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YELOMIN 38800mAh Solar Power Bank Review: Big Battery, Token Solar

3.0 · Average
TINY TECH BOX SCORE

Best understood as a $17.99 rugged camp battery with a flashlight and a carabiner. A working unit gives you a lot of USB power for the money and the shell survives a trip. The solar panel is a backup trickle, and the 38,800mAh label isn’t the real usable figure.

Reviewed by the Tiny Tech Box team · Not a hands-on test — written from YELOMIN’s published specs, the live Amazon US listing and owner reviews · Last checked August 26, 2026

Version reviewed: YELOMIN 38800mAh Solar Power Bank, Portable Charger with USB-C, dual LED flashlight · ASIN B0FWCG53DH · Amazon US listing · no separate manufacturer model number is printed on the listing.

One-sentence verdict: Worth it as a large, cheap battery with a flashlight for camping or travel if you treat the solar panel as a backup trickle only — skip it if you expect to recharge it from the sun or the advertised capacity to be real.

Product photos

Rugged YELOMIN solar power bank with a small solar panel on the front, a carabiner and dual LED flashlights.

Treat the solar panel as an emergency trickle, not a charging method.

Image source: Amazon.com

Review summary

3.0 / 5
Average
Best forCampers and travellers who want a large, cheap battery with a flashlight and a carabiner, and understand the solar panel is a backup trickle only.
Not ideal forAnyone expecting to recharge it from the sun, or expecting the advertised capacity to be real.
Current price$17.99 on Amazon
Price checkedSep 17, 2026
Version reviewedYELOMIN 38800mAh solar power bank · ASIN B0FWCG53DH · Amazon US

Pros and cons

Pros
  • It is a large, cheap battery — even discounting the advertised capacity, there is a lot of it for $17.99.
  • It charges two devices at once over USB-C and USB-A.
  • The dual flashlight and carabiner are genuinely handy for camping.
  • The rugged shell shrugs off a campsite drop.
Cons
  • The advertised 38,800mAh is not the usable figure — owners who test it report considerably less.
  • Solar charging is close to useless as a primary method — several owners report it ‘doesn’t work in the sun’ and the panel is too small to matter.
  • Reliability is inconsistent — some units arrive dead or fail early.
  • No brand support and no warranty.

The review

Design and build quality

A rugged plastic slab with a small solar cell on the face, two output ports, twin flashlights and a carabiner loop. It looks and feels built for a backpack, and the shell takes knocks. Nothing about the electronics is documented, and the capacity claim is inflated in the way this whole product segment inflates it.

Setup and ease of use

Charge it fully from a wall adapter over USB-C before a trip — do not rely on the sun. Then plug in your devices.

Performance

For a power bank, performance is usable capacity, charge speed, heat, recharge time and — here — solar input. Usable capacity is materially below the label. Charge speed is basic. Solar input is a slow trickle at best and, by many owner accounts, effectively nothing. Recharge from a wall adapter takes several hours because the real battery is still large.

Compatibility

Works with:

Not compatible:

Durability and warranty

The shell is tough; the electronics are a lottery. Some units are fine for a long time, some arrive dead. There is no warranty and no meaningful brand support.

Price and value

At $17.99 on Amazon (price checked Sep 17, 2026), it is priced as a big cheap battery, and on that basis it can be fine.

Judge it as a $17.99 USB battery with a flashlight, not as a 38,800mAh solar charger. If a working unit does 20,000–25,000mAh of real capacity, that is still reasonable value at the price. If you get a dead one, there is no recourse. We would call it a fair buy under about $15, with expectations set low.

YELOMIN 38800mAh Solar Power Bank
$17.99

3.9 ★ from 1,424 Amazon ratings · price & rating checked August 26, 2026

Price and availability may change after the date shown.

Compared with alternatives

ProductBest forKey advantageMain drawbackPrice
YELOMIN 38800mAh Solar Power Bank (this bank)A big cheap camping battery with a flashlightLots of capacity for $17.99; rugged; flashlightInflated capacity; token solar; no warranty$17.99
Anker 10,000mAh 30W Power BankA smaller battery you can trustHonest capacity, 30W, 18-month warrantyLess capacity; no flashlight or solar$29.99
UGREEN Nexode 20,000mAh 45WReal high capacity with a displayVerified capacity, 45W, health readoutNo flashlight; costs more$34.98

If you want capacity you can trust, an Anker or UGREEN bank states honest numbers and carries a warranty. This YELOMIN is for people who want a cheap, big, rugged camp battery and treat the solar panel as decoration. Prices are Amazon figures from August 26, 2026.

Who should buy it?

Buy it if
  • You want a large, cheap, rugged battery for camping with a flashlight.
  • You will charge it fully from the wall before every trip.
  • You are fine with the real capacity being well under the label.
Skip it if
  • You expect to recharge it from the sun.
  • You need the advertised capacity to be accurate.
  • You want a warranty or brand support.

Final verdict

The YELOMIN 38800mAh Solar Power Bank is best understood as a $17.99 rugged camp battery with a flashlight and a carabiner. On that basis, a working unit gives you a lot of USB power for the money, and the shell survives a trip.

Do not buy it for the two things in the name. The 38,800mAh is inflated — owner testing lands well below it — and the solar panel is a token trickle that many owners say does nothing useful. Reliability is a lottery with no warranty behind it. Its 3.0 score reflects a product that is fine as a cheap battery and misleading as a solar charger.

Score breakdown

CategoryScore
Design — rugged, flashlight and carabiner; token solar cell3.5 / 5
Value — cheap for the real capacity, if you get a working unit3 / 5
Performance — usable capacity below the label; solar is effectively nothing2.5 / 5
Build & Durability — tough shell, lottery electronics, no warranty2.5 / 5
Compatibility & Ease of Use — two USB outputs; must be wall-charged, not solar-charged3.5 / 5
Overall3.0 / 5 · Average

Each aspect is scored from 1 to 5. The overall score is the average of the five, shown to one decimal place. Verdict bands: 4.5–5.0 Hell Yeah, 3.5–4.4 Would Buy, 2.5–3.4 Average, 1.0–2.4 Trash.

Specification

Brand / lineYELOMIN — solar power bank
Advertised capacity38,800mAh (owner testing suggests the usable figure is materially lower)
PortsUSB-C and USB-A output; charges two devices at once
Solar panelSmall onboard panel — an emergency trickle, not a practical recharge method
RechargeVia USB-C from a wall adapter (several hours)
ExtrasDual LED flashlight, carabiner, rugged shell
Wireless chargingN/A (this model does not charge wirelessly)
WeightN/A
ColorsOrange / black
WarrantyN/A
ASINB0FWCG53DH
ManufacturerYELOMIN

This is a low-information listing. “N/A” means the value is not stated. Owner testing suggests the real usable capacity is well below the advertised 38,800mAh.

Frequently asked questions

Not practically. The onboard panel is a slow trickle at best, and many owners report it doing nothing useful. Charge it from a wall adapter.

No. Owners who test it report a usable figure well below the label, which is typical for this product segment.

Depends on the real capacity of your unit, but plan for meaningfully fewer than the 38,800mAh number implies.

No. This model is wired only, via USB-C and USB-A.

No warranty is stated and there is no meaningful brand support.

Only as a cheap, big, rugged camp battery with a flashlight — not as a solar charger, and not if you need accurate capacity or a warranty.

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Price checked Sep 17, 2026

Prices and availability are accurate as of the date shown and are subject to change. The price and availability displayed on Amazon at the time of purchase will apply.

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Sources: Amazon product listing (ASIN B0FWCG53DH), read Aug 26, 2026 · listing description for capacity, ports and solar claims. This is a low-information listing; the rating, price and buyer feedback are from the live Amazon listing on the date shown.