Power bank with 100 W for 909 CZK. Alza discounted its 20,000 mAh model to a minimum

Power banks with 100 W of power, capable of charging a laptop, usually cost over a thousand. However, you can currently get the AlzaPower WorkMate 20000mAh for 909 CZK with the discount code ALZADNY30; it originally cost 1,299 CZK. It has not been cheaper until now; during the December promotion, it was 1,032 CZK.

Quick summary:
✅ Makes sense if you need a power bank that can charge your phone, tablet, and laptop quickly.
⚠️ Consider if you are looking for wireless charging or need even higher capacity for longer trips.
💡 For 909 CZK, it is one of the most affordable 100W power banks on the Czech market with an LCD display and support for all common fast charging standards.

Why this power bank is interesting

This power bank from AlzaPower targets those who need a reliable backup power source for multiple devices at once. With a capacity of 20,000 mAh (72 Wh) and up to 100 W of power, it can charge not only a phone or tablet but also a modern laptop with USB-C charging. In practice, this means you don’t have to carry a wall charger – just one power bank and one cable.

Charging: fast and for multiple devices

The power bank features two USB-C ports and one USB-A port, allowing you to charge up to three devices simultaneously. The main USB-C port delivers up to 100 W (20 V / 5 A), the second USB-C up to 65 W, and the USB-A port handles 22.5 W. When charging all three devices simultaneously, the power is split into 65 W (USB-C2) and 20 W (USB-C1 + USB-A), which is more than sufficient for most situations.

Supported fast charging standards include Power Delivery 3.0, Quick Charge 3.0, Samsung AFC, Huawei FCP, PPS, and Apple 2.4A. Smart IC technology automatically recognizes the connected device and adapts the optimal current and voltage to it. The power bank itself charges in approximately 3 hours (when using a 65W charger).

Practical aspects: display, safety, dimensions

On the front, you’ll find an LCD display that shows the current charge status in percentages, active ports, and current charging power (V and W). This provides an immediate overview of what’s happening – no guessing based on blinking LEDs. The display sequentially shows data for each active port separately.

Safety is ensured by 6-fold protection against overvoltage, overload, short circuit, overheating, overcharging, and undervoltage. The body is made of flame-retardant material according to the UL94 standard. For charging small devices with low power consumption (headphones, smartwatches), there is a Low Power Mode, activated by holding down the button. Dimensions of 139 × 82 × 28 mm are roughly equivalent to a larger phone, so the power bank fits into a backpack pocket or a carry-on bag.

What users say

On Alza, the power bank has a rating of 4.6 out of 5 (38 reviews) and 87% of customers recommend it. Over 1,000 units have been sold with a return rate of only 0.39%, which is a very low figure. Users most often praise the fast charging, informative display, and favorable price – especially during promotions. One reviewer specifically mentions that during a promotion for under 800 CZK, it was an “absolutely unbeatable” offer.

Critical feedback concerns details: several users mention that the protective film on the display scratches easily and that the battery status in percentages is only approximate. The included USB-C cable is shorter, so it might be worth buying a longer one for more comfortable use. The build quality is rated as average – nothing luxurious, but functional.

If this particular model doesn’t appeal to you, but you’re looking for a power bank on sale, you can also check out the current Alza Days, where other discounted power banks and accessories regularly appear. There is also a variant with a capacity of 25,000 mAh and 140 W of power for 1,699 CZK, if you need even more energy.

Verdict: who it’s worth it for

If you are looking for a power bank that can charge your phone, tablet, and laptop and want to keep track of the charging status thanks to the display, this discount is definitely interesting. For 909 CZK, you get a 100W power bank with support for all common fast charging standards and a USB-C cable included in the package. Conversely, if you need wireless charging or are looking for premium craftsmanship, you will have to opt for more expensive models.

Looking for other accessories on sale? We recently wrote about these promotions 👇

• Tip: Practical desk lamp with a wireless charger discounted by almost four hundred crowns
• Vention power bank has 27,000 mAh, 200W power, and a great display, now discounted by several hundred crowns
• Thin magnetic power bank nicely discounted. With a capacity of 5,000 mAh, it’s only 8.9 mm thick

What power bank capacity do you use? Is 10,000 mAh enough for you, or do you opt for a larger one?