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AlzaPower Onyx 5000mAh Black - Power Bank

Reviews AlzaPower Onyx 5000mAh Black

Interested in reviews of AlzaPower Onyx 5000mAh Black? It got 4.6 out of 5 stars from our customers. Find specific customer reviews of AlzaPower Onyx 5000mAh Black below. We will appreciate if you also share your experiences with AlzaPower Onyx 5000mAh Black after purchasing.

User Reviews

Aleš, Praha 4 - Hájeflag
Rated 09/08/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase - review from a price comparison website
Lightweight, charging speed matches, I originally thought I would miss the capacitive display, but the 4 diodes fully suit me. And especially light and small as a possible backup for a day trip
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Hana, Praha 3 - Žižkovflag
Rated 08/08/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
A fully charged powerbank will only give your mobile phone with the same battery capacity about 70% of a charge, but it will still serve as a foldable emergency kit.
small size, very compact
small capacity
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Companyflag
Rated 13/07/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
I disassembled the power bank, it is quite well made. I'm a bit puzzled that the battery in it has a stated capacity of exactly 5000mAh, so the electronics would have to be 100% efficient for the entire powerbank to have a capacity of 5000mAh.
Small size
Lightweight
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Marta, Opavaflag
Rated 17/06/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase - review from a price comparison website
small, chic
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Antonín, Chebflag
Rated 11/06/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase - review from a price comparison website
Lightweight pleasant easy to operate
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Radim, Orlová - Lutyněflag
Rated 22/05/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
Tiny
5000 mha
Lightweight
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Customer, Ostravaflag
Rated 12/05/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase
Price to Value ratio
Robust design
Easy to use
Ports a bit outdated for 2025, but for cheapest model I think it is fine
Charging time
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František, Třebíčflag
Rated 10/05/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase - review from a price comparison website
The advertised 5000 mA is not there at all
Slow charging and discharging
They are no longer a match for mobile phones today in terms of capacity or speed.
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Jiří, Liberec 1flag
Rated 25/04/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase - review from a price comparison website
Ideal as an emergency pocket bag for recharging one phone. Small size and light weight.
Light weight
Small size
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Customerflag
Rated 17/04/2025, variant AlzaPower Onyx 5000mAh White
Verified purchase - review from a price comparison website
Super quality and price
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