Best ASUS ROG Ally Power Banks: Top Picks

The best power bank for the ASUS ROG Ally is the Anker 737 Power Bank (PowerCore 24K). It delivers 140W of USB-C Power Delivery 3.1, which is enough to charge the Ally at full speed while you play, and its 24,000mAh capacity roughly doubles your playtime. It balances capacity, portability, and price better than any other option we’ve tested.

What to Look For

Not all power banks can charge the ROG Ally properly. Here are the specs that actually matter:

• USB-C Power Delivery (PD) with at least 65W output: The Ally’s original charger supplies 65W. To play and charge simultaneously without draining the battery, your power bank must output at least 65W over a single USB-C port. Lower-wattage banks (like phone chargers) will slow the drain but won’t keep up under load.
• PPS (Programmable Power Supply) support: The Ally uses a 20V/3.25A profile. Many PD chargers support 20V, but PPS allows finer voltage control. It’s not strictly required for the Ally, but it ensures compatibility with newer devices and helps maintain stable power delivery.
• Capacity (measured in watt-hours, not just mAh): The Ally has a 40Wh battery. A 20,000mAh power bank at 3.7V is roughly 74Wh, so you’ll get about 1.5 full charges. For extended travel, look for 24,000mAh (87Wh) or 27,000mAh (99Wh) — the largest you can carry on a plane without special approval.
• Multiple ports with smart power sharing: If you want to charge the Ally and your phone simultaneously, the bank must split its output intelligently. Some banks drop to 45W when a second device is plugged in, which is too low for the Ally. Look for banks that keep 65W+ on one port while still charging a phone.
• Physical size and weight: A 20,000mAh bank weighs around 1 pound. Larger banks are heavier and bulkier. If you’re carrying it in a backpack, that’s fine; if you’re holding it in your hands, it gets tiring.
• Pass-through charging: This lets you charge the power bank while it’s charging the Ally. Useful when you’re near a wall outlet but want to top up both overnight.

Top Power Bank Picks for the ROG Ally

Anker 737 Power Bank (PowerCore 24K)

Strengths: 140W total output, 87Wh capacity, two USB-C ports and one USB-A, clear digital display showing remaining capacity and output wattage. It can deliver a full 65W to the Ally while still charging a phone at 15W. The build quality is excellent, and the display is genuinely useful for monitoring charge speed.

Trade-offs: It’s heavy (about 1.4 lbs) and bulky. The price is higher than many 20,000mAh banks, but you’re paying for the 140W capability and the display.

Who it’s for: The best all-around choice for most Ally owners who want a single power bank that can handle the Ally plus a phone or tablet, with enough capacity for a full day of travel.

Baseus 65W Power Bank (20000mAh, 2-Pack)

Strengths: This is actually two 10,000mAh banks that can be used separately or together. Each bank outputs 65W over USB-C, so you can charge the Ally with one and use the other for your phone. The total capacity is 20,000mAh (74Wh), and the price is very competitive. The two-bank design is flexible — you can leave one at home.

Trade-offs: When you use both banks together, they don’t combine into a single 130W output; they charge separately. The plastic build feels less premium. The 10,000mAh individual capacity is only about 0.75 charges for the Ally.

Who it’s for: Budget-conscious users who want flexibility and don’t need a single massive bank. Great for sharing with a friend or keeping one in a bag.

Zendure SuperTank Pro

Strengths: 26,800mAh (96.48Wh) capacity, 100W USB-C PD output, and a premium aluminum body. It has two USB-C ports and two USB-A ports, and it can output 100W to a laptop or the Ally while still charging other devices. The capacity is the highest you can legally bring on a plane (under 100Wh).

Trade-offs: It’s expensive, heavy (1.5 lbs), and the 100W output is overkill for the Ally — you won’t see faster charging than 65W. The screen is small and not as informative as the Anker’s.

Who it’s for: Travelers who need maximum capacity in a single device and also want to charge a laptop or other high-power gear. If you only need the Ally, it’s more than you need.

RAVPower 20000mAh PD 60W Power Bank

Strengths: A reliable, no-frills option with 60W USB-C PD output (close to the Ally’s 65W requirement). It has a slim profile and a reasonable weight. The price is usually lower than the Anker 737, and it includes a USB-C cable.

Trade-offs: 60W is just below the Ally’s 65W spec, so under heavy load (e.g., playing a demanding game at max brightness), the battery might drain very slowly instead of staying flat. It only has one USB-C port, so you can’t charge the Ally and a phone simultaneously without using the USB-A port, which drops the USB-C output to 45W.

Who it’s for: Budget buyers who mostly play plugged in and just need a top-up between sessions. Not ideal for marathon gaming on the go.

Nekteck 65W USB-C Power Bank (20000mAh)

Strengths: This is a straightforward 20,000mAh bank with 65W USB-C PD output, which matches the Ally’s charger exactly. It has a rugged, grippy exterior and a simple LED battery indicator. The price is very affordable, and it’s compact for its capacity.

Trade-offs: The build quality is utilitarian, not premium. It lacks a digital display, and the USB-A port only outputs 18W. No pass-through charging.

Who it’s for: The best value pick for someone who wants a no-nonsense bank that will keep the Ally at 100% while playing, without extra features they won’t use.

INIU 65W Power Bank (25000mAh)

Strengths: 25,000mAh (92.5Wh) capacity, 65W USB-C PD output, and a clear LED display showing remaining percentage. It’s slightly lighter than the Anker 737 despite having more capacity. The price is mid-range, and it includes a 60W USB-C cable.

Trade-offs: The display is basic (just percentage, not wattage). The USB-A port is limited to 18W. Some users report that the 65W output is only sustained when the bank is above 50% charge — below that, it may drop to 45W.

Who it’s for: A good middle ground between the Anker 737 and the budget options, especially if you want a bit more capacity than 20,000mAh without the premium price.

How to Choose

Budget: You can get a functional 65W bank for around $50-60 (like the Nekteck or INIU). For $100-130, you get the Anker 737 with its display and 140W capability. The Zendure SuperTank Pro is $150+ and only worth it if you need the 100W output for a laptop.

Use case: If you play mostly at home or near an outlet, a 10,000mAh bank (like the Baseus) is enough for a quick top-up. If you’re on a plane or long train ride, you want at least 20,000mAh (74Wh) to get 1.5-2 full charges. For multi-day trips without wall access, the 25,000-27,000mAh range (92-99Wh) is your only option, and you must stay under 100Wh for TSA.

Trade-offs: The biggest trade-off is capacity vs. weight. A 20,000mAh bank is about 1 lb; a 27,000mAh bank is closer to 1.5 lbs. You’ll feel that in a backpack. Also, consider the number of ports. If you always travel with a phone, a bank with two USB-C ports (like the Anker 737) is worth the extra money.

Finally, check the output specs carefully. Some banks advertise “65W” but only when the port is used alone; when you plug in a second device, that port drops to 45W. Always read the fine print or look for “65W output on port 1 when used alone” in reviews.

Frequently Asked Questions

Can I use any USB-C power bank with the ROG Ally?

Yes, but it must support USB-C PD with at least 45W output to charge while playing. Below 45W, the Ally will charge very slowly or not at all under load. For best results, use a 65W+ bank.

How many charges will a 20,000mAh power bank give the Ally?

The Ally’s battery is 40Wh. A 20,000mAh bank at 3.7V is about 74Wh. Accounting for conversion losses (around 15%), you get roughly 62Wh usable, which is about 1.5 full charges. In practice, you’ll get about 1.5 hours of extra playtime per charge cycle.

Is it safe to use a 100W power bank with the Ally?

Yes. The Ally’s charging circuitry will only draw what it needs (up to 65W). A 100W bank won’t damage it; it just has headroom for other devices.

Can I charge the Ally and my phone at the same time?

Yes, but check the power sharing. On many banks, plugging in a second device drops the main USB-C port to 45W, which is too low for the Ally. Look for banks that maintain 65W on one port while still delivering at least 15W to a second port.

What’s the maximum power bank capacity I can take on a plane?

Most airlines allow up to 100Wh (about 27,000mAh) without special approval. The Anker 737 (87Wh) and Zendure SuperTank Pro (96.48Wh) are both under that limit. Anything over 100Wh requires airline approval and is generally not allowed in carry-on.

Why does my power bank charge the Ally slowly even though it says 65W?

Check the cable. A cheap or damaged USB-C cable can limit power delivery. Also, the Ally’s charging speed depends on the game’s power draw. If you’re playing a demanding game at max brightness, the Ally might be consuming 40-50W, leaving only 15-25W for charging, which is slow.

Bottom Line

For most ROG Ally owners, the Anker 737 Power Bank is the clear winner: it delivers the full 65W the Ally needs, has enough capacity for a full day of gaming, and its display shows you exactly what’s happening. If you’re on a tight budget, the Nekteck 65W gets the job done for less than half the price, though you give up the display and multi-device convenience. And if you need maximum capacity for long trips, the Zendure SuperTank Pro is the best (and most expensive) option. Whatever you choose, make sure it outputs at least 65W on a single USB-C port — that’s the single most important spec for the Ally.

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