Image: Anker · source
Anker 313 Power Bank (PowerCore 10K)
Anker · Budget
The Anker 313 Power Bank (PowerCore 10K, model A1229) is a 10,000 mAh portable charger with one USB-A port and one USB-C port, plus a Micro-USB port.
Image: Anker · source
Anker Prime Power Bank (20,100mAh, 220W, 3-Port)
Anker · Premium
The Anker Prime Power Bank (model A110B) is a 20,100 mAh battery with two USB-C ports and one USB-A port, rated at 220 W total output and 140 W on a single USB-C port.
Check price on Amazon (affiliate link, opens Amazon in a new tab)As an Amazon Associate I earn from qualifying purchases. How we pick our gear
We have not tested it ourselves: strengths and weaknesses below come from the tests cited.
Why Railfans Carry It
A long day of photographing or logging trains drains phones, cameras and tablets, and this is a battery sized for several devices at once: Anker lists 220 W of total output shared across its three ports, and PowerIQ 4.0 shifts power toward the device that needs it. USB-C input of up to 100 W means the bank itself is meant to refill quickly between trips. For a journey, Anker labels the bank flight-approved, although its product page gives no airline details, so check your own airline's rule on power banks. Anker also offers an app, reached over Bluetooth, that shows charge status and how power is split between ports.
In the Field
Anker lists the USB-C output at up to 140 W, the USB-A output at up to 22.5 W and the total at 220 W; USB-C input accepts up to 100 W, and a separate charging base (sold separately) can also feed it. The bank measures 44 x 50 x 147 mm and weighs 510 g. Anker is candid about real-world capacity: power conversion loses about 30 to 45 percent of the energy, so a full 20,100 mAh bank provides about 11,250 mAh to devices. Its FAQ also says that when you charge devices while recharging the bank, the output is about 70 to 80 percent of the input, and that a 5 A, 100 W-capable cable is needed to reach maximum recharge power. ActiveShield 4.0 monitors temperature, which Anker says it does over 10 million times a day. Anker lists fast-charging support including Samsung Fast Charging 2.0 and 40 W maximum for the iPhone 17 series.
Strengths and Weaknesses
Strengths
- 220 W total output across two USB-C ports and one USB-A port, with 140 W on a single USB-C port
- 100 W USB-C input for recharging the bank
- Anker app over Bluetooth showing charge status and port power distribution
- Labelled flight-approved by Anker
- Temperature monitoring with ActiveShield 4.0
Weaknesses
- At 510 g it is a substantial weight to add to a camera bag
- Anker states that a full bank delivers about 11,250 mAh to devices after conversion losses
- Charging devices while recharging the bank limits output to about 70 to 80 percent of the input
- A hot battery will not begin recharging until it cools, and full recharge power needs a 5 A, 100 W-capable cable
Key Specifications
| Specification | Value |
|---|---|
| Model | A110B |
| Weight | 510 g (1.12 lb) |
| Capacity | 20,100 mAh |
| Dimensions | 44 x 50 x 147 mm (1.73 x 1.99 x 5.79 in) |
| USB-C input | Up to 100 W |
| Technologies | PowerIQ 4.0, ActiveShield 4.0, Bluetooth app control |
| Total output | 220 W max |
| USB-A output | Up to 22.5 W |
| USB-C output | Up to 140 W |
Who It’s For
A railfan or photographer who travels with a laptop or several devices and wants one bank to cover them, and who accepts carrying more weight than a pocket-size battery.
Alternatives
The Anker Nano Power Bank (10K, 45W, built-in retractable USB-C cable) and the INIU Pocket Rocket P50 (10000 mAh), both already in this catalogue, are smaller 10,000 mAh banks for a phone-only kit.
Image: Anker · source
Anker Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable)
Anker · Mid-range
A 10,000 mAh power bank with a 45 W USB-C output and a retractable USB-C cable built into the body, so a phone can be charged without carrying a separate lead.
Expert pick · TechRadar, Oct 2025
Image: Elecom · source
Elecom NESTOUT Rugged Power Bank (15,000mAh)
Elecom · Mid-range
A rounded, cushioned 15,000mAh power bank from Elecom’s NESTOUT outdoor line, built to IP67-equivalent dust and water protection and drop-tested for days spent outside.
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Compare all power banks & batteries.