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In this guide
Anker's Nano Power Bank with a built-in cable is the company's answer to the person who owns three power banks and never has a lead for any of them. Model A1259 carries 10,000 mAh, a short USB-C cable that folds out of the top and doubles as the recharging input, plus a C-type socket and a USB-A socket on the end. A small color display shows the remaining percentage. Anker lists it at $49.99 in Black Stone and $54.99 in Natural Green, Shell White, Ice Lake Blue and Lilac Purple.
The pitch is convenience, and the published tables back it up on the single-device case: 30 W on any one connection, in either direction. Where it gets less generous is when two things are plugged in, and where it gets expensive is next to Anker's own Zolo 10K, which has the same capacity, the same 30 W attached cable and a $29.99 price. This review works through what the A1259 adds for the difference.
Our verdict
A fully specified 10K bank whose 24 W combined cap and $49.99 price make it a phone-and-earbuds tool, not a laptop one; buy it for the three connections and the screen, or buy the Zolo 10K and keep $20.
- A good fit for
- A phone user who wants to leave every cable at home, top up a second device from the USB-A socket, and read a percentage instead of guessing from four LEDs.
- We would skip it if
- You want to charge a laptop, you routinely charge two devices at full speed together, or a built-in cable that cannot be replaced worries you more than a forgotten one.
Reasons to consider it
- One attached cable handles charging out and recharging in at 30 W, with a second USB-C socket and a USB-A socket as backups
- Full PD and PPS tables published per connection, including 3 to 11 V PPS for Samsung phones
- Color display with a percentage readout, 215 g, and a casing Anker says is 80% post-consumer recycled plastic
The compromises
- Total output is capped at 24 W, so two devices at once share less than one device gets alone
- No watt-hour rating, usable-capacity estimate or full recharge time is published for this model
- Black Stone is $49.99 but the other four colors are $54.99, and the Zolo 10K with the same 30 W cable is $29.99
What we have not verified: The bank was not charged or drained here; cable durability, real delivered capacity, heat under 30 W load and whether it is accepted as carry-on were not assessed, since Anker publishes not one of those figures for the A1259.
The things in this guide
A closer look at the products, who they may suit, and what to check before buying.
Nano Power Bank · 10K, 30W, Built-In Cable, Black Stone
A 30 W attached lead that also recharges the bank, two spare sockets for a second device, a percentage display and 215 g, all covered by a 24-month warranty stated on the page.
Before you buy: Combined output tops out at 24 W, Anker gives no watt-hour or usable-capacity figure for this model, and the Zolo 10K covers the basic job for $20 less.
Price checked September 11, 2026. Retailer prices can change.Three ways to plug in, 30 W each, 24 W together
The A1259 has an attached Type-C lead, a spare Type-C socket and a USB-A socket. Anker's table gives each Type-C path the same output ladder up to 20 V at 1.5 A, which is the 30 W ceiling, and adds a PPS range of 3 to 11 V at up to 2.72 A for phones that negotiate it. The USB-A socket is rated to 22.5 W and speaks QC, SCP, FCP and AFC, so an older Android phone or a pair of earbuds on a USB-A lead still gets a fast handshake.
The number that matters for two-device use is the total: 24 W, expressed as 5 V at 4.8 A. Plug a phone into the cable and earbuds into the USB-A socket and neither is getting its full rate; plug two phones in and each is closer to a 12 W wall cube than a fast charger. Fine for a bag bank, and it rules out the laptop use Anker mentions in the feature bullet, since 30 W is a trickle for anything larger than a small tablet.
10,000 mAh in, an unknown amount out
Anker publishes 10,000 mAh and nothing more specific for the A1259: no watt-hour rating, no usable-capacity estimate, no cycle count. The same brand's FAQ for the Zolo 10K puts real delivered charge at 5,500 to 7,000 mAh for a 10,000 mAh bank once conversion losses are counted, and offers a rule of thumb of capacity times 0.65 divided by the phone battery. There is no reason the physics differs for the A1259, so plan on roughly one and a half fills of a current iPhone, not two.
Recharging goes in through the attached cable or the spare C socket at up to 30 W, and Anker's own figure is 50% in 45 minutes from a suitable charger. A full recharge time is not stated for this model; the Zolo FAQ quotes about 2.5 hours from a 20 W charger, and a 30 W source should do a little better. The feature copy pairs that with a 50% iPhone 14 charge in 30 minutes, which is a claim about the phone's charging curve as much as the bank.
Pocket dimensions, a percentage readout and a recycled shell
The body measures 4.09 by 2.06 by 1.02 inches, or 104 by 52.3 by 26 mm, and weighs 215 g, which Anker rounds to 7.58 oz. It is a thick pocket rectangle, not a slab, and the attached cable stows along the top edge where it also forms a small carry loop Anker describes as a built-in handle. Five colors are offered; only Black Stone is at the $49.99 price, and it was also the color with the lowest stock count on the day this was read.
The display is a color screen that reports the remaining percentage and charging status, a genuine step up from the four white dots on cheaper banks when working out if it needs to go on the charger tonight. The casing is described as 80% post-consumer recycled plastic. Anker publishes no bend rating for the attached cable on this page and no ingress rating for the bank, so neither is assumed here.
24 months on the page, 18 months in the policy table
The What You Get line on the A1259 page promises a 24-month warranty. Anker's policy page lists 24 months only for its GaNPrime, Prime and MagGo power banks and 18 months for other power banks, then says the page for the model or the invoice governs where a model is not named. The A1259 is not named, so the 24 months on the page should stand, but keep the order receipt, because the claim process asks for an order number or dated receipt and the serial number.
Returns for any reason are accepted during the month after purchase on undamaged items, with the buyer paying return shipping unless the fault is a defect. Replacements under warranty are normally factory-refurbished units, and the exclusions list is explicit that reduced battery capacity from normal aging is not a defect. For a product whose whole value is stored charge, that clause is the one to read twice.
What $20 over the Zolo 10K actually buys
Anker's Zolo Power Bank 10K is $29.99, has the same 10,000 mAh, the same 30 W attached Type-C lead and a display of its own. The Zolo cable is quoted at 5.4 inches; Anker gives no length for the A1259's. On the single-phone job the two are hard to separate on paper, and the Zolo has an FAQ that answers the capacity and recharge questions the A1259 page leaves open.
The A1259 adds a USB-A socket, a second USB-C socket, the recycled shell, the color choice and the longer stated warranty. If you regularly charge earbuds or a watch on a USB-A lead alongside a phone, the extra sockets earn the price; the 24 W total means they earn it as convenience, not as speed. If the bank only ever meets one phone, the Zolo is the same tool at 60% of the cost.
Skip it for laptops, for two fast devices, or if $30 does the job
Nobody should buy this expecting to run a laptop from it. Thirty watts on a good day and 24 W shared is tablet territory, and Anker's own lineup has 45 W and 65 W banks for people who need more. It is equally the wrong choice for a user needing two phones charged fast at the same time, because the total budget will not allow it.
The stronger reason to hesitate is internal to Anker. The Zolo 10K is a near-identical answer to the same problem at $29.99, and the A1259's advantages are a spare socket or two and a screen you might never look at. If those do not describe a need you already have, the cheaper bank is the better purchase. If they do, the A1259 is a tidy, well-documented way to get them.
How we put this together
Built from the product pages and listings below, without test scores or results we have not measured. Specifications and prices change, so check the original page for the exact model, current price, delivery, and returns.
- Anker: Nano Power Bank A1259 (30W, built-in cable) product page (opens in a new tab)
- Anker: Refund and warranty policy (opens in a new tab)
- Anker: Zolo Power Bank (10K, 30W) product page (opens in a new tab)
