Pixel 2/2XL Charging Slow: Fixes That Work

If your Google Pixel 2 or 2 XL is charging slowly, the fix is usually a different cable, a clean charging port, or a software reset—not a new phone. Start by using the original Google charger and cable, then check the port for lint, and finally try a forced restart. Below is the full troubleshooting path, from the most common causes to the more obscure ones.

Why Your Pixel 2 Charges Slowly

The Pixel 2 and 2 XL support USB Power Delivery (USB-PD) at up to 18W, which is what enables fast charging. If you see “Charging slowly” on the lock screen, the phone is drawing far less than that. The usual culprits are:

Wrong charger or cable – USB-PD requires a compatible charger and a cable that supports 3A current. Many third-party cables only handle 2.4A or less.
Dirty or damaged charging port – Pocket lint compacts at the bottom of the port and prevents the plug from seating fully.
Background activity – Navigation, gaming, or heavy downloads while plugged in can make the battery drain faster than it charges, so the percentage barely moves.
Software glitch – A stuck process or a bad update can disable fast charging until a reboot.
Battery health degradation – After years of use, the battery itself may limit charge speed to protect itself. This is more likely if the phone is over 2–3 years old.

Step-by-Step Fixes to Try Now

Clean the charging port. Power off the phone. Use a wooden toothpick or a plastic SIM ejector tool to gently scrape the bottom of the USB-C port. Do not use metal, and do not blow into it (moisture can cause corrosion). You’ll be surprised how much lint comes out.
Use the original charger and cable. Google’s 18W USB-C power adapter and the USB-C to USB-C cable that came in the box are the only guaranteed combination. If you’ve lost them, buy a USB-PD charger rated at 18W or higher and a cable marked “USB-IF certified” or “3A.”
Try a different outlet. Some power strips or extension cords limit current. Plug directly into a wall socket.
Force restart. Press and hold the power button for about 30 seconds until the phone restarts. This clears most software glitches that affect charging.
Check for a “Charging slowly” notification. Tap it. It may say “Connected to charger, but charging slowly. Use the original charger.” If it does, the issue is the charger or cable.
Boot into Safe Mode. If the phone charges normally in Safe Mode, a third-party app is interfering. Hold the power button, then long-press “Restart” and confirm Safe Mode. Test charging there.

Understanding USB-PD and Why It Matters

USB Power Delivery is a standard that lets a charger and phone negotiate voltage and current. The Pixel 2 negotiates 9V at 2A (18W) when using a compliant charger. If the cable is damaged or the port is dirty, the phone falls back to 5V at 1A (5W) or less—that’s the “slow” you see. This is why the cable matters more than the charger: a cheap cable may physically fit but lack the internal wiring for 3A current.

Another factor is the phone’s thermal management. If the phone is hot (e.g., left in a car or used while charging), it will reduce charge speed to protect the battery. You’ll see the same “Charging slowly” message even with the correct charger. Let the phone cool down and try again.

Common Mistakes That Make It Worse

Using a phone charger from another brand. Many Android phones use Qualcomm Quick Charge, which is not the same as USB-PD. A Quick Charge charger may not fast-charge a Pixel at all.
Using a USB-A to USB-C cable. Even if it fits, most USB-A ports only supply 5V/2A (10W). You need a USB-C to USB-C cable for 18W.
Ignoring the “Charging slowly” notification. It’s not just a suggestion—it’s the phone telling you exactly what’s wrong.
Replacing the battery yourself. The Pixel 2’s battery is glued and fragile. A botched replacement can damage the charging IC, making the problem permanent. If you suspect battery health, use a repair service.

How to Check Your Actual Charge Speed

You can’t see wattage on the lock screen, but you can estimate it. The phone shows “Charging rapidly” when it’s drawing above 10W, “Charging” for 5–10W, and “Charging slowly” below 5W. For a precise number, install a free app like AccuBattery (it reads the battery’s voltage and current from the system). A healthy Pixel 2 on the original charger should show around 3,000–3,600 mA at the start of a charge. If you see 1,000 mA or less, the port or cable is the problem.

When to Consider a Battery Replacement

If you’ve cleaned the port, used the original charger, and rebooted, but the phone still charges slowly, the battery may be degraded. Lithium-ion batteries lose capacity and increase internal resistance over time. That resistance limits the current the battery can accept, so the phone slows charging to avoid overheating. Symptoms include:

Battery drains faster than before
Phone shuts off at 20–30%
Charging takes 4+ hours from 0%

A professional battery replacement (around $50–$80 at a repair shop) is the only real fix. The phone is old, but a new battery can make it feel like new again. Do not attempt it yourself unless you have experience with adhesive removal and delicate ribbon cables.

Frequently Asked Questions

Why does my Pixel 2 say “Charging slowly” even with the original charger?

Most often it’s a dirty port. Even if the plug looks seated, a thin layer of lint can prevent the data/charge pins from making full contact. Clean it gently with a toothpick. If that doesn’t help, the original cable may have a broken wire—try a different USB-PD cable.

Can I use a 30W charger to charge my Pixel 2 faster?

No. The Pixel 2’s charging controller is limited to 18W. A higher-watt charger will still negotiate 18W, so you won’t see any speed increase. It’s safe, but not faster.

Is wireless charging available on the Pixel 2?

No. The Pixel 2 and 2 XL do not have wireless charging coils. Only the later Pixel 3 and newer models support it. If you want wireless charging, you’d need a different phone.

Does using the phone while charging slow it down?

Yes, especially if you’re playing games or using GPS. The screen and processor draw power, so the net charge rate drops. You may see “Charging slowly” even though the charger is fine. Put the phone down and let it charge without use for 30 minutes.

My Pixel 2 charges fast for a few minutes, then slows down. Why?

This is thermal throttling. The battery heats up, and the phone reduces current to protect it. It’s normal in warm environments or if the phone is in a case. Remove the case and charge in a cool room. If it happens in a cool room, the battery may be failing.

Will a factory reset fix slow charging?

Only if a software bug is causing it. A reset clears all apps and settings, which can resolve battery-draining background processes. But if the issue is hardware (port, cable, battery), a reset won’t help. Try the other fixes first, then reset as a last resort.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

More in this bed

The whole Tech How-To bed →