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AlzaPower Onyx 10000mAh Black - Power Bank

Reviews AlzaPower Onyx 10000mAh Black

Interested in reviews of AlzaPower Onyx 10000mAh Black? It got 4.6 out of 5 stars from our customers. Find specific customer reviews of AlzaPower Onyx 10000mAh Black below. We will appreciate if you also share your experiences with AlzaPower Onyx 10000mAh Black after purchasing.

User Reviews

Daniel, Prahaflag
Rated 03/11/2025, variant AlzaPower Onyx 5000mAh Black
Verified purchase
Battery life, I expected it to charge 20% of my phone battery, it charged over 60% (5000mAh in the phone)
Extremely pleasant compactness, lightness
Price!
Micro USB. The new generation has USB-C, so this negative is more informative
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Milan, Olomoucflag
Rated 02/11/2025, variant AlzaPower Onyx 5000mAh Black
Verified purchase
everything ok
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Stanislav, Plzenflag
Rated 25/10/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
It saves you from having a phone with only 2% battery, but even the iPhone 13, which doesn't have a big battery, won't charge all the way up. The power bank gets quite hot when in use, but it is really compact, so for the price I bought it for in Alza, there is no point in complaining. A great helper when you need to quickly save your phone or IQOS from running out of power - it doesn't charge to 100%, but it got the iPhone 13 up to about 60%.
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Martin, Ostrava - Heřmaniceflag
Rated 23/10/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
For that price (within Alza days for 138 CZK) you cannot expect anything better. I needed a small powerbank to power the LED strip and it accomplished what I wanted. Perhaps the charging could be a little faster.
Compact size
Slower charging
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Anonymous customerflag
Rated 20/10/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
Small, for your purse.
Charges approx. 1 - 2 depending on the level of discharge of the mobile phone
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Miroslav, Králíkyflag
Rated 18/10/2025, variant AlzaPower Onyx 5000mAh Black
Verified purchase - review from a price comparison website
Small, foldable, even after half a year of carrying in a backpack it works.
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Michal, Praha 8 - Bohniceflag
Rated 16/10/2025, variant AlzaPower Onyx 5000mAh Black
Verified purchase
I only went by the price and didn't notice that it doesn't have USB-C charging. Škoda.
Small size
Two USB-A
Price
Micro USB charging
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Patrik, Uherské Hradištěflag
Rated 12/10/2025, variant AlzaPower Onyx 5000mAh Black
Verified purchase
Iphone 13 mini can charge approximately twice from 0 to 100%
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Jiří, Svitavyflag
Rated 22/09/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
Price - I bought it on sale for 142 CZK
Ideal as an emergency power bank for your backpack
Size
Nowadays of course Micro-USB is not optimal, but for the price ok
It's stupid to buy it for more than 200-250 CZK
Only 10 W of power
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Peter, Kameniceflag
Rated 16/09/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
Ok
Ok
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