The JSAUX 45W USB-C Charger for Steam Deck is a compact replacement or spare power adapter for the Deck, supporting USB-C Power Delivery 3.0 at the full 45W the Deck draws at peak. It is a smart purchase as a second charger for travel, as a desk-side spare, or as a replacement for a damaged Valve original. This JSAUX 45W charger review covers what makes a Deck-compatible charger different, real-world performance, and the value verdict.
Prime JSAUX 45W USB C Charger for Steam Deck/OLED, 5FT Cable Type C PD 3.0 45 Watt Fast Charging Compatible with Steam Deck, Switch/OLED, iPhone Air/17/16/15, Samsung S25 S24 S23 S22, Pixel, iPad, MacBook
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JSAUX 45W USB-C Charger at a Glance
| Component | Specification |
|---|---|
| Compatibility | Steam Deck (LCD & OLED), ROG Ally (charges at 45W), Legion Go, phones, USB-C laptops |
| Power output | 45W max via single USB-C PD 3.0 with PPS support |
| PD profiles | 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/2.25A (45W) |
| PPS support | Yes — programmable power supply for compatible devices |
| Plug | Foldable US plug (region-specific variants available) |
| Material | ABS with flame-retardant V0 rating |
| Bundled cable | 1.5m USB-C to USB-C cable, rated for 60W PD |
| Dimensions | approx 2.3 x 2.0 x 1.0 in / 58 x 50 x 25 mm |
| Approx price | around $20 |
Build Quality & Materials
JSAUX’s 45W charger is compact and well-built — a foldable-plug brick about the size of two stacked Bic lighters. The plastic shell is rated V0 flame-retardant (the most demanding consumer flammability rating, meaning the plastic stops burning within 10 seconds of ignition source removal). The foldable plug is a meaningful travel convenience — it tucks flat against the body rather than protruding awkwardly. The included USB-C to USB-C cable is 1.5 metres long and rated for 60W PD, which is enough headroom for the Deck’s 45W maximum draw. JSAUX provides a 12-month warranty. The charger feels appropriate for a $20 spec — not as compact as the most premium GaN-class chargers, but substantially smaller than older silicon-based 45W bricks, and built to a respectable standard.
Functionality & Real-World Use
The charger delivers what the Steam Deck needs: full 45W via USB-C PD 3.0. The Deck negotiates the correct PD profile automatically and charges at its full rated speed — the same as the bundled Valve charger. There is no functional difference at the wall socket between this charger and Valve’s own; both deliver the Deck’s required 45W at the 20V profile. PPS support is the meaningful upgrade for non-Deck use — it allows compatible phones (recent Samsung Galaxy and Google Pixel models) to charge more efficiently. For USB-C laptops, 45W is enough for full-speed charging on most thin-and-light models (MacBook Air, Dell XPS 13, HP Spectre x360) and trickle-charging on larger gaming laptops (45W is below most 14-inch and 16-inch gaming laptop charging spec, but it will keep them from discharging during light use).
The practical use cases are clear: a second Deck charger for travel (so you don’t have to unplug your desk charger every time you leave), a spare for a damaged original, or a multi-device charger when paired with the right cable for phone or USB-C laptop fast-charging. The compact size and foldable plug make it genuinely better than Valve’s original for travel.
Compatibility with Steam Deck / ROG Ally / Legion Go
The charger is fully compatible with all three major handhelds. The Steam Deck (LCD and OLED) uses 45W as its official charging spec, which this charger meets exactly. The ROG Ally officially uses 65W, but accepts 45W slow-charging without issue and charges at full speed when not gaming. The Legion Go uses 45W as its official spec, which this charger meets. The charger also works with phones, tablets and most USB-C laptops. For Deck transport with a charger included, see the JSAUX carrying case (which includes a dedicated charger pocket). For broader power needs, the UGREEN Nexode 25,000mAh power bank in this guide is the portable battery counterpart.
Installation / Setup
No installation — plug-and-play. Connect the USB-C cable to the charger and to the Steam Deck, plug the charger into a wall socket and the Deck charges. The Deck will display its charging status on screen. For travel, fold the plug flat against the body before stowing. The charger has no power switch; it’s always live when plugged into a socket.
What’s in the Box
The 45W USB-C charger with foldable plug, a 1.5m USB-C to USB-C cable rated for 60W, a quick start guide and warranty information. The bundled cable is a useful inclusion — many third-party chargers ship without one, which means a separate purchase. JSAUX deserves credit for including a properly-rated cable from the start.
Verdict
At around $20 the JSAUX 45W USB-C Charger is an easy recommendation as a spare or travel-second Deck charger. It delivers the full 45W at the correct PD profile, the foldable plug is genuinely useful for travel, and the included USB-C cable removes the cable-purchase question. There is no functional advantage over Valve’s bundled charger at the desk, but the compact form factor and foldable plug make it better for travel. For Deck owners who already have one Valve charger, this is a smart second charger to keep in a travel bag. For more portable power options, see the UGREEN Nexode 145W power bank in this guide.
An honest framing on the buy-vs-skip question: if you only own one Deck charger and it lives by your couch or desk, you have already experienced the small daily annoyance of unplugging it whenever you travel with the Deck. A second charger eliminates that annoyance permanently — keep one at home, one in your travel bag, and you will never again be in the situation of arriving somewhere with a dead Deck and no way to charge it. For $20, that quality-of-life upgrade is genuinely worth it for any Deck owner who travels with the handheld even occasionally. The PPS support means the charger also has utility beyond the Deck: it fast-charges newer Samsung and Pixel phones at their full rated speed, and it works as a useful spare charger for any USB-C laptop or tablet when the dedicated laptop charger is missing. The 1.5m bundled cable is a thoughtful inclusion and rated for 60W PD, which is enough headroom for the Deck’s 45W draw plus future-proofing. JSAUX provides a 12-month warranty. For Deck owners pairing this with a portable battery, the UGREEN Nexode 25,000mAh 145W power bank in this guide is the natural companion piece — together they form a complete power kit for travel, with the JSAUX charger handling wall socket recharging and the UGREEN bank handling off-grid power.
Frequently Asked Questions
Does the JSAUX 45W charger charge the Steam Deck at full speed?
Yes. The charger delivers 45W via USB-C PD 3.0, which is the Steam Deck’s full rated charging speed. It is functionally identical to Valve’s bundled charger at the wall socket.
Will the JSAUX 45W charger charge an ROG Ally?
Yes, at 45W rather than the Ally’s official 65W. The Ally will charge at full speed when not gaming, and will slow-charge during gaming sessions. For full ROG Ally charging during gaming, a 65W charger is required.
Is the JSAUX 45W charger safe to use with my phone?
Yes. The charger has PPS support, which means compatible phones (recent Samsung Galaxy, Google Pixel) charge at their full fast-charge speed. Other phones charge at standard USB-C PD speed.
Can the JSAUX 45W charger charge my laptop?
It will charge most thin-and-light USB-C laptops (MacBook Air, Dell XPS 13, HP Spectre x360) at full speed. It will trickle-charge larger gaming laptops and 14-16 inch laptops below their normal charging spec, which is suitable for light use but slow for heavy work.
More Steam Deck Reviews
- Anker Steam Deck Dock 6-in-1 Review: OLED / ROG Ally
- SanDisk 1.5TB Ultra microSDXC Review: Steam Deck Storage
- JSAUX 2-Pack Glass Screen Protector Review: Steam Deck
- UGREEN 25,000mAh 145W Power Bank Nexode Review
- JSAUX Upgraded Dock 4K@120Hz Review: Steam Deck OLED
- JSAUX Original Dock 4K@60Hz Review: Steam Deck Value
- JSAUX PC0104 ModCase Review: Steam Deck Protection
- JSAUX Matte Screen Protector Review: Steam Deck Anti-Glare
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