I’m quite fond of my ASUS ROG Ally, yet it’s undeniable that its brief battery span can be quite inconvenient. In fact, it significantly curtails the duration of my portable gaming experiences when I’m not plugged in.
Upon the release of the upgraded ROG Ally X, what initially drew me was its twice as large battery capacity compared to the original model. However, the notion of purchasing an entirely new handheld device solely for enhanced battery life seems somewhat absurd.
With the JSAUX ROG Ally Battery Upgrade Kit, you’ll get a larger 65Whr battery and all the necessary tools for replacing the standard 40Whr Ally battery, enhancing your device’s battery life.
This upgrading process is relatively easy, but it might not be for everyone.
How about exploring the advantages and possible drawbacks of the JSAUX ROG Ally Battery Upgrade Kit that we can delve into together?
JSAUX ROG Ally Battery Upgrade Kit: Cheat sheet
- What is it? This kit provides you with all of the tools and parts you need to upgrade your ASUS ROG Ally battery. It isn’t compatible with ROG Ally X.
- Who is it for? It’s ideal for anyone who wants to get longer battery life out of their handheld and feels confident in their ability to upgrade tech devices.
- How much does it cost? You can purchase this battery upgrade kit for $89.99 at JSAUX. JSAUX also sells many of its products on Amazon. So, while this kit currently isn’t on Amazon at the time of writing, it’s possible it will be on Amazon sometime down the road.
- What did I like? Everything I needed to do the battery upgrade was included in the box. JSAUX also provides step-by-step written instructions with pictures as well as a video tutorial to follow. Overall, the upgrade process was relatively easy. Plus, the larger battery capacity really does extend my gaming sessions by quite a bit.
- What did I not like? I was required to make irreparable changes to my ROG Ally casing, including cutting some of the inner plastic. Additionally, while JSAUX’s replacement 65Whr battery is a lot larger than the original 40Whr Ally battery, it isn’t as big as the 80Whr in the Ally X. It’s also worth noting that the replacement back casing doesn’t have textured grips, and it might not work with form-fitting protective Ally cases.
JSAUX ROG Ally Battery Upgrade Kit: Price and availability

The JSAUX ROG Ally Battery Enhancement Set is a new item released by the company. Currently, you can only purchase it from the JSAUX online store for $89.99. But when I last looked, there was a discount available on the JSAUX website, bringing the price down to $79.99.
It’s quite likely that this battery kit from JSAUX could be offered on Amazon at some point, as they already sell many of their other handheld accessories there.
JSAUX ROG Ally Battery Upgrade Kit: Everything in the box

This set provides you with a fresh backplate for your handheld device, a 65-watt battery, a pair of blue anti-static gloves, spare screws, thumb grips for joysticks, sticky bumper decals, a screwdriver, a flush cutter tool, a prying pick, a prying bar, and a metallic thermal plate with adhesive on one side.
What’s crucial to understand is that this set provides all the necessary components for the upgrade. All you’ll require in addition is a clean, workable surface.
JSAUX ROG Ally Battery Upgrade Kit: What I like
Initially, when I unboxed it, I was taken aback to discover no guidelines inside, but a JSAUX agent directed me to a section on their website where they provide detailed, illustrated instructions along with a video walkthrough for the same product.
I’ve embedded that video above.
Should your curiosity be piqued, feel free to explore my additional resource, jam-packed with helpful suggestions for enhancing the battery of the ROG Ally.




To put it simply, upgrading the battery life of your ROG Ally with this JSAUX kit mainly consists of these steps:
1. Open your handheld device.
2. Transfer the back buttons and triggers to the new back plate.
3. Carefully detach a ribbon cable from the motherboard.
4. Remove the existing battery.
5. Peel off some foam padding.
6. Cut the plastic case slightly to accommodate the larger battery.
7. Insert the new battery in its place.
8. Add a thermal dissipation plate for cooling.
9. Reattach the ribbon cable.
10. Close the device’s casing once everything is securely in place.
As a non-expert in electronics, particularly motherboards, I approached the task of swapping my ROG Ally battery with some apprehension. However, armed with the provided tools, reading the instructions, and following along with a video tutorial, I found it surprisingly straightforward to complete the process quickly.
So, how long does the upgraded battery last for?

During my battery tests, it was evident that the JSAUX ROG Ally battery endures for a considerably longer duration compared to the original Ally battery. However, it should be noted that it doesn’t last as long as the ROG Ally X battery, as anticipated.
In simpler terms, when you play Cyberpunk 2077 on the ROG Ally device with a battery capacity of 40Whr, it typically lasts about 41 minutes if the game’s graphics are set to their default level as used on the Steam Deck and the TDP (Thermal Design Power) is adjusted to 25W. Additionally, the screen brightness is maintained at around 200 nits during this period.
After setting up the JSAUX 65Whr battery, I found that the device ran for approximately 1 hour and 30 minutes, representing a runtime increase of around 120% compared to its previous performance.
I chose to test how enduring the handheld device would be when the Ally display’s brightness was reduced to zero percent, RGB illumination was deactivated, the system was configured to its minimum TDP (10W for Ally, 13W for Ally X), and while running a game with less graphical complexity.
In the course of this examination, I utilized Minecraft Java Edition, which is the only edition I possess; unfortunately, it does not allow for controller usage, so I employed a combined mouse and keyboard setup instead.
In the course of the Minecraft experiment, the initial Ally battery ran for approximately three hours and fourteen minutes, whereas the newly-used battery endured around four hours and fifteen minutes. This implies that the new battery lasts roughly 31% longer than its predecessor.
JSAUX ROG Ally Battery Upgrade Kit: What I don’t like






Before deciding to purchase this kit, there are four key aspects you might want to think about thoroughly. These factors could potentially influence your final decision.
Initially, it was necessary for me to remove a part of the internal plastic from the ROG Ally case to accommodate a bigger battery.
It’s understandable that some individuals may hesitate to make these lasting alterations given that this upgrade wipes out any existing ROG Ally warranty they currently possess, if any.
To put it simply, JSAUX simplified the process for me with their exceptionally precise cutter, which gave the impression of slicing through paper rather than plastic. Consequently, I managed to produce smooth, flawless cuts devoid of any uneven or jagged edges.
Additionally, it’s important to mention that although the 65Whr battery pack offers a significantly larger capacity compared to the standard 40Whr Ally battery (an increase of about 62%), it remains smaller than the 80Whr battery found in the ROG Ally X.
Using under two hours of battery life while playing graphics-heavy games at 25W might not be perfect, but it’s certainly more efficient compared to the battery life you would get from a fresh Ally device.
Plus, upgrading your current Ally battery is cheaper than buying an Ally X.

As a researcher, I noticed that unlike the original backing with its textured grip areas, the new one from JSAUX is smoother to touch.
In my opinion, the newly-installed casing on the ROG Ally makes it feel overly slippery for my liking. I’ve thought about enhancing its grip with textured stickers or perhaps even an ROG Ally grip accessory, assuming I can find one that fits perfectly.
To ensure a snug fit with the new battery, the substitute back casing supplied by JSAUX is approximately 1mm larger in thickness compared to the original one.
This doesn’t look like a huge difference and doesn’t make the Ally that much thicker, either.
Although some snug-fitting protective cases designed for ROG Ally, such as the dBrand Killswitch, may not be compatible with your device following an update, it’s essential to keep this in mind before proceeding.
JSAUX ROG Ally Battery Upgrade Kit: Alternatives

If you enjoy prolonged gaming sessions on your ROG Ally but are hesitant to upgrade your device right now, you could benefit from investing in a top-notch ROG Ally power bank instead.
Otherwise, you might want to take the plunge and spring for the ROG Ally X and its 80Whr battery.
JSAUX ROG Ally Battery Upgrade Kit: My final thoughts


✅You should buy this if …
- You’d like to increase your ROG Ally’s battery life.
- You’re looking for a kit that provides you with all of the upgrade tools you need.
- You want a kit with visual instructions to follow.
❌You should not buy this if …
- You don’t feel comfortable opening your Ally and making permanent changes.
- You mostly play your ROG Ally while it’s plugged into a docking station.
- You’re worried about a thicker casing making your Ally incompatible with a form-fitting protective case.
To sum it up, the JSAUX ROG Ally Battery Upgrade Kit offers an effective solution to extend your device’s battery life without requiring you to purchase a new handheld, and the upgrade process itself is straightforward and manageable.
As an analyst, I can express that this upgrade kit’s convenience lies in its comprehensive toolset it provides, along with a spacious rear casing designed to accommodate the enlarged battery. Furthermore, the inclusion of clear instructions and a tutorial video simplifies the process by providing guidance at every stage.
Simultaneously, this update significantly extends the total battery life of the ROG Ally, though it may not match the longevity of the ROG Ally X’s battery.
A more convenient design for the replacement backplate would be if it featured textured grip surfaces, rather than the slightly slick smooth ones it currently has.
However, ultimately, this is an ideal toolkit for individuals who are at ease with dismantling and enhancing their technological gadgets.
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2025-04-17 18:42