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Interested in reviews of AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black? It got 4.8 out of 5 stars from our customers. Find specific customer reviews of AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black below. We will appreciate if you also share your experiences with AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black after purchasing.
Rated 09/11/2025, variant AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black
Verified purchase - review from a price comparison website
large capacity, charges multiple devices just fine
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Michaela, Plzeň 26
Rated 06/11/2025, variant AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black
Verified purchase - review from a price comparison website
we used in the car, after travelling around Europe, long lasting, so great
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Miroslav, Zábřeh
Rated 30/10/2025, variant AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black
Verified purchase
Great I am satisfied
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Lucie, Brno
Rated 29/10/2025, variant AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black
Verified purchase
Nice, such an ordinary powerbank, but at a very good price.
The declared capacity is 100%. I opened the power bank and measured the capacity of the cells inside - measured 19930mAh at 3A to 3V.
When discharging 12V/1A (quick charge), the output was 5640mAh. For comparison, the Xiaomi 20000mAh 45W powerbank had just a little more (5820mAh).
Compared to the Xioami 20000mAh 45W one, it has very "skinny" electronics with only a few circuits. A couple of photos for comparison, xiaomi has the other side of the platform as well. Compared to xiaomi, it is physically smaller (and cells) and costs less than half. Everything in the powerbank is controlled by the SW6236 circuit. The internal battery consists of 2x 10000mAh cells connected in parallel. Charging of the cells stops at 4.20V and disconnects at 3.0V when discharging.
Unfortunately, the powerbank can only handle 12V (both directions), the mentioned xiaomi can handle up to 20V. So for example my laptop can't charge from it (even slowly). What is unfortunate with these "common" powerbanks - if any appliance is plugged into the powerbank while charging, the fast charging (9-12V) is dropped to the usual slow charging (5V). Moreover, the output voltage is low (there is no regulated 5V, but only the USB output connects directly to the input port, which is still loaded by the actual charging of the powerbank). The lower voltage causes a lot of things to either not want to charge at all or charge terribly slowly. it's faster to charge the power bank and when it's charged to swap the cable to your mobile than to have it plugged together like this.
If more than one appliance is plugged in during normal operation, the fast charging also immediately drops to the classic 5V.
Purchased 10/2025 with alzadny discount for 520kč
Very good price/performance ratio
Aluminum body looks betel-like
Slow charging (only 18W) and outputs only around 20W
It gets quite hot - probably lower efficiency of the internal converter than for example xiaomi
When charging the power bank and plugging the appliance into USB, the fast charging is cancelled and the output voltage is low
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Jiří, Brno
Rated 02/10/2025, variant AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) black
Verified purchase
will also charge a Mac
the weight, but that was counted on
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František, Plzeň 3
Rated 13/01/2026, variant AlzaPower Metal Gen2 10000mAh Power Delivery (22,5W) silver
Verified purchase - review from a price comparison website
Satisfied
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Martin, Ostrava
Rated 13/01/2026, variant AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) silver
Verified purchase - review from a price comparison website
Unfortunately I bought a defective piece, it charges for a while and then shuts down. I'll file a complaint.
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Tomáš, Brno
Rated 05/01/2026, variant AlzaPower Metal Gen2 10000mAh Power Delivery (22,5W) silver
Verified purchase
small
nothing
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Customer, Březí
Rated 29/12/2025, variant AlzaPower Metal Gen2 10000mAh Power Delivery (22,5W) silver
Verified purchase
it's a power bank
is damaged
the cover of the power bank is bulging and the power bank is more of a sphere than an oval
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Karel, Smiřice
Rated 20/12/2025, variant AlzaPower Metal Gen2 20000mAh Power Delivery (22,5W) silver
Verified purchase - review from a price comparison website
Sizes
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11 - 20 from 25
P-DC1-WEB05
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