Anker Prime 27K 250W Power Bank Review (2026): Laptop-Grade Power

Repeat

Serious laptop-level power in a travel-friendly capacity

Android Central used the Prime for four months with phones, tablets and a Steam Deck, reporting faultless operation and strong charging performance. Anker rates it at 27,650mAh with up to 250W combined output, two USB-C ports and one USB-A port. The downsides are its weight, premium cost and the fact that the magnetic charging base is sold separately. For people who regularly power a laptop and several devices away from an outlet, it looks like a repeat-worthy buy.

Check current price on Amazon → Prices and availability change often, so we don't list them here.

Buy it again if you…

charge a USB-C laptop, tablet and phone while travelling
need high output and clear real-time charging information
want one large battery instead of carrying several smaller banks

Skip it if you…

only need occasional phone top-ups
want a light pocket-sized power bank
expect the magnetic charging base to be included in the standard package

The Anker Prime 27,650mAh 250W (model A1340) is a high-capacity portable battery with two USB-C ports, one USB-A port and a display showing charging information. It is designed for people who need to power laptops and multiple devices, not just top up a phone.

We rely on one detailed hands-on review for real-world performance and Anker's own documentation for specifications. The four-month test is useful, but it is not the same as a large multi-year reliability survey.

What owners say, at a glance

27,650 mAhbattery capacityAnker

250 Wmaximum combined output across portsAnker

4 monthsfaultless daily-use period reported by testerAndroid Central

Laptop charging

Strong expert praise

Multi-device output

Up to three devices

Display and controls

Useful real-time data

Portability

Large and relatively heavy

Long-term reliability evidence

Positive test, limited sample

Bars show our editorial summary of how consistently owners praise or complain about each area across all sources — not a lab measurement.

The key specs

Model	Anker Prime A1340
Capacity	27,650mAh (seven 3,950mAh cells)
Ports	2 × USB-C and 1 × USB-A
Maximum output	250W combined; up to 140W from one USB-C port under supported conditions
Display	LCD with battery, input/output and charging-time information
Extra	Magnetic pogo-pin connection for a separately sold charging base

What the reviewer likes

Enough power for demanding devices.Android Central used it with several phones, tablets and a Steam Deck, and praised its ability to charge compatible laptops through USB-C PD 3.1.

Three-device charging.Two USB-C ports and one USB-A port let it charge several devices at once. Anker specifies up to 250W combined output, depending on the connected devices and port combination.

The display is practical.The screen shows battery level, power flow and estimated charging information, making it easier to understand what the bank is doing.

Positive four-month reliability report.Android Central's reviewer reported faultless operation across four months of use with multiple devices. That is encouraging, although it is one reviewer's sample rather than a population-wide failure study.

What to consider before buying

It is not a small phone bank.The large capacity and high output make it a substantial device. It is best carried in a backpack or laptop bag rather than a pocket.

The charging base costs extra.The magnetic charging base can make recharging more convenient, but Android Central notes that it is sold separately.

The front can show fingerprints.The reviewer found the glossy front prone to smudging, a cosmetic issue rather than a charging problem.

Power depends on the device and cable.Maximum output is shared across ports and requires compatible charging standards, cables and devices. A laptop that cannot accept high-wattage USB-C input will not benefit from the headline maximum.

How it holds up over time

The strongest real-world evidence we found is Android Central's four-month test, during which the reviewer reported no faults while charging many different devices. We did not find a large independent multi-year reliability survey for this exact model. The verdict is therefore positive on observed reliability, but it should not be read as a guarantee about battery aging after several years.

Travel and battery safety notes

At 27,650mAh, the pack is just under the common 100Wh airline threshold when rated at nominal cell voltage. Airline rules and approval requirements can vary, so check your carrier's current policy before flying. Keep power banks in carry-on baggage, protect the ports from metal objects, and use a suitable USB-C cable and charger.

Tips from the reviewer and manufacturer

Use a compatible high-wattage USB-C charger and cable if you want to recharge the bank quickly.
Check the device's input limit before expecting 140W charging.
Use trickle-charging mode for low-power accessories such as earbuds and watches.
Compare the bundle contents if you want the magnetic charging base; it may be sold separately.

Pros and cons

What owners love

27,650mAh capacity with up to 250W combined output
Can charge compatible laptops at up to 140W from USB-C
Two USB-C ports and one USB-A port
Useful display with real-time charging information
Positive four-month hands-on reliability report

What owners complain about

Large and heavy compared with phone-focused power banks
Premium price
Magnetic charging base is an extra purchase
Maximum output requires compatible devices and cables

Other portable chargers to compare

The Prime is built for high-wattage laptop charging. These options cover smaller or more budget-conscious needs.

Model	Capacity / output	Consider it if…
Anker Prime 27K (this review)	27,650mAh / 250W	You need laptop-level power for several devices	See on Amazon
Anker 737 Power Bank Read our review	24,000mAh / 140W	You want strong laptop charging in a simpler package	See on Amazon
Anker MagGo Power Bank 10K Read our review	10,000mAh / wireless	You mainly want a compact phone top-up	See on Amazon

Need one battery for a laptop and your other devices?

Check the exact A1340 bundle, included cable, seller and airline rules before you buy.

See it on Amazon →

Frequently asked questions

Can the Anker Prime 27K charge a laptop?

Yes, it supports USB-C Power Delivery and can deliver up to 140W from a USB-C port when the laptop, cable and charging conditions support it.

Can it charge three devices at once?

Yes. It has two USB-C ports and one USB-A port. The total available output is shared and depends on which ports are in use.

Is the charging base included?

Not in every package. Android Central reported that the magnetic charging base is sold separately, so check the exact listing contents.

Can I take it on a plane?

Its rated capacity is just below 100Wh, but airline rules vary. Check your carrier's current requirements and carry power banks in cabin baggage.

Sources we analyzed

Android Central: Anker Prime 27,650mAh 250W review — four-month hands-on use, charging tests, pros and cons
Anker: Prime Power Bank (27K, 250W) — official capacity, ports and product specifications
Anker Prime A1340 Quick Start Guide — battery capacity, port output and operating modes

Figures reflect each source as of November 03, 2026 and may change. We summarize owner feedback in our own words and do not reproduce retailer reviews.