Quick verdict
The Anker 25,000mAh power bank (165W) is the best single power bank for a family or a laptop traveller: three 100W USB-C ports and a USB-A port charge four devices at once, two built-in USB-C cables (one retractable, one doubling as the carry strap) mean you never hunt for a lead, and at about 90Wh it is under the 100Wh airline limit, so it flies in hand luggage. It recharges at up to 100W, reaching 30% in around 20 minutes by Anker's figures, and cost £69.98 at our 30 October 2026 check, down from its usual £89.98. If you only ever top up one phone, the smaller Anker 10,000mAh is £15 and pocketable; if you want wireless MagSafe charging, the Anker MagGo is the pick; spend more on the Anker Prime 26K only if you genuinely need to fast-charge two laptops at once.
Anker Power Bank (25K, 165W): 4.7/5
25,000mAh with three 100W USB-C ports, two built-in cables and a live display, under the 100Wh flight limit. £69.98 at our 30 October 2026 check, usually £89.98.
The full review is below.
Should you buy the Anker 25,000mAh power bank?
Yes, if one battery needs to keep several people going. This is the power bank I own and use all the time, on family camping trips and on holidays with longer travelling days, and the shape of it is exactly that job: 25,000mAh of capacity, three USB-C ports that each deliver up to 100W, a USB-A port, and two built-in cables so four devices can drink from it at once. It charges a laptop properly, it is fine to take on flights, and at our 30 October 2026 check it was £69.98 against a usual £89.98.
What it is
This is Anker's big travel bank: 25,000mAh (about 90Wh, which matters for flying, more on that below) with 165W of total output. The port list is the headline. Three USB-C ports each deliver up to 100W, which is full laptop speed, alongside a USB-A for older cables and gadgets.
Two of those USB-C connections are built in. One is a retractable cable that pulls out to about 70cm and winds back in, rated by Anker for more than 20,000 retractions. The other is a short loop that doubles as the carrying strap, rated for more than 20,000 bends. That sounds like a gimmick until you live with it: the cable you need is always attached, and the kids cannot wander off with it.
Recharging the bank itself takes up to 100W in, with Anker claiming 30% in about 20 minutes, so a half-hour at a cafe socket puts real charge back in it.
Living with it
I have this model and it has become the default travel battery in our house. The large capacity is the point with a family: everyone has a phone, there is usually a tablet or two, and on travel days they are all hungry at the same time. One bank that charges four devices at once means one thing to pack, one thing to keep track of, and no arguments about whose turn it is.
It charges really quickly, and the laptop point is worth underlining: with 100W available per port this charges my laptop properly, not a trickle that slows the drain but an actual charge. That is the difference between the £20 banks and this class, and it is why this is the one that comes on any trip where work might happen.
The feature I did not expect to love is the display. It shows the remaining percentage, which every decent bank does now, but it also shows how long each connected device will take to finish charging. On a campsite or in a departure lounge, knowing the phone needs 25 more minutes changes how you plan. It turns the bank from a dumb brick into something you can actually make decisions with.
Check today's price on AmazonCan you fly with it?
Yes. The rule for UK flights follows the ICAO standard: power banks must go in hand luggage, never the hold, and anything up to 100Wh is allowed without approval. At 25,000mAh this bank works out at roughly 90Wh, under the limit, and I have flown with it without any issue. It is exactly the capacity Anker built it to: as much battery as you can take on a plane without paperwork, and no more.
The honest cons
It is not a pocket bank. 25,000mAh means real size and weight, and if your use case is topping up one phone on a dog walk, this is the wrong tool; our family uses the Anker 10,000mAh for that job and it costs £15.
The 165W is a total across the ports, not per port. One laptop at 100W plus phones is exactly what it is built for; two laptops both demanding full speed at once will share what is left. If that is genuinely your life, Anker's own Prime 26K delivers 300W for roughly double the money, and for most people it is overkill.
And while the built-in cables are genuinely useful, the retractable one is around 70cm. Long enough for a table, short enough that the bank sits near the device rather than across the room.
Where it fits in the Anker lineup
Think of Anker's current banks as a ladder. The 10,000mAh slim at £15 is the pocket one for a phone. The MagGo 10K at £49 snaps to an iPhone and charges wirelessly. This 25K at £69.98 is the family and laptop tier. The Prime 26K at £148.99 is the specialist for people charging two laptops at full speed. For one bank that covers a whole household's travel, this one is the sweet spot, and it is the bank I would replace first if I lost it. Beyond banks entirely, the finder tool maps the whole ladder to your needs in a couple of questions.
Specs at a glance
Anker's claimed figures from the UK listing, price from our 30 October 2026 check:
| Spec | Anker Power Bank (25K, 165W) |
|---|---|
| Capacity | 25,000mAh (approx. 90Wh) |
| Total output | 165W |
| Ports | 3× USB-C (up to 100W each), 1× USB-A |
| Built-in cables | Retractable USB-C (~70cm, 20,000+ retractions); strap cable (~30cm, 20,000+ bends) |
| Devices at once | 4 |
| Recharge input | Up to 100W (claimed 30% in ~20 minutes) |
| Display | Live percentage plus time-to-full per connected device |
| Flight status | Under the 100Wh cabin limit; hand luggage only |
| Warranty | 18 months |
| Price | £69.98 (usually £89.98) |
Verdict
The Anker 25K is the best one-bank answer for a family that travels, and that is exactly how to judge it: not against pocket banks, which beat it on size, but against the job of keeping three or four people's devices alive through a travel day, a campsite weekend or a power cut. It charges a laptop at full speed, flies legally, carries its own cables, and tells you how long everything needs. After months of family use mine shows no sign of slowing down, and at £69.98 on the current deal it is comfortably the most useful battery in our house.