Exact record: A1259, UK Black Stone listing. Evidence: first-party model-specific material checked 2026-10-11. Manufacturer specifications are attributed; Olive Branch has not conducted a hands-on test.
Quick Verdict and source facts
A1259 puts a built-in USB-C lead on a 10,000 mAh power bank and gives a second USB-C port plus USB-A. The UK specification lists up to 30 W for either USB-C output individually, but 24 W total when considering the device’s output ceiling; do not describe it as supplying 30 W to multiple devices simultaneously. It also lists 30 W maximum USB-C recharging input.
Pros from documentation
fewer loose cables and three physical output paths.
Constraints and limitations
the attached cable is an integral wear point, and nominal battery capacity is not delivered phone capacity. Device protocol, cable condition and thermal conditions affect charging; no charge test was run.
Final Verdict
a compact option for one principal USB-C device and occasional extras, with the 24 W shared cap kept visible. UK A1259 specifications.
Primary source
https://www.anker.com/uk/products/a1259-built-in-cable-power-bank-10000mah
Testing Status: Desk Research Only
Evidence Grade: Needs editor verification.
Last Verified: 10/11/2026
Quick Verdict
A1259 puts a built-in USB-C lead on a 10,000 mAh power bank and gives a second USB-C port plus USB-A. The UK specification lists up to 30 W for either USB-C output individually, but 24 W total when considering the device’s output ceiling; do not describe it as supplying 30 W to multiple devices simultaneously. It also lists 30 W maximum USB-C recharging input.
Key Product Facts
| Brand | Anker |
|---|---|
| Manufacturer | Needs editor verification. |
| Model or SKU | A1259, UK Black Stone listing |
| Markets Sold | Needs editor verification. |
| Official Product Page | Visit official source |
Specifications and Compliance
Technical Specifications
10,000 mAh nominal capacity; integrated USB-C cable; 30 W maximum on cable or USB-C port individually; USB-A 22.5 W maximum; 24 W maximum total listed output; 215 g
Pros
fewer loose cables and three physical output paths.
Cons
the attached cable is an integral wear point, and nominal battery capacity is not delivered phone capacity. Device protocol, cable condition and thermal conditions affect charging; no charge test was run.
Final Verdict
a compact option for one principal USB-C device and occasional extras, with the 24 W shared cap kept visible. UK A1259 specifications.
Evidence Sources
https://www.anker.com/about-us | https://www.anker.com/uk/products/a1259-built-in-cable-power-bank-10000mah
Editorial Transparency
| Reviewed By | Needs editor verification. |
|---|---|
| Reviewer Credentials | Needs editor verification. |
| Commercial Relationship | Needs editor verification. |
| Product Provided by Brand | Needs editor verification. |