Which power bank to buy? We've selected 10 models that are currently the most worthwhile

A power bank is one of those things you remember you don’t have exactly when you need it. And now is a good time to fix that – as part of Alza Days, prices for a whole range of models have dropped by 20 to 40 percent. We’ve reviewed the current offer and selected ten power banks worth your attention. We’ve listed them from cheapest to most expensive, and for each, we’ll explain who it’s suitable for and what its limitations are.

Quick summary:
✅ Just want to charge your phone – go for the AlzaPower Parade Gen2 for 479 CZK (2,000+ units sold, rating 4.7/5).
✅ Have an iPhone and want MagSafe – two magnetic ChoeTech variants for 489 CZK, one ultra-thin, the other with a stand.
✅ Need to charge a laptop – AlzaPower Vision 100W for 974 CZK or Anker 737 for 2,379 CZK are proven choices.
✅ Going to a festival or camping – ChoeTech 50,000 mAh for 909 CZK holds enough power for the whole weekend.
⚠️ Power banks over 100 Wh (approximately 27,000+ mAh) usually cannot be taken on an airplane.

Compact for your pocket: under 500 CZK

1. AlzaPower Parade Gen2 10,000 mAh – 479 CZK

The best-selling power bank in the entire overview. The AlzaPower Parade Gen2 with code ALZADNY20 costs 479 CZK, which is a great price. Over 2,000 units have been sold on Alza, with a rating of 4.7 out of 5 from 346 customers, and virtually zero complaints (0.07%). It has two USB-C and one USB-A port, supports both PD 3.0 and QC 3.0, and the display shows current and voltage – not just four LEDs.

For whom: A universal power bank for everyday carry. Fits in a pocket, charges a phone once or twice, supports fast charging. It also has a Low Power Mode for watches and headphones.

Beware of: When charging multiple devices simultaneously, the power drops to 15 W and fast charging is disabled. The display scratches easily. There is no hole for the included lanyard with cable.

2. ChoeTech MagLeap Wireless 5,000 mAh – 489 CZK

The thinnest power bank in the overview. The ChoeTech MagLeap Wireless currently costs 489 CZK instead of 699 CZK. With a thickness of 8.9 mm and a weight of 165 grams, you can keep it attached for a long time without your hands complaining. 15 W wireless charging, 20 W wired charging via USB-C. It’s enough for one iPhone/Pixel charge.

For whom: Owners of iPhone 12 and newer or current Pixel phones with magnets, who want the thinnest possible daily backup. Suitable for a pocket, a walk, or a short trip.

Beware of: It heats up during wireless charging, and the real capacity is lower due to losses. One user reported a swollen battery after six months. For Android phones (except new Pixels), you need a magnetic case.

3. ChoeTech PD20W 10,000 mAh Magnetic with Stand – 489 CZK

Same price as the previous model, but double the capacity. The ChoeTech with 10,000 mAh and magnetic attachment costs 489 CZK with code ALZADNY30 instead of 699 CZK. Compared to the thinner variant, it offers approximately two full phone charges, a built-in stand for watching videos, and QC 3.0 support. Rated 4.5 out of 5 by 34 customers, over 500 units sold.

For whom: Those who want a MagSafe power bank with greater capacity and don’t mind a slightly higher weight (210 g). The stand is a nice bonus for video calls or watching series.

Beware of: Only one USB-C output – you can’t charge multiple devices simultaneously. The 15 W wireless power is not the fastest. For Android, you’ll need a magnetic case again.

Large capacity for little money: under a thousand CZK

4. ChoeTech Digital B730 30,000 mAh – 545 CZK

Thirty thousand milliamp-hours for five hundred CZK. The ChoeTech B730 with code ALZADNY30 costs 545 CZK instead of 779 CZK. You can charge your phone five to six times, it has three outputs (2× USB-A, 1× USB-C), a display with percentage status, and PD support with 20 W power. Rated 4.7 out of 5 by 278 customers, over 500 units sold.

For whom: You’re looking for as much energy as possible for as little money as possible. For a festival, camping, or as a car backup. The best capacity/price ratio in the entire overview.

Beware of: Weight 607 g – not for your pocket. The display sometimes arrives scratched from the factory. Some users report whistling during charging. The 111 Wh capacity exceeds the flight limit – you cannot take it on an airplane.

5. ChoeTech Digital 50,000 mAh – 909 CZK

The largest capacity in the entire overview. The ChoeTech 50,000 mAh with code ALZADNY30 costs 909 CZK instead of 1,299 CZK. You can charge your phone eight to nine times. One customer took it to a four-day festival and managed to charge two phones with it for the entire weekend. Three outputs (2× USB-A, 1× USB-C), 22.5 W fast charging, and a display. Rated 4.7 out of 5 by 277 customers.

For whom: Multi-day stays without electricity – festivals, camping, fishing trips. Backup power source for the home. Those who want to charge multiple devices from one power bank.

Beware of: A full charge takes 10–12 hours even with a fast charger (users recommend at least a 65W adapter). Weight over 400 g and dimensions are comparable to a brick. The 185 Wh capacity significantly exceeds the flight limit – definitely not for airplanes. Isolated reports of heating after prolonged use.

6. AlzaPower Vision 10,000 mAh 100W – 974 CZK

The category changes here. The AlzaPower Vision 100W with code ALZADNY25 costs 974 CZK instead of 1,299 CZK. The capacity is “only” 10,000 mAh, but the 100 W output power from a single USB-C port means it can even charge a laptop. Aluminum body, colorful TFT display showing wattage on individual ports, temperature, cycle count. It charges in an hour. Rated 4.9 out of 5 by 19 customers.

For whom: Laptop owners who want a compact backup for a few hours of work. You can take the power bank on an airplane (37 Wh). Premium craftsmanship at a reasonable price.

Beware of: The 10,000 mAh capacity will not fully charge a laptop – it will rather extend its battery life by a few hours. One user reported an issue with pass-through charging.

Charging laptops: over a thousand CZK

7. Vention 20,000 mAh 165W – 1,259 CZK

A good compromise between capacity and power. The Vention 20,000 mAh 165W currently costs 1,259 CZK instead of 1,799 CZK (30% discount). One USB-C port handles 100 W, and with two USB-C ports simultaneously, you get 100 + 65 W. Built-in 50cm USB-C cable with textile braiding, TFT display with temperature and battery health. It charges itself in 1.5 hours.

For whom: Travelers and digital nomads who want to charge both a laptop and a phone simultaneously. The 74 Wh capacity means you can take it on an airplane.

Beware of: This is a relatively new product without a large number of reviews – we don’t have as much user feedback as with other models in the overview.

8. AlzaPower Vision 27,600 mAh 140W – 1,724 CZK

The best capacity/power/price ratio for laptops. The AlzaPower Vision 27,600 mAh with code ALZADNY25 costs 1,724 CZK instead of 2,299 CZK. 140 W power via USB-C (PD 3.1), total combined power 162.5 W, aluminum body, and TFT display. One reviewer charged a MacBook Pro 16″ from 1 to 75% in less than an hour. It recharges itself in less than an hour with a 96W adapter. Rated 4.9 out of 5. Capacity 99.36 Wh – just under a hundred, so it passes for air travel.

For whom: Professionals on the go who need to fully charge a smaller laptop. Photographers, video editors, programmers. Those who want a power bank for air travel and also as much capacity as possible.

Beware of: Weight 640 g. The included cable and case are of low quality according to reviewers – it’s better to get your own. Does not support proprietary Xiaomi fast charging.

9. Vention 27,000 mAh 200W – 2,024 CZK

The highest combined power in the overview. The Vention 27,000 mAh 200W with code ALZADNY25 costs 2,024 CZK instead of 2,699 CZK. When using both USB-C ports simultaneously, you get 100 + 100 W – you can charge two laptops at once. It supports PD 3.1, PPS, and UFCS. Built-in 50cm cable, also includes a separate 240W USB-C cable in the package. TFT display with temperature and battery health. Charges in 2 hours. Capacity 99.9 Wh – just under the airplane limit.

For whom: Those who need to charge two powerful laptops or MacBooks simultaneously. Digital nomads with multiple devices. Those who want maximum power and still want to take the power bank on an airplane.

Beware of: A relatively new product without a large number of reviews. Higher price compared to AlzaPower Vision 140W, while the capacity is similar. The main difference is in the combined power of 200 vs 162.5 W.

10. Anker 737 GaNPrime 24,000 mAh 140W – 2,379 CZK

The most expensive power bank in the overview, but also the most proven in the “for laptops” category. The Anker 737 currently costs 2,379 CZK instead of 3,990 CZK – a 40% discount. Over a thousand units have been sold on Alza, with a rating of 4.6 out of 5 from 43 customers, and a complaint rate of 1.84%. It can keep a MacBook Pro 14″ running for approximately 6 hours. It recharges itself in less than an hour with a 100W adapter. The package includes a 140W USB-C cable and a protective case.

For whom: Those who want a proven brand with thousands of units sold and a long-standing reputation. Owners of MacBooks and powerful laptops. Those who prefer a proven product over a new release.

Beware of: Weight 635 g. Anker exclusively uses USB Power Delivery – phones with proprietary charging (Huawei SuperCharge, OnePlus VOOC) will not utilize the full power. The 86.4 Wh capacity is lower than the AlzaPower Vision for 1,724 CZK, but in return, you get brand assurance and rich accessories in the package.

Which power bank to choose: a quick guide

Ten power banks are a lot, so let’s simplify it. If you’re just charging a phone and want the cheapest option, the AlzaPower Parade Gen2 for 479 CZK is the clear choice – proven by thousands of customers. Have an iPhone and want MagSafe? For 489 CZK, there are two ChoeTech variants – the ultra-thin 5,000 mAh or the 10,000 mAh with a stand. For a festival or camping, it’s hard to beat the ChoeTech 50,000 mAh for 909 CZK. And if you need to charge a laptop, the decision is between the AlzaPower Vision 140W for 1,724 CZK (best capacity/price ratio) and the Anker 737 for 2,379 CZK (proven brand, case included in package).

All discounts are part of the ongoing Alza Days. Prices and availability may change – if any model caught your eye, it’s worth not delaying.

Which power bank do you use? Is a compact backup for your phone enough, or do you also need to charge a laptop?