Home/iPhone/Power Banks/16800mAh Magnetic Power Bank
This is a mid-size battery with a genuinely useful format: a magnetic wireless face for cable-free iPhone top-ups, plus built-in cables for everything else, all for around $20. Owners who get a good unit like it. The 3.5-star average is the warning attached.
Reviewed by the Tiny Tech Box team · Not a hands-on test — written from the manufacturer’s published specs, the live Amazon US listing and owner reviews · Last checked August 26, 2026
Version reviewed: 16800mAh Magnetic Power Bank with built-in cables for iPhone · ASIN B0FC5MLJLY · Amazon US listing · no separate manufacturer model number is printed on the listing.
One-sentence verdict: Worth it if you want a mid-size battery with built-in cables and a magnetic face for around $20 and can accept a mixed reliability record — skip it if you want a proven, warranty-backed bank or fast, efficient charging.
A magnetic wireless face plus built-in cables — the 3.5-star average is the caveat.
Image source: Amazon.com
| Best for | People who want a mid-size battery with built-in cables and a magnetic wireless face for around $20, and can accept a mixed reliability record. |
| Not ideal for | Anyone who wants a proven, warranty-backed bank, or fast, efficient charging. |
| Current price | $19.99 on Amazon |
| Price checked | August 26, 2026 |
| Version reviewed | 16800mAh magnetic power bank · built-in cables · ASIN B0FC5MLJLY · Amazon US |
A compact slab with a magnetic wireless face on one side and two short cables that tuck into channels on the body, plus a USB port. The all-in-one format is well thought out for a go-bag. Build quality is the unknown — the mixed rating suggests it is not consistent from unit to unit.
Snap it to the back of a MagSafe iPhone for wireless charging, or pull out a built-in cable for a wired connection. Recharge it through a cable or the USB port.
Usable capacity, wireless and wired speed, heat and hold are the measures. Hold is reported as good. Wired speed via the built-in cables is basic. Wireless is 7.5W to an iPhone, with conversion losses. Usable capacity is unverified and likely below the 16,800mAh label. Heat is not documented.
Works with:
Not compatible:
The mixed 3.5-star rating points to inconsistent reliability, and there is no warranty or brand support to fall back on.
At $19.99 on Amazon (checked August 26, 2026), it is cheap for a mid-size magnetic bank with built-in cables.
The value depends on getting a good unit, and the 3.5-star average says that is less certain than with a branded bank. If it works, it is a lot of convenience for $20. If it does not, there is no recourse. A branded Anker or TORRAS magnetic bank costs more but removes the gamble. We would call it a fair buy under about $16.
3.5 ★ from 689 Amazon ratings · price & rating checked August 26, 2026
Price and availability may change after the date shown.
| Product | Best for | Key advantage | Main drawback | Price |
|---|---|---|---|---|
| 16800mAh Magnetic Power Bank (this bank) | A cheap magnetic bank with built-in cables | All-in-one format for ~$20 | 3.5-star record; unverified capacity; no warranty | $19.99 |
| TORRAS MiniMag 10,000mAh Magnetic | A slim branded magnetic bank | Genuinely slim, firm magnet, warranty | Less capacity; costs more | $44.98 |
| Anker 10,000mAh 30W Power Bank | A proven wired everyday bank | Honest capacity, 30W, built-in cable, warranty | Not magnetic | $29.99 |
A branded magnetic bank like the TORRAS MiniMag costs more but removes the reliability gamble. If you do not need the magnet, the Anker 10K is a proven wired option. Prices are Amazon figures from August 26, 2026.
The 16800mAh Magnetic Power Bank has a genuinely useful format: a magnetic wireless face for cable-free iPhone top-ups plus built-in cables for everything else, all for around $20. Owners who get a good unit are happy with it.
The 3.5-star average is the reason for caution. It says a meaningful share of buyers had a worse experience than the upbeat review summary implies, the capacity is unverified and likely inflated, and there is no warranty. Its 3.4 score reflects a convenient format on an inconsistent product. A branded magnetic bank costs more but takes the gamble out.
| Category | Score |
|---|---|
| Design — convenient all-in-one magnetic and built-in-cable format | 3.5 / 5 |
| Value — cheap for the format, if you get a good unit | 3.5 / 5 |
| Performance — 7.5W wireless, basic wired; capacity unverified | 3.5 / 5 |
| Build & Durability — 3.5-star record points to inconsistency; no warranty | 3 / 5 |
| Compatibility & Ease of Use — magnetic and built-in cables; needs a magnet or ring for wireless | 3.5 / 5 |
| Overall | 3.4 / 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.
| Brand / line | Generic — 16800mAh magnetic power bank with built-in cables |
| Advertised capacity | 16,800mAh (usable figure likely lower; not independently verified) |
| Charging | Magnetic wireless face plus two built-in cables and a USB port |
| Wireless output | Nominal 15W; 7.5W to an iPhone |
| Attachment | Magnetic (MagSafe-compatible) for iPhones |
| Recharge | Via a built-in cable or USB port from a wall adapter |
| Wireless charging (in) | N/A |
| Weight | N/A |
| Colors | Black / white |
| Warranty | N/A |
| ASIN | B0FC5MLJLY |
| Manufacturer | N/A (unbranded) |
This is an unbranded, low-information listing. “N/A” means the value is not stated. The advertised capacity is not independently verified.
About 7.5W to an iPhone, with the usual wireless conversion losses. Use a built-in cable for faster charging.
It is not independently verified, and unbranded banks in this segment usually deliver less than the label.
A meaningful share of buyers had a worse experience — early failure or lower-than-expected performance. The star average weighs those in.
Only via a stick-on magnet ring for wireless, or the built-in cables for wired charging.
No warranty is stated and there is no brand behind the listing.
A branded bank (TORRAS MiniMag, Anker) costs more but removes the reliability gamble. This is the budget bet.
Every pick links to its full five-aspect review.
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Sources: Amazon product listing (ASIN B0FC5MLJLY), read Aug 26, 2026 · listing description for capacity, magnetic and built-in-cable claims. This is an unbranded, low-information listing; the rating, price and buyer feedback are from the live Amazon listing on the date shown.
Disclosure: As an Amazon Associate, Tiny Tech Box earns from qualifying purchases. Recommendations are based on our own research and scoring, described in full on our How We Score page.