Home/iPhone/Power Banks/16800mAh Magnetic Power Bank
On paper, the format is great. This mid-size battery has a magnetic face for charging an iPhone without a cable, plus built-in cables for everything else, and it costs $19.99.
Owners who get a good one like it. The trouble is the 3.5-star average, which tells you not everyone does.
Reviewed by the Tiny Tech Box team
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 $19.99 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 $19.99, 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 | Aug 26, 2026 |
| Version reviewed | 16800mAh magnetic power bank · built-in cables · ASIN B0FC5MLJLY · Amazon US |
It’s a compact slab, with a magnetic wireless face on one side and two short cables that tuck into channels in the body, plus a USB port.
As an all-in-one for a go-bag, the format is well thought out. Build quality is the unknown, and the mixed rating suggests it varies from one unit to the next.
Snap it onto the back of a MagSafe iPhone to charge wirelessly, or pull out one of the built-in cables when you want a wired connection or need to top up something that isn’t an iPhone, and when the bank itself runs flat, recharge it through a cable or the USB port.
Owners say the magnet holds well. Wired? Basic.
Wireless runs at 7.5W to an iPhone, with the usual conversion losses, and the real capacity hasn’t been verified and is probably below the 16,800mAh on the label. Nobody documents how hot it gets, either, which on an unbranded battery that sits against your phone is worth keeping in mind.
Works with:
Not compatible:
The mixed 3.5-star rating points to inconsistent reliability. And there’s no warranty or brand support to fall back on if yours turns out to be one of the bad ones.
At $19.99, it’s cheap for a mid-size magnetic bank with cables built in.
Whether it’s good value depends on getting a good unit, and the 3.5-star average says that’s less certain than with a branded bank. If yours works, that’s a lot of convenience for $19.99. If it doesn’t, you have no recourse. A branded Anker or TORRAS magnetic bank costs more but takes the gamble away. Under about $16, we’d call it a fair buy.
3.5 ★ from 689 Amazon ratings · price checked Aug 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 $19.99 | 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 | $25.99 |
A branded magnetic bank like the TORRAS MiniMag costs more, but it removes the reliability gamble. Don’t need the magnet? The Anker 10K is a proven wired option.
Useful format, too: a magnetic face for cable-free iPhone top-ups, plus built-in cables for everything else, all for $19.99. Owners who get a good unit are happy with it.
Be careful, though. It means a meaningful share of buyers had a worse experience than the upbeat review summary implies, the capacity is unverified and probably inflated, and there’s no warranty. A branded magnetic bank costs more, but it 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 |
The overall score is the average of the five aspects above. How we score.
| 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, so use one of the built-in cables if you want faster charging.
It hasn’t been independently verified, and unbranded banks in this segment usually deliver less than the label claims.
A meaningful share of buyers had a worse experience, with early failures or lower-than-expected performance, and the star average weighs those in.
Only with a stick-on magnet ring for wireless charging, or through the built-in cables for wired charging.
No warranty is stated, and there’s no brand behind the listing.
A branded bank like the TORRAS MiniMag or an Anker costs more but removes the reliability gamble. This one is the budget bet.
Every pick links to its full five-aspect review.
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 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.