Anker 25,000mAh 165W review
Anker Power Bank 25,000mAh 165W
By Tom Calder
A big-capacity bank with 165W in total and up to 100W from each USB-C, enough to charge most USB-C laptops as well as phones. The two built-in cables mean nothing to lose from a grab bag. Like any power bank it charges USB devices only; mains appliances need a portable power station.
- Best for
- Keeping phones and a USB-C laptop going through a long power cut, with no cable to forget.
- Skip it if
- You only need to keep a phone topped up
as of 2 Nov 2026, 16:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.We earn a commission if you buy through the retailer links on this page. It doesn't change our verdict. How we make money →
Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- 25,000mAh recharges most phones several times over
- Up to 100W from USB-C, enough for most USB-C laptops
- Two built-in USB-C cables, so there's no separate cable to forget
Worth knowing
- Heavier and dearer than a phone-only 10,000mAh bank
- USB only: it won't run mains appliances
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Our review
Anker's 25K is a 595g, 25,000mAh, 90Wh power bank with two built-in USB-C cables, one retractable, plus a USB-C and a USB-A port, up to 100W from a port and 165W in total. It charges a laptop as well as phones and recharges in about two hours. It is the bank for a household, not a pocket.
What it is
Anker's specification page lists model A1695 at 25,000mAh and 90Wh, with three USB-C outputs rated up to 100W each, two of them as built-in cables, one retractable at about 70cm and one short lanyard, and a USB-A port at 33W, for 165W in total. It recharges in about two hours from a 100W USB-C charger. It has a display that shows the remaining charge and the power in and out, measures 157 by 54 by 49mm and weighs 595g. The warranty is 18 months. Black is A1695H11 and silver A1695H41.
What it will run
Ninety watt-hours is roughly six to eight full phone charges, or one full charge of a mid-sized USB-C laptop with some left for a phone, or a router and a phone for a long evening. The 100W port suits most laptops that charge over USB-C. With three or four devices connected at once the total output falls, so spread heavy loads over time. Like every power bank it is USB only; a fridge, a boiler or a CPAP machine on mains needs a portable power station.
The display is more useful than it sounds: it shows watts going out, so you can see a laptop drawing 60W and work out how long the bank will last, and it shows watts coming in, so you know a weak charger is the reason it is filling slowly. Spread the heavy loads over time rather than plugging everything in at once, and the 165W rating holds.
Looking after it
Electrical Safety First's advice is to charge power banks where you can see them, unplug once full, and stop using one that swells or cracks; our lithium battery guide covers the rest. Top it up every few months in storage. For flights the Civil Aviation Authority says power banks go in the cabin, never the hold, two per person, and must not be charged on board; at 90Wh this one is under the 100Wh line above which airline approval is needed, but it is close, so keep the Wh marking visible.
How it compares
On our power bank comparison the Anker Prime 26,250mAh is the faster, dearer sibling at 300W, and the Anker 20K 87W is the lighter one for phones and a tablet. The INIU B5 is the budget phone-only choice. The 25K's case is the built-in cables and a laptop-grade port for a sensible price.
Our verdict
Buy it if a laptop or a tablet is part of your plan for a power cut and you want one bank with its cables attached. Skip it if you only need to keep phones alive, where half the weight does the job, or if you need to power mains appliances, where no power bank will.
A researched review, built from the maker's specs, manual and UK listings; facts checked 2 Nov 2026. Sources: Anker support: specification of the Power Bank 25K 165W with built-in and retractable cables (A1695); Civil Aviation Authority: Pack Right, power banks and batteries; Electrical Safety First: power bank safety; UK Government Be Ready: emergency kit checklist.
Who shouldn't buy this
You only need to keep a phone topped up. A 10,000mAh bank costs less and weighs far less, and for mains appliances you need a power station instead.
Key specs
| Capacity | 25,000 mAh |
| Max output | 165 W |
| Ports | 2 built-in USB-C cables plus USB-C and USB-A ports; up to 100W per USB-C, 33W USB-A, 165W total |
This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for Keeping phones and tablets topped up during a power cut or a long day away from the mains.
Read the review →Best for Keeping a household's phones and a tablet topped up through a power cut, in a bank small enough to carry every day.
Best for Keeping a laptop as well as phones going through a long outage or a few days away from a socket.
as of 2 Nov 2026, 16:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Questions
Will the Anker 25K 165W charge a laptop?
Yes. Each USB-C output gives up to 100W, which covers most USB-C laptops, and its 90Wh capacity is about one full laptop charge.
Can I take the Anker 25K power bank on a plane?
Yes, in the cabin. At 90Wh it is under the 100Wh limit for power banks without airline approval. Two per person, and no charging on board, by the Civil Aviation Authority's rules.
How long does the Anker 25K take to recharge?
About two hours from a 100W USB-C charger, by Anker's figure. From a phone charger it takes much longer.
What cables come with the Anker 25K?
Two are built in: a retractable USB-C cable of about 70cm and a short USB-C lanyard. There is also a USB-C port and a USB-A port for your own leads.
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