Try our cookiesAlza.cz a. s., Company identification number 27082440, uses cookies to ensure the functionality of the website and with your consent also to personalisage the content of our website. By clicking on the “I understand“ button, you agree to the use of cookies and the transfer of data regarding the behavior on the website for displaying targeted advertising on social networks and advertising networks on other websites.
We use 8 categories of cookies on our website:
Technical cookies
These are strictly necessary for the functioning of the website and the features you choose to use. Without them, our website would not work; you wouldn't be able to log in to your user account, for example.
Functionality cookies
These cookies allow us to remember your basic choices and improve the user experience. These include remembering your preferred language or allowing you to stay logged in permanently.
Social media cookies
These cookies allow us to easily link you to your social media profile and, for example, allow you to share products and services with your friends and family.
Content personalisation
These cookies allow us to show you content and ads according to the information we have about you to best meet your needs. This includes what content you have viewed, or on what device you are accessing our website.
Non-personalised advertising
These cookies allow us to show you general ads for products and services.
Personalised advertising
Thanks to these cookies, we and our partners can offer you relevant products and services based on your purchases, your shopping behaviour and your preferences.
Audience metrics
These cookies allow us to optimise our site for your convenience based on how you use it. The aim is to remember or anticipate your choices. This includes, for example, the use of features, their location, or the behaviour on the page.
Third party cookies
These are third party cookies, and you can find out more about them and our partners here.
By giving your consent to the processing of cookies, functionality and analytical cookies will be installed on the device you use to browse the website (click on the "I understand" button for both categories, or you can select only one of the categories by clicking on the "Settings" button). We always install technical cookies on your device, even without your explicit consent, because without them our website would simply not work.
You can revoke your consent to the processing of cookies. In connection with our company's cookie processing, you also have the following rights: the right to access cookies, delete, modify, supplement and correct them, restrict processing and the right to lodge a complaint with the Office for Personal Data Protection. Read more about your rights.
Interested in reviews of AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white? It got 4.8 out of 5 stars from our customers. Find specific customer reviews of AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white below. We will appreciate if you also share your experiences with AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white after purchasing.
Rated 08/05/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase - review from a price comparison website
Supports super fast device charging
fairly fast battery charging with a powerful charger
0 ×Report
Automatic translation
Petr, Jablonec nad Nisou 1
Rated 15/04/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase
For me, a super ratio of capacity, capability and weight to price.
Samsung only fast charges the phone via USB-C (18W); on USB-A it runs classically 5 V, 2.6 A (13 W).
It doesn't do pass-through charging (but it doesn't promise it either) - once it charges, it reduces the charging speed of connected devices.
Indicates whether it is charging with a fast charger (green last LED) or slowly.
It has a real 20,000 mAh in just 322 grams of weight.
At USB 5 V it delivered 14.8 Ah / 71.9 Wh, which corresponds well to the claimed 74 Wh battery (minus conversion losses).
Lenovo/Xiaomi devices charged by QC 18 W
The 33W Xiaomi charger charges at 18W
0 ×Report
Automatic translation
Customer
Rated 07/04/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase
Awesome
0 ×Report
Automatic translation
Karel, Ostrava
Rated 05/04/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase - review from a price comparison website
Thank you
0 ×Report
Automatic translation
Petra, Ústí nad Labem 7
Rated 29/03/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase
compact with fast charging
0 ×Report
Automatic translation
Linda, Český Těšín
Rated 25/03/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase
Charges quickly
It takes quite a long time to recharge
0 ×Report
Automatic translation
Jana, Náchod
Rated 25/03/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase - review from a price comparison website
Large capacity and it's not just on USB
0 ×Report
Automatic translation
Emílie, Mělník 1
Rated 24/03/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase
Purchased so we don't have to fight over outlets when we travel. After a 12-hour charge before a trip abroad, it could only charge one mobile phone and that was it. So once again we had to figure out how to get a large family to charge their phones gradually overnight when there is only one outlet.
We'll give her one more chance and then we'll probably say goodbye if she doesn't recover.
price
only managed to charge 1x mobile phone
0 ×Report
Automatic translation
Kryštof, Praha 4 - Šeberov
Rated 15/01/2025, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase
High capacity
Light weight
Price
0 ×Report
Automatic translation
Company
Rated 05/12/2024, variant AlzaPower Onyx 20000mAh Fast Charge + PD3.0 white
Verified purchase
Best power bank I've had so far
She's taken an awful lot of falls.
High resistance
Nothing
0 ×Report
Automatic translation
11 - 20 from 228
P-DC1-WEB15
Sicheres EinkaufenWir bieten einen zusätzlichen 60-tägigen Rückgabeservice auf die meisten Produkte anMore info »