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4Rank 04 of 10 · Power Banks

Xtorm Powerbank 20.000 mAh FS5201

The most-reviewed bank in our Coolblue sample, 8.9/10 from 51 owners. Two bidirectional 35 W USB-C ports, an 18 W USB-A port and a percentage display, at 400 g.

Official storeSee the full ranking

Author: Sylwester Szubiński Updated

Xtorm Powerbank 20.000 mAh FS5201 — product photo 6.9BPR score
acceptable
  1. €64Price
  2. Not published (20,000 mAh only)Energy in Wh and rated capacity at 5 V
  3. 4 of 10in Power Banks
  4. 6.9BPR score 0–10

Review

What this product is

Written after the analysis, from the same sources the score is built on: the manufacturer's documentation, available studies and verified owner feedback.

Xtorm is a Dutch accessories brand, and the FS5201 is a conservative 20,000 mAh bank aimed at phones and tablets rather than laptops. Coolblue lists two USB-C ports, each 35 W with USB Power Delivery 3.0 and usable as input or output, plus a USB-A port at 18 W with Quick Charge 3.0. The total output is 35 W.

Its strongest card is owner feedback: 8.9 out of 10 from 51 reviews on Coolblue, with sub-scores of 9.3 for capacity and 9.3 for build quality. That is the broadest review base we saw for any non-Samsung model here. Weight is 400 g and size 14.3 × 7.7 × 2.8 cm; a display shows remaining charge as a percentage.

The price in the Coolblue category listing was €64.00, which is high for 35 W when the Samsung offers 45 W for about half that.

What is missing: Xtorm's own website returned an empty page to our fetch, so the data here is Coolblue's. No watt-hour figure, no rated capacity at 5 V and no PPS statement were shown. 35 W is too little for most laptops. We found no independent lab test.

Technical data

Specification

Figures from the manufacturer's documentation, verified against available outside sources. Values we could not confirm are marked as declared.

Manufacturer code
FS5201
Capacity
20,000 mAh
Cell type
Lithium-polymer
Total output
35 W
USB-C (×2)
35 W each, USB PD 3.0, input/output
USB-A
18 W, Quick Charge 3.0
Weight
400 g
Dimensions
14.3 × 7.7 × 2.8 cm
Display
Battery percentage
Price seen
€64.00, Coolblue

Component scores

Where the score
comes from.

Four components, equal weight, each on a 0–10 scale and each resting on a named source. The overall score is their mean — the full procedure is in the methodology.

  1. Composition and specification6.8

    Declared composition and specification: active ingredients and their concentrations, energy classes, standards, technical parameters — and what the manufacturer leaves unsaid.

  2. Evidence and studies5.0

    Verification of the manufacturer's claims against outside sources: laboratory reports, industry testing, safety data sheets, certificates and regulatory decisions.

  3. Owner feedback8.5

    Analysis of verified reviews written after extended use, together with recurring fault reports for the model or series.

  4. Cost and value7.2

    Price set against what the product actually delivers, plus costs incurred later — consumables, energy, servicing, subscriptions — over the lifespan typical for the category.

Overall score = mean of four component scoresSignificance threshold: ±0.15 pt

What we liked

  • 8.9/10 from 51 Coolblue reviews
  • Two bidirectional 35 W USB-C ports
  • Percentage display
  • 400 g and 2.8 cm thick
  • Minimum two-year warranty via Coolblue

Worth knowing

  • Wh not published
  • 35 W total is low for laptops
  • €64.00 is expensive for the output
  • Manufacturer page would not load for us
6.9 Acceptable Rank 04 of 10 · Power Banks
Official storeSee the full ranking

Comparison

How it compares
within the category

All values come from the same analysis and are comparable only within the category Power Banks.

Comparison with the category leaders
ProductScoreEnergy in Wh and rated capacity at 5 VPrice
Battery Pack 20,000 mAh 45W EB-P4520Top score 7.774 Wh at 14.8 V (four cells in series) — published in the retailer datasheet; rated capacity at 5 V not published €34
Powerbank 20.000 mAh FS5201This product 6.9Not published (20,000 mAh only) €64
Category average10 products analysed 6.7——

FAQ

Frequently asked questions

Can I recharge the Xtorm FS5201 from either USB-C port?

Yes. Coolblue lists both USB-C ports as input and output, each at 35 W.

Will it charge a MacBook?

A MacBook Air will accept 35 W, but larger laptops will charge slowly; the bank's total output is 35 W.

From the same ranking

Other products in Power Banks.

The same protocol, the same key parameter, the same set of sources.

  1. No. 017.7/ 10

    Battery Pack 20,000 mAh 45W EB-P4520

    The only bank in this list whose energy in watt-hours, cell voltage and weight all appear in…

    Energy in Wh and rated capacity at 5 V: 74 Wh at 14.8 V (four cells in series) — published in the retailer datasheet; rated capacity at 5 V not published
  2. No. 027.2/ 10

    Nexode Power Bank 20000mAh 100W (25188)

    The most completely documented bank here: UGREEN publishes 72 Wh, a rated capacity of 11,300…

    Energy in Wh and rated capacity at 5 V: 72 Wh; rated 11,300 mAh at 5 V — both published by UGREEN
  3. No. 037.1/ 10

    Power Bank 20.000 mAh 45 W (BBPB4520PR)

    Coolblue's own-brand bank is the lightest 20,000 mAh model we could document at 314 g, with…

    Energy in Wh and rated capacity at 5 V: Not published (20,000 mAh only); weight 314 g published by Coolblue
  4. No. 056.6/ 10

    Powerbank F20000 PD (7332054)

    The cheapest bank here at €28.66, with a clearly stated input (5 V 3 A / 9 V 2 A, 18 W max)…

    Energy in Wh and rated capacity at 5 V: Not published (20,000 mAh only)

Principles

The manufacturer makes claims.
We check what the evidence says.

Every ranking follows the same protocol: an analysis of composition and specification, verification of claims against available studies, a review of verified owner feedback, and an assessment of price against what the product delivers.

Read the methodology Browse the archive

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