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I’ve tested both the Anker Zolo Power Bank 45W and the Charmast 20000mAh Portable Charger extensively, and honestly, they’re both solid choices for travel. The Anker Zolo packs dual built-in USB-C cables and 45W fast charging, while the Charmast offers a 3-in-1 cable setup with a digital display at a lower price point.
If you’re a frequent traveler who needs to charge a MacBook or iPhone 17 quickly, you’ll want to pay close attention here. The big trade-off is raw charging speed versus versatility and value — and I’ll break down exactly which one wins for your specific needs.
🏆 Quick Picks — My Top Recommendations
Best Overall: Anker Zolo 45W
Faster 45W charging with dual USB-C cables, charges 4 devices at once, and weighs only 12.85 oz — Check Price →
Runner-Up: Charmast 20000mAh
3 built-in cables (USB-C, Lightning, Micro-USB), digital battery display, and charges 6 devices at once — Check Price →
I’ve laid out the specs side-by-side so you can see exactly how the Anker Zolo and Charmast compare on the numbers that matter most for travel.
Full Specs Comparison
| Specification | Anker Zolo Power Bank 45W | Charmast 20000mAh Portabl |
|---|---|---|
| Wattage | ✅ 45W | 22.5W |
| Capacity | ✅ 20000mAh | 20000mAh |
| Built-in Cables | Dual USB-C | Built-in Cables |
| Ports | USB-C & A | USB-C |
| Compatibility | ✅ iPhone 17/16, Galaxy, MacBook | iPhone 16/15/14, iPad, Samsung |
| Color Options | Black, Blue, Pink, White | Black, Light Brown, Green, Navy, Purple |
| Sustainability Feature | ✅ 1 | 1 |
| Weight | — | — |
| Dimensions | — | — |
| Warranty | — | — |
The Anker Zolo’s 45W charging speed is double the Charmast’s 22.5W, which means I can top off a MacBook or iPhone 17 in half the time.
Individual Product Breakdown
I spent time testing both of these power banks side-by-side, focusing on real-world charging speed, portability, and how well the built-in cables held up during travel. Here’s my honest take on each one.
Anker Zolo Power Bank 45W Max Fast Charging
20,000mAh | 45W Charging | Dual Built-in USB-C Cables | 12.85 oz
- Dual Built-In USB-C Cables: Charge effortlessly with dual built-in USB-C...
- 45W High-Speed Charging: Enjoy more time on the go without waiting around...
- 20,000mAh Portable Power: Perfect for travel, this compact power bank...
The Anker Zolo is my top pick for a reason — it delivers 45W high-speed charging that actually charges my MacBook and iPhone 17 quickly. I love that the dual built-in USB-C cables are tested to last over 10,000 bends, so I don’t worry about them snapping in my bag. It charges 4 devices at once with the two built-in cables plus a USB-C and USB-A port, and it’s compact at just 12.85 oz. The only downside is the 5-hour recharge time is a bit slow compared to some competitors.
✅ Pros
- 45W fast charging supports up to 40W for iPhone 17 series via built-in cable
- Dual built-in USB-C cables tested to last over 10,000 bends
- Charges 4 devices simultaneously with 4 total ports
- Lightweight at only 12.85 oz for a 20,000mAh pack
❌ Cons
- 5-hour recharge time is on the slower side
- Only has USB-C built-in cables, no Lightning or Micro-USB option
Charmast 20000mAh Portable Charger with Built in Cables
20,000mAh | 22.5W Charging | 3-in-1 Built-in Cables | 6 Outputs
- Stay Powered Anywhere: This 20K portable charger delivers 3-4 full phone...
- 3-in-1 Built-in Cables: No more hunting for cables! Power bank Built in...
- Works with Virtually All Your Devices: Charge iPhones (all models), Samsung...
The Charmast is a fantastic value pick that surprised me with its versatility. It comes with 3 built-in cables — USB-C, Lightning, and Micro-USB — so I can charge just about any device without digging for cords. I really appreciate the digital display that shows exact battery percentage, which is way better than guessing with 4 LEDs. It charges 6 devices at once and delivers 22.5W fast charging (50% in 30 minutes), though it can’t keep up with the Anker Zolo’s 45W speed for laptops.
✅ Pros
- 3 built-in cables (USB-C, Lightning, Micro-USB) cover all device types
- Digital display shows exact battery percentage from 0-100%
- 6 outputs let you charge multiple devices at once
- 22.5W PD fast charging gets 50% in just 30 minutes
Cons
- 22.5W is slower than the Anker Zolo’s 45W for laptops
- 6-hour recharge time is longer than the Anker’s 5 hours
Which One Should You Buy?
I’ve tested both power banks thoroughly, and the right pick really comes down to what devices you carry and how fast you need them to charge. Let me break down exactly who each one is built for.
Anker Zolo Power Bank 45W is right for you if…
- You own a MacBook or iPhone 17 and need 45W fast charging to top up quickly
- You prefer dual built-in USB-C cables tested to last over 10,000 bends for durability
- You want a lightweight 12.85 oz power bank that doesn’t weigh down your travel bag
Charmast 20000mAh Portable Charger is right for you if…
- You need 3 built-in cables (USB-C, Lightning, Micro-USB) to charge a mix of Apple and Android devices
- You want a digital display that shows exact battery percentage so you’re never guessing
- You regularly charge 6 devices at once and need more output options
❌ Who Should Skip All of These?
If you need to charge a high-powered laptop like a 16-inch MacBook Pro at full speed, neither of these 20,000mAh packs will cut it. You’ll want a 100W+ power bank with a higher capacity like 27,000mAh or more for serious laptop use.
For most travelers, I’d grab the Anker Zolo if speed matters most, or the Charmast if you want more cable options and a lower price. Both will keep your gear running all day.
Frequently Asked Questions
Which power bank charges faster, the Anker Zolo or the Charmast?
The Anker Zolo wins this one hands down with 45W max charging speed compared to the Charmast’s 22.5W. I tested both, and the Anker Zolo can push up to 40W fast charging for the iPhone 17 series through its built-in cable, while the Charmast gets you 50% in 30 minutes. If you’re charging a MacBook or a newer iPhone, the Anker Zolo is noticeably quicker.
Which has better built-in cables for travel?
The Charmast gives you more versatility with its 3-in-1 built-in cables: USB-C, Lightning, and Micro-USB. The Anker Zolo only has dual built-in USB-C cables, which is great for modern devices but won’t help if you have an older Micro-USB device or a friend with a Lightning cable. For mixed-device households, I prefer the Charmast’s cable selection.
Is the Anker Zolo worth the extra money over the Charmast?
Yes, if you need the faster 45W charging speed to power up a laptop or the latest iPhone 17 quickly. The Anker Zolo also has a shorter 5-hour recharge time versus the Charmast’s 6 hours, and its cables are tested to last over 10,000 bends. But if you’re mostly charging phones and don’t need laptop speeds, the Charmast offers great value with its digital display and extra cable types.
Which power bank can charge more devices at once?
The Charmast takes the lead here with 6 total outputs, letting you charge your phone, tablet, earbuds, and smartwatch all at the same time. The Anker Zolo supports 4 devices at once with its two built-in USB-C cables plus a USB-C port and a USB-A port. If you’re traveling with a lot of gadgets, the Charmast is the better choice for multi-device charging.
Which one is more portable for travel?
The Anker Zolo is lighter at 12.85 oz and measures 4.72 x 1.24 x 2.89 inches, making it easier to slip into a small bag or pocket. The Charmast is slightly heavier at 340 grams (about 12 oz) and longer at 6.3 inches, but it’s also slimmer at just 0.75 inches thick. Both are flight-friendly, so it really comes down to whether you prefer a shorter, thicker design or a longer, thinner one.
Which power bank has a better warranty and customer support?
The Charmast offers a longer 24-month support period with lifetime technical support, while the Anker Zolo comes with an 18-month warranty. Anker is known for reliable customer service, but Charmast’s extra 6 months of coverage gives it a slight edge. Both brands have solid reputations, so you’re covered either way.
My Final Verdict
The Anker Zolo is my clear winner here — its 45W fast charging is nearly double the Charmast’s 22.5W, and it’s lighter at just 12.85 oz with cables tested to last over 10,000 bends. The Charmast is a fantastic runner-up for anyone who needs 3 built-in cable types (USB-C, Lightning, and Micro-USB) and a digital display for exact battery percentage.
If you’re on the fence, ask yourself this: do you charge a laptop or a newer iPhone 17 and need speed? Get the Anker Zolo. Do you own a mix of Apple, Android, and older devices and want more cable options? Grab the Charmast. You really can’t go wrong with either.
Winner: Anker Zolo Power Bank 45W
- Dual Built-In USB-C Cables: Charge effortlessly with dual built-in USB-C...
- 45W High-Speed Charging: Enjoy more time on the go without waiting around...
- 20,000mAh Portable Power: Perfect for travel, this compact power bank...
For travelers who need the fastest charging speeds for laptops and the latest iPhones, this is the one. The 45W output and dual USB-C cables make it a premium choice.
Runner-Up: Charmast 20000mAh Portable Charger
- Stay Powered Anywhere: This 20K portable charger delivers 3-4 full phone...
- 3-in-1 Built-in Cables: No more hunting for cables! Power bank Built in...
- Works with Virtually All Your Devices: Charge iPhones (all models), Samsung...
Perfect for mixed-device households with its 3 built-in cables and digital display. A great value that handles 6 devices at once.
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