Reviews AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white
Interested in reviews of AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white? It got 4.7 out of 5 stars from our customers. Find specific customer reviews of AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white below. We will appreciate if you also share your experiences with AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white after purchasing.
User Reviews
Customer
Rated 27/11/2025, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white
Verified purchase - review from a price comparison website
Speed
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Miroslav, Třebíč 1
Rated 15/10/2025, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white
Verified purchase
Out of the box, the powerbank looked good, but stopped responding completely on the first charge.
Fortunately, the Alza branch immediately replaced it with another model without any problems and it works perfectly. I appreciate the approach of the dealer who resolved the situation quickly and helpfully. I am writing this review mainly as a warning to others - it seems that there is the occasional defective piece in this series, but if it works, it meets the parameters.
Elegant design, compact dimensions
Good parameters (capacity 20 000 mAh, PD 22.5 W)
When charging for the first time it stopped responding (no LED, did not charge)
Apparently weaker quality control for this series
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Customer, Mělník
Rated 25/09/2025, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white
Verified purchase
Battery life
Design
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Dominik, Brno
Rated 12/09/2025, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) white
Verified purchase
It's not that heavy
Nice in appearance
Nothing yet, I just unpacked it (I'll upgrade)
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Dana, Litohoř
Rated 05/11/2026, variant AlzaPower Onyx Gen2 10000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
More outputs
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Tomáš, Praha 5
Rated 30/10/2026, variant AlzaPower Onyx Gen2 20000mAh Power Delivery (22.5W) black
Verified purchase
The power bank has a great price/performance ratio. It's among the lightest in its category. The build looks sturdy and the remaining capacity indication using 4 LEDs is completely sufficient. It has 3 USB ports, brilliant.
I couldn't find anything.
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Michaela, Praha
Rated 28/10/2026, variant AlzaPower Onyx Gen2 10000mAh Power Delivery (22.5W) black
Verified purchase
fast charging
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Jaroslav, Újezd u Černé Hory
Rated 27/10/2026, variant AlzaPower Onyx Gen2 10000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
Holds a charge for a long time
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Romana, Ostrava 24
Rated 26/10/2026, variant AlzaPower Onyx Gen2 10000mAh Power Delivery (22.5W) black
Verified purchase
super, satisfaction
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Milan, Tvarožná Lhota
Rated 19/10/2026, variant AlzaPower Onyx Gen2 10000mAh Power Delivery (22.5W) black
Verified purchase - review from a price comparison website
It works
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