000mAh power bank you can buy that isn’t garbage quality.
The carbon fiber isn’t just for looks - it’s genuinely light and tough. Dual USB-C ports are nice.
The trade-off: 20W output is phone-only territory. No laptop charging. Premium price for the capacity. But if weight is your priority, it’s worth it.
Good for: Backpackers, ultralight travelers, minimalists
How to Choose
Capacity Guide
| Capacity | What It Gets You | Best For |
|---|---|---|
| 5,000mAh | About 1 full phone charge | Emergency backup |
| 10,000mAh | 2-3 phone charges | Day trips, commuting |
| 20,000mAh | 4-5 phone charges | Travel, camping |
| 24,000mAh+ | Laptops and multiple devices | Working remotely |
My suggestion: For most people, 10,000-20,000mAh is the sweet spot. Big enough to be useful, small enough to carry around without noticing.
Power Output (Why Wattage Matters)
20W or less:
- Charges phones at normal speed
- Won’t charge laptops
- Fine for casual use
45-65W:
- Fast charges phones
- Slow charges some laptops
- Good for most people
100W+:
- Full speed laptop charging
- Charges everything quickly
- Only needed if you use laptops on the go
USB-C vs USB-A
At this point, just get USB-C. Newer devices all use it, charging is faster, and you can use one cable for everything. USB-A ports are fine as a backup, but USB-C should be the main connector.
Things I Learned the Hard Way
Cheap power banks lie about capacity. That 20,000mAh no-name brand from Amazon? Probably more like 12,000. Stick with known brands.
Airline rules: Most airlines allow power banks up to 100Wh in carry-on. The 24,000mAh Anker is about 88Wh, so it’s fine. But check if you’re traveling internationally - rules vary.
Heat kills batteries. Don’t leave power banks in hot cars. Don’t charge them on soft surfaces that trap heat. They’ll degrade faster.
The capacity number isn’t what you actually get. Some power is lost to heat during charging. A 10,000mAh bank might deliver closer to 7,000-8,000mAh of actual charging.
Bottom Line
Need laptop charging? Anker 737 is the best option if you can handle the weight
iPhone user wanting simplicity? Anker 622 MagGo - the magnetic snap is genuinely convenient
Best value? Baseus Blade 2 - laptop charging at a reasonable price
Care about aesthetics? Mophie Powerstation XXL - feels premium
Weight matters most? Nitecore NB10000 - lightest option that’s still quality
Match the power bank to what you actually need. A massive 24,000mAh unit is overkill if you just want emergency backup for your phone.
Prices change frequently. Check current price before buying.