Best power bank for ROG Xbox Ally X - 65 W to charge while you play

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Best power bank for ROG Xbox Ally X? Short answer

Buy a USB-C power bank with Power Delivery rated at at least 65 W and a capacity of 20,000-25,000 mAh. This is the setup recommended by Windows Central and Guiding Tech guides, and it gives the console enough power to charge even while you play.

The most popular choice is the Anker 20,000 mAh with a built-in USB-C cable. Windows Central says it delivers enough power to charge the Xbox Ally even in Turbo mode. If you prefer a bigger energy reserve, look at 25,000 mAh models.

Why exactly 65 W

The ROG Xbox Ally X has an 80 Wh battery and a 65 W USB-C power adapter (20 V, 3.25 A). A power bank with the same output gives the console what the original charger does. ASUS notes that whether the adapter is included in the box depends on the country and model, so check this when you buy.

A weaker power bank, for example 20-30 W, will also top it up, but with more demanding games and in Turbo mode the console draws more than the power bank delivers. The result: the battery drains more slowly, but it still discharges even while plugged in. That is better than nothing, you just can't count on charging during gameplay.

Power above 65 W will not speed up charging the console, but it makes sense if the same power bank is also meant to power a laptop or a phone. So when choosing, consider all of your electronics, not just the console.

Below we have gathered USB-C PD power banks rated 65 W and up, with a capacity of 20,000-25,000 mAh, which is the range recommended in the guides.

Recommended power banks for ROG Xbox Ally X

How much 20,000 and 25,000 mAh will really add

Power bank capacity is given for 3.7 V cells. Calculated this way, 20,000 mAh is about 74 Wh, and 25,000 mAh is about 90 Wh. Some of the energy is lost in the converters, and about 3/4 of the cell energy reaches the device (Anker data).

In practice, 20,000 mAh delivers about 55 Wh, and 25,000 mAh about 67 Wh. This is a rough estimate, but it shows the scale well. With an 80 Wh battery, the first power bank will add about 2/3 of the capacity, and the second about 4/5.

Fun fact: the Ally X battery is 80 Wh, so even a 25,000 mAh power bank will not charge it once from 0 to 100%.

What does this mean in practice? The most sensible approach is to connect the power bank when the battery drops to about 30-40% and play with it in a bag or backpack. A built-in cable is handy here, because you don't need to look for a separate cord.

ROG Xbox Ally X20 and the standard Xbox Ally

The ROG Xbox Ally X20 has an 80 Wh battery like the Ally X, so the calculations above apply to it in the same way. Its power adapter is 68 W (20 V, 3.4 A), and the USB4 port supports Power Delivery 3.0. The second USB-C port is 3.2 Gen 2. A 65 W or more powerful power bank, such as 100 W models, is a good choice for it.

Fun fact: the ROG Xbox Ally X20 was created for the 20th anniversary of the ROG brand and has a 7.4-inch OLED screen.

The standard ROG Xbox Ally (RC73YA) has a 60 Wh battery and the same 65 W power adapter. Here the same power bank will do better. Roughly, 20,000 mAh (about 55 Wh) almost suffices for a full charge, and 25,000 mAh (about 67 Wh) should be enough for one full charge. If weight matters to you, a small 20,000 mAh power bank with 65 W is a sensible choice.

Power bank on a plane and the 100 Wh limit

Power banks up to 100 Wh can usually be carried only in carry-on luggage, not in checked baggage. Both 20,000 mAh and 25,000 mAh fit within this limit. The latter, at about 90 Wh in the cells, is already close to the limit, so don't look for larger models.

Before the flight, also check the airline's regulations, as the rules may differ slightly between airlines. It is convenient to keep the power bank at hand so you can connect the console during the trip.

Frequently asked questions about power banks for the Ally X

Which power bank for the ROG Xbox Ally X?

Choose a USB-C PD power bank with a power of at least 65 W and a capacity of 20,000 mAh or more. The most commonly bought is the Anker 20,000 mAh with a built-in cable. If you want a bigger reserve, choose a 25,000 mAh model with 100 W from a single port.

Will a 20 W power bank charge the ROG Xbox Ally X?

It will top it up, but slowly. A weaker power bank will extend play time, but with more demanding titles the console may still discharge even when connected. For gaming while charging, it is better to have 65 W or more.

How many times will a 20,000 mAh power bank charge the ROG Xbox Ally X?

Not even once from 0 to 100%. Roughly, it delivers about 55 Wh with an 80 Wh battery, so it will add about 2/3 of the capacity. That is why it is best to connect it when the battery drops to about 30-40%.

Does the same power bank fit the ROG Xbox Ally X20?

Yes. The X20 has an 80 Wh battery like the Ally X and a 68 W power adapter, and the USB4 port supports Power Delivery 3.0. A 65 W or more powerful power bank will be a good choice for it.

Can a power bank for the ROG Xbox Ally X be taken on a plane?

Yes, if it is up to 100 Wh and travels in carry-on luggage. The 20,000 and 25,000 mAh models fit within the limit. Also check your airline's regulations.

See also

• Best docking station for ROG Xbox Ally X - the ones that actually fit
• Best microSD card for ROG Xbox Ally and Ally X20 - UHS-II or microSD Express
• Best SSD for ROG Xbox Ally and Ally X - M.2 2280, capacity and the thermal cover
• Best monitor for ROG Xbox Ally X and X20 - portable or 27-inch with USB-C
• Best power bank for Nintendo Switch 2 - how many watts it really draws

Sources

• ASUS: ROG Xbox Ally X (2025) specifications - manufacturer page (rog.asus.com)
• ASUS: ROG Xbox Ally X20 Bundle (2026) specifications - manufacturer page (rog.asus.com)
• Windows Central: Best Xbox Ally and Xbox Ally X power banks - industry article (windowscentral.com)
• Tom's Hardware: Asus ROG Xbox Ally X review - industry article (tomshardware.com)
• Guiding Tech: Best ASUS ROG Ally power banks - industry article (guidingtech.com)