Xiaomi Charging Slowly: Diagnosis Steps
Is your Xiaomi charging slowly?
You may feel like the percentage is running round and round in circles before it gets to where you want it. All good one day, and the next day you connect it to a power source and … not much going on there. The annoying thing is you never quite know if it’s the phone, the charger or one single smidgen of fluff that got lodged sickeningly in your port.
So, here’s a real-world, no-fuss guide from Phone Repairs Wollongong to help you figure out what’s going on. We’ll start with the easiest checks first and then move on to the more involved stuff, just so you don’t waste your time or money replacing an item when there may be no need.
First, confirm it’s actually “slow”
People say “slow charging” for a few different problems:
- It charges, but painfully slowly.
- It starts charging, then stops.
- It only charges at a weird angle.
- It says “charging” but the percentage barely moves.
Quick test: Plug it in, put the screen off, and leave it for 10 minutes.
If you gain only 1–2% (or nothing), yep—something’s up.
Also, if your Xiaomi used to show fast charge / rapid charging / turbo charging (wording depends on model) and it doesn’t anymore, that’s a big clue. Get details on Xiaomi Phone Repairs in Wollongong.
The most common reasons Xiaomi charging gets slow
Before we jump into steps, this is usually the cause (in plain English):
- Cable is worn out (even if it looks fine)
- Charger brick isn’t strong enough (or doesn’t match fast-charge standards)
- USB-C port is dirty (lint is the classic)
- Port is loose/damaged
- Phone is too hot, so it slows charge to protect the battery
- Apps are chewing power while you’re trying to charge
- Battery is ageing
- Charging circuit has an issue (less common, but it happens)
Now, let’s diagnose it properly. Looking for a Android Repairs in Wollongong?
Step-by-step: Xiaomi charging slowly diagnosis steps
1) Swap the power point (seriously)
Start simple: plug the charger into a different wall socket.
Skip the power board for testing—some boards drop power or have worn sockets.
Also avoid charging from a laptop USB port if you’re diagnosing. Laptop charging is often slower by nature.
2) Try a different cable first (it’s the usual culprit)
This is the big one. Cables fail internally all the time.
Even if your cable looks perfect:
- It might be broken near the connector.
- It might not support the power your phone wants.
- It might be a cheap cable that bottlenecks charging.
Do this: Try a known-good cable (preferably original Xiaomi or a quality replacement).
If your charging speed suddenly improves, you’re done.
3) Check your charger wattage (and compatibility)
Xiaomi models vary a lot here. Some do 18W, others 33W, 67W, 120W—depends on your phone.
If you’re using a random charger:
- It may fall back to basic charging.
- It may not trigger fast charge at all.
- It may charge slowly even though it “works”.
Best test: Use the original Xiaomi charger if you still have it.
If that one is fast and the other is slow, the phone isn’t the problem.
4) Remove the case and reseat the cable
Sounds too easy, but thick cases can stop the plug from going all the way in.
Take the case off, push the cable in firmly, and check if:
- It clicks into place better
- Charging becomes more stable
- Fast charge appears again
If the cable still feels “loose” inside the port, keep going.
5) Clean the USB-C port safely (lint is brutal)
If you carry your phone in your pocket, this one’s extremely common.
Lint packs in tight and stops the connector from seating properly, so the phone charges slowly or disconnects.
Safe way to clean it:
- Turn the phone off
- Use a wooden toothpick or a soft plastic pick
- Gently scoop lint out (don’t stab inside)
- Don’t use metal tools
If you pull out a little felt-looking chunk and suddenly the cable fits deeper—yep, that was it.
6) Check for moisture or corrosion
If the phone was exposed to humidity, rain, or even a spill, charging can slow down to protect the device.
Look for:
- Moisture warnings
- Charging that starts and stops
- Strange discolouration in the port (green/grey marks)
If you suspect moisture, don’t keep plugging/unplugging over and over. That can worsen corrosion. Get details on Android Repairs in Shell Cove.
7) Cool the phone down (heat will slow charging)
Xiaomi phones can throttle charging speed when they’re hot. That’s normal protection.
Slow charging often happens when you:
- Game while charging
- Run video calls
- Use hotspot
- Charge in a hot car
- Charge in direct sunlight
Test: Let the phone cool down, then charge with the screen off.
If it speeds up, heat is the reason—not the charger.
8) Stop background drain while charging
Sometimes it isn’t “slow charging”… it’s “charging while losing power”.
Try this:
- Put the phone in Aeroplane Mode for 10–15 minutes
- Turn off hotspot
- Close heavy apps (TikTok, Instagram, YouTube, games)
- Reduce brightness
If the percentage climbs faster, your phone is charging fine—you were just using more power than you realised.
9) Restart and check battery settings (MIUI/HyperOS)
A simple restart clears weird charging behaviour surprisingly often.
Also check:
- Battery optimisation settings
- Any “battery protection” or “optimised charging” features
- Third-party “battery saver / cleaner” apps (some can cause chaos)
If you installed a dodgy cleaner app recently, uninstall it and retest.
10) Check signs of a damaged charging port
A damaged port can still charge—but it usually gets slow, unstable, or angle-dependent.
Watch for:
- Cable wiggles easily
- Charging cuts in and out
- It only charges when you bend the cable
- Data transfer to a PC is unreliable
- Fast charging never triggers anymore
If you’re seeing these, the port is very likely worn or damaged. Looking for a Android Repairs in Berkeley?
11) Consider battery age (older Xiaomi phones often show it)
As batteries age, charging can slow and the phone can feel unpredictable.
Battery-related signs:
- Battery drains fast after charging
- Phone warms up quickly while charging
- It jumps from 20% to 5% suddenly
- It shuts down early, even with “battery left”
If the phone is a few years old, a battery replacement can make it feel brand new again.
Related Articles:
» When to Consider Battery Replacement for Your Android Phone?
» Top Tips to Prevent Battery Issues on Your Android Phone
» How to Fix Android Phone Charging Slowly Problem?
» How to fix Android Phone Overheating?
» How to fix the Common Android Phone Issues?
12) When it’s not the cable/charger/port: charging circuit issues
If you’ve tried multiple chargers and cables, cleaned the port, and it’s still slow… it may be internal.
Possible internal issues include:
- Charging board damage
- Charging IC problems
- Liquid damage residue
- Physical damage from drops
That’s when a proper workshop diagnosis helps, because guessing becomes expensive.

When to book a repair in Wollongong
It’s time to get it checked if:
- You tried two different chargers and two different cables, no improvement
- The port feels loose or the cable doesn’t “sit” properly
- Charging drops in/out
- The phone only charges at an angle
- The phone gets unusually hot while charging
- Fast charging never shows anymore
At Phone Repairs Wollongong can check your charging current, look at the port closely and see whether or not you need to shell out for a charging port repair, battery replacement or something further into the phone.
FAQs: Xiaomi Charging Slowly: Diagnosis Steps
Most of the time it’s the cable, charger, or lint in the port.
Yes, absolutely. Some cables can’t carry enough power for fast charging.
Usually yes. Laptop USB ports often output less power than wall chargers.
Heat, background apps or dirty/loose port may result in speeds that are not consistent.
You might also see a message indicating fast-charge and you will notice the battery rising quite quickly in the first 20–30 minutes.
Yes. Lint stops the cable from plugging in fully, so charging becomes weak or unstable.
Yes, if you use a non-metal tool and you’re gentle. Don’t scrape hard inside.
Yes. Heavy use can drain power while it charges, so it looks slow.
The heat can be generated by fast charging, heavy use or the wear of the battery. You’re phone may be lowering the charging speed to protect itself.
