Editor's Pick: Alza has discounted a superbly equipped power bank. It can charge a laptop and boasts great reviews

Looking for a very well-equipped power bank that boasts solid capacity and can even charge your laptop? The AlzaPower WorkMate 25000mAh has now dropped from 1,699 CZK to 1,189 CZK thanks to a direct 30% discount. It has been on sale since last autumn, and users have generally praised it so far.

Quick Summary:
✅ Makes sense if you want one power bank for both your phone and laptop and are looking for a real 140 W output at a reasonable price.
⚠️ Consider if you want a lightweight pocket power bank or have a Samsung with 45W charging (you’ll only get about 27 W from it).
💡 For 1,189 CZK, it offers a decent capacity-to-performance ratio, just expect a realistically usable capacity of around 65–70 Wh, not the full 90 Wh.

Why this power bank is interesting

This AlzaPower power bank targets people who want one device for both phone and laptop and don’t want to carry two different batteries for that purpose. It combines a capacity of 25,000 mAh with an output of up to 140 W via Power Delivery 3.1, which is sufficient even for modern laptops charged via USB-C. Thanks to two USB-C ports and one USB-A, it can also charge up to three devices simultaneously, so you can power your phone, headphones, and laptop all at once.

Key parameters explained in plain language

The power bank nominally has 25,000 mAh, or 90 Wh. However, it’s fair to say that with any power bank, some energy is lost during voltage conversion. Users who measured efficiency found a realistically usable capacity of approximately 65–70 Wh. In practice, this means you can charge a typical phone about 3 to 4 times, or charge a laptop once with some power left over. This is normal for a power bank of this class, but it’s good to be aware of it beforehand.

It’s also interesting that the input handles up to 100 W, so the power bank itself charges in about 3 hours (when using a sufficiently powerful charger). An LCD display informs about the progress, showing battery status, active ports, and current voltage and power. It also features a Low Power Mode for safe charging of headphones and watches, and six-fold safety protection against overvoltage, overheating, and short circuits.

Practical aspects: ports, weight, and travel

Connectivity is handled by two USB-C ports and one USB-A port, with higher power output specifically through the more powerful USB-C. The package includes a reversible USB-C cable with an E-marker chip, so you immediately get a cable that can handle the power. Dimensions of 160 × 82 × 28 mm correspond to its higher capacity. It’s not a lightweight pocket power bank, but rather a backpack battery for longer trips or working away from an outlet.

For travelers, it’s important that 90 Wh is below the airline limit of 100 Wh, so you can take it in your carry-on luggage. This usually doesn’t apply to larger power banks (over 100 Wh), making it an advantage for frequent flying.

What users say

On Alza, the power bank has a rating of 4.6 out of 5 (70 ratings), 89% of customers recommend it, and with over 2,000 units sold, it has a low complaint rate of 1.08%. Most often, people praise its high power and capacity, the clear display showing power for each port, and the fact that it can genuinely power a laptop while also recharging itself quickly.

However, there are also specific criticisms, and it’s worth knowing them beforehand. Several users report heating even under lower load, others mention its higher weight and that the display surface scratches easily. The most thorough users measured efficiency around 70–77%, meaning a real capacity closer to 70 Wh rather than the stated 90 Wh. One reviewer also pointed out that a Samsung with 45W charging will only get about 27 W from it, because the power bank delivers less current at the given voltage than Samsung needs for full speed.

When it doesn’t make sense

If you only need a lightweight pocket power bank to charge your phone, this model is unnecessarily large and heavy, and a smaller battery for a few hundred crowns would suffice. It’s also not suitable for people who want to get the most out of Samsung’s fast charging, as they won’t achieve full speed due to the current delivered. And if you expect full 90 Wh of usable energy from 25,000 mAh, be aware that it will realistically be closer to 70 Wh, similar to competitors in this class.

Verdict: who it’s worth it for

If you are looking for one power bank for both your phone and laptop and want a realistically usable output of up to 140 W with decent capacity, the price of 1,189 CZK instead of 1,699 CZK is appealing. You get a powerful battery with a display, a three-year warranty, and a cable included, with which you can charge a typical phone about 3 to 4 times. Conversely, if you want something small for your pocket or maximum speed for Samsung, you should look elsewhere. However, for this price, the power bank offers a fair balance of capacity and performance.

Do you mainly take a power bank for your phone, or do you also need to charge a laptop away from an outlet?