Reviews AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Interested in reviews of AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black? It got 4.7 out of 5 stars from our customers. Find specific customer reviews of AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black below. We will appreciate if you also share your experiences with AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black after purchasing.
User Reviews
Patrik, Praha 13 - Stodůlky
Rated 11/10/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
A standard power bank with QC3.0 and a 22.5W charging output.
Capacity 20Ah at 3.7V
Lightweight power bank
USB C and USB A
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Václav, Prostějovičky
Rated 07/10/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
I am very satisfied with the power bank as it serves its purpose. I can highly recommend it.
Reasonable price, charges the phone battery quite quickly. So far I've charged 4 Samsung Galaxy phones, S26 ultra, S8, S22 ultra and an S4, and it's still at 50% battery, so I'm happy. It's obvious that the power bank's capacity will decrease over time with use.
Nothing
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Aki Wendel, praha
Rated 27/09/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase
Super. Isn't overpriced.
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Vladimír, Tišice
Rated 20/09/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase
Does what it's supposed to, with the capacity it states.
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Václav, Klatovy
Rated 10/09/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
Fast charging (phone)
Easy to control (when the device is connected)
Large capacity
More outputs
Portability
The remaining capacity indicator is unclear.
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Ivan, Praha
Rated 01/09/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase
good price
quite compact
From time to time, it's noisy when dispensing – a rushing or even a whistling sound.
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Zdeněk, Praha 15
Rated 17/08/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
It's working as it should.
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David, Tachov
Rated 12/08/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
Small and compact with a large capacity. And on top of that, it's also relatively light compared to similar solutions. Ideal for a backpack for a trip into town or into the countryside.
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Michael, Praha
Rated 08/08/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
Fast charging
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Milan, Všejany
Rated 10/07/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
Small and foldable
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