Asus 120W Big Barrel Charger for ROG Strix / TUF Gaming F15

Asus 120W Big Barrel Charger for ROG Strix / TUF Gaming F15 — quick answer

The Asus 120W Big Barrel Charger for ROG Strix / TUF Gaming F15 is a genuine, tested Asus 120W power adapter available at N.N Laptops, Hafeez Center, Lahore for Rs. 7,800. It outputs 19V at 6.32A through the 6.0mm × 3.7mm big barrel connector and is the OEM-spec charger for ROG Strix G15, TUF Gaming F15, TUF Gaming A15. Backed by our 30-day check warranty with Lahore delivery and with nationwide delivery via TCS / Leopards.

Why genuine matters for your Asus laptop

Using a genuine Asus charger isn't just about compatibility — it's about protecting your investment. Fake or third-party chargers often lack proper voltage regulation, over-current protection, and shielding, which can lead to battery degradation, erratic charging, or even motherboard damage. This Asus 120W unit is built to the same specs as the charger that came in the box: tight voltage tolerance, low ripple noise, and full electromagnetic interference shielding. At N.N Laptops, we bench-test every charger before shipping to ensure it delivers clean 19V at 6.32A. Price in Pakistan for this reliability? Rs. 8,499 — a small price for peace of mind.

Full specifications

Build quality and safety features

This charger uses the same internal components as the original Asus adapter: high-quality electrolytic capacitors, reinforced strain relief on both cable ends, and a durable ABS brick casing. It includes over-voltage, over-current, and short-circuit protection. The white LED on the barrel tip glows when AC is connected, giving you immediate power confirmation. Cable length is generous: about 1.8m from brick to laptop plus a 1.5m wall cord, so you can route it neatly on your desk.

Compatibility — which laptops does this fit?

This 120W Asus charger is the OEM-spec power adapter for:

Wattage and connector are the two factors that decide compatibility. The 6.0mm × 3.7mm big barrel connector physically matches only the listed models — do not force it into a different-size port. If you have a related but different model, WhatsApp us with the exact spec sticker text and we'll confirm before you buy.

What about older Asus models or other brands?

This charger is designed for Asus ROG and TUF series with the big barrel connector. Older Asus models (like many K-series or X-series) use a 4.0mm or 5.5mm tip — those won't fit. For non-Asus laptops, the barrel size is almost always different. If you're unsure, message Sayam on WhatsApp 0314 4000131 with a photo of your original charger sticker, and we'll tell you in seconds.

What's in the box & build quality

Every charger we ship includes the brick-to-laptop cable (fixed), the Pakistan 3-pin C5 'mickey-mouse' wall cord, and a soft pouch for travel. Build quality on this Asus unit is exactly what came with the laptop new — same chassis injection, same internal magnetic shielding, same cable strain-relief.

What you get

• 1× Asus 120W adapter brick
• 1× Pakistan/UK 3-pin AC cord
• 30-day check warranty card

Real-world use — what to expect

Plug it in and the laptop charges at full speed: 0-50% in about 35-45 minutes on most modern Asus machines, full charge in 1.5-2 hours. The brick warms up to 40-45°C under load — that's normal for a switching power supply, not a defect. The white LED on the tip turns on the moment AC is connected, so you have instant visual confirmation the brick is alive even if the laptop battery is fully drained.

Gaming while charging — no performance hit

With a 120W supply, the ROG Strix or TUF Gaming laptop gets enough headroom to run at full turbo boost while charging simultaneously. Even during extended gaming sessions, the brick stays within safe operating temperatures. We've tested it on TUF Gaming F15 with Ryzen 7 and RTX 3060 — no throttling, no battery drain. For heavy GPU loads, the laptop may draw some power from the battery, but the charger keeps it topped up. If you upgrade to a 180W charger later, that's safe too — voltage remains 19V.

How to verify you've got the right charger

Three checks before you buy:

1. Wattage

Look at the sticker on the bottom of your current charger — if it says 120W, you're matched. A higher-wattage Asus charger is also safe (laptop only draws what it needs); a lower-wattage one will run the laptop but won't charge under heavy load.

2. Connector size

Use a calliper or compare to the sample photo. 6.0mm × 3.7mm big barrel is the only fit — don't force a wrong-size pin.

3. Voltage

Must be 19V. Never use a Asus charger from a desktop or printer — those are 12V DC and will damage the laptop board.

Quick tip: Check the LED

When you plug the charger into AC, the LED on the barrel tip should light up white immediately. If it flickers or doesn't light, the charger may be faulty. All our units are tested before dispatch, so you won't face that with us.

Where to buy in Lahore — and shipping nationwide

We're at Shop 66A, 3rd Floor, Hafeez Center, Gulberg III, Lahore. Walk-in welcome — bring your laptop and we'll test the charger on it before you buy. Lahore deliveries are free; nationwide via TCS / Leopards reach Karachi, Islamabad, Faisalabad, Multan, Peshawar in 1-3 working days. WhatsApp 0314 4000131 to confirm stock.

Browse all our laptop chargers laptop parts, or our complete laptop battery range.

Trust N.N Laptops — your Asus parts specialist

We've been serving customers from across Pakistan at Hafeez Center for years. Every charger is bench-tested, stock is fresh, and our 30-day check warranty means you're covered if anything goes wrong. Whether you're in Gulberg, Defence, or Bahria Town Lahore, or ordering from Karachi, Islamabad, Rawalpindi, or Sialkot — we ship fast and answer all questions personally. Sayam handles each order, so you get real advice, not a script.

Warranty & after-sales support

Every charger carries our standard 30-day check warranty — if the brick fails on first install, develops an output fault, or shows AC ripple during the test period, bring it back to the shop with the invoice for a full replacement or refund. No questions asked within the warranty window.

Frequently asked questions

Will this 120W charger work with my ROG Strix G15?

Yes. This adapter outputs 19V at 6.32A which exactly matches the ROG Strix G15 (and all other listed models). The 6.0mm × 3.7mm big barrel connector is the OEM specification — no adapter or convertor required. Plug it in and you're charging at full speed.

What about the new USB-C version — should I switch?

If your laptop has a Thunderbolt or USB-C charging port (most Asus models from 2019 onwards do), USB-C PD is the future-proof choice — you can charge from any compatible 65W+ brick, phone bank, or hub. For older slim-tip / barrel models, stick with the original-style charger listed here.

Can I use a higher-wattage charger instead?

Yes, higher wattage is safe as long as the voltage matches. A 145W or 165W Asus brick with the same 6.0mm × 3.7mm big barrel works fine and will not damage the laptop. The laptop only draws what it needs — extra headroom helps for fast-charge mode and heavy GPU loads.

Does the charger include the wall cable?

Yes. Every charger ships with the Pakistan 3-pin C5 (mickey-mouse) AC cable to the wall. The brick-to-laptop side is a fixed cable for slim-tip and barrel models, and a detachable USB-C cable on USB-C models.

Can I use this charger with ROG Strix Scar or Zephyrus M16?

ROG Strix Scar models with big barrel connector (same 6.0mm) will work as long as the wattage requirement doesn't exceed 120W. Most Scar 15/17 models come with 180W or 240W — you can use this 120W for charging, but during heavy gaming the battery may discharge slowly. Zephyrus M16 uses a different connector (usually 6.0mm but sometimes USB-C), so check your port type. If unsure, WhatsApp 0314 4000131 with a photo.

N.N Laptops — Shop 66A, 3rd Floor, Hafeez Center, Gulberg III, Lahore. WhatsApp / Call 0314 4000131. Lahore delivery, with nationwide delivery via TCS / Leopards, 30-day check warranty.