The Redmi Note 9 Pro battery model name is BN53 in most listings, and the pack is sold as 5020 mAh typical. The code starts with BN, which tells you the maker group is Xiaomi. It does not tell you the exact phone, so the phone list below matters more than the letters.
People search this as "mi note 9 pro battery model name" or "note 9 pro battery model". The phone is a Redmi, not a Mi, so use the Redmi name when you speak to a technician. Read the code from the sticker on the cell inside your phone, and treat any list, including this one, as a second check.
Quick facts
Step by step
Write down the exact phone name
Open Settings, tap About phone and note the device name. If you cannot find the model number, type model in the Settings search bar.
Check the name on the box
The box carries the full name, such as Redmi Note 9 Pro or Redmi Note 9 Pro Max. First check whether your phone is a plain Note 9 Pro, a Pro Max or a Note 9, because the last one uses a different code.
Let the technician read the sticker
With the cover removed, the code
BN53should sit on the battery label beside the capacity. Do not pull or peel the pack yourself, because it is glued in.Compare old and new pack side by side
The new pack should show the same code, a similar size and weight, and the same connector. Refuse a pack whose code differs from your old label.
Redmi Note 9 Pro battery model name and the phones that share it
Most listings give the BN53 code for the Redmi Note 9 Pro. The same pack is listed for a few phones from the same period, which is common when a maker reuses one cell size across a family. The table shows what to trust and what to verify.
| Handset | Standing | Remark |
|---|---|---|
| Redmi Note 9 Pro | Named in most listings | 5020 mAh typical |
| Redmi Note 9 Pro Max | Named in most listings | Compare with the sticker on your pack |
| POCO M2 Pro | Named in most listings | Close twin of the Note 9 Pro family |
| Redmi Note 9 | Different code | Most listings give BN54 instead |
| Redmi Note 10 Pro | Unconfirmed | Never swap packs by guess; see its own page |
The full code page is BN53 battery model name, which lists every phone for the code and the look-alikes. The newer phone has its own page too: Redmi Note 10 Pro battery.
Where to read the code: battery label, box and Settings
The battery model name is printed on the pack itself, in small letters near the capacity, the voltage and a batch number. The Redmi Note 9 Pro is a sealed phone, so that label shows only when a technician opens it. This is done with gentle heat and a pry tool, and it is not a job for home.
Without opening the phone you can still narrow things down:
- The box shows the full phone name. Keep it, or take a photo of the sticker on it.
- Under Settings and About phone you will find the device name and the model number. Menu names change with the software version, so use the search bar and type about if they are not visible.
- An old service slip or invoice sometimes carries the battery code.
Ask the technician to photograph the old label before fitting the new pack. You will then hold the exact code for the next time.
Note 9 Pro, Note 9 and Note 9 Pro Max: sorting out the names
Three phones with nearly the same name sit side by side in the Redmi Note 9 range, and this is where wrong orders happen. The Redmi Note 9 Pro and the Redmi Note 9 Pro Max are listed with the BN53 pack. The plain Redmi Note 9 is listed with BN54, a code only one digit away. Both are sold at about 5000 mAh, so the capacity gives you no clue.
A pack with the wrong code may look right, and sometimes the connector or the shape is not the same. The safe rule is simple: match the code, not the capacity.
A customer asked for a Note 9 battery for a Note 9 Pro. The counter had a BN54 pack in stock and the mAh looked the same. The technician read BN53 from the cell removed from the phone and demanded that code before fitting anything.
Phones from the older Note range use other packs. For example, see Redmi Note 8 battery model, which uses a different code.
What 5020 mAh typical means for your phone
Sellers of shops and spare parts quote 5020 mAh for this phone. This number is the usual capacity of the cell. The minimum rating stamped on the cell body often reads slightly less. No one has verified that rating for BN53. To learn it, read the print on the battery you hold.
To work out how much energy two packs hold, look at the voltage on the label. Multiply it by the mAh and divide the answer by 1000. For example, a 4000 mAh pack at 3.9 V gives 15.6 Wh. At nearly the same voltage, a 5020 mAh pack would store just over 19 Wh.
Real use depends on more than the number. The big display, the signal, brightness and the apps on the phone all change how long a day lasts. A pack that is three or four years old will also hold less than its label says. If your phone has aged, read how to check battery health before you buy a new pack.
Signs the Note 9 Pro battery is wearing out
| Symptom | Cause | Next step |
|---|---|---|
| Charge drops by half in a few hours | Cell has lost capacity with age | Test it, then plan a swap |
| Phone turns off at 20 to 30 percent | Tired cell sags under load | Get the battery tested by a technician |
| Display lifts or rear panel bulges | BN53 has swollen | Unplug and get it checked the same day |
| Warm even while untouched | Faulty pack or a runaway app | Restart, remove the case, check again |
Background apps and weak signal can also empty a battery quickly, so go through the fast drain guide before blaming the pack.
A cell that is swollen, very hot, leaking or dented may catch fire. Pull out the charger and do not touch the phone. Keep it away from beds and sunny shelves, and show it to a technician. Many packs carry inflated mAh claims, so only fit one that has the exact code.
Replacing the pack and spotting a weak copy
Choose the maker's own service point or a repair shop with a good name. Tell them the exact phone name and have them compare BN53 with the old sticker before fitting. General steps are in mobile battery replacement.
A poor duplicate usually shows its true nature through small signs:
- Compared with the original pack removed from the phone, it seems much lighter when held.
- The lettering is blurred and there is no batch information.
- It claims 6000 mAh or more, far above the 5020 mAh of the original.
- The connector looks a little different from the old one.
A cheap pack with a big number tends to give a short day and may swell sooner.
Everyday care for a large 5020 mAh pack
Warmth wears out a battery quicker than cold. Do not charge the phone on a bed or under the sun, and remove a heavy case when the phone body turns warm. Staying at 100 percent through long nights also puts strain on the cell.
Stick to the original charger and cable, or pick one with the same wattage or less. Replace any cable that gets hot close to the plug end. When the phone shuts down too soon even after restarting and charging it fully, get a proper test done rather than guessing and buying a new pack.
For other Redmi packs and their phones, see the Redmi battery model list.
Frequently asked questions
What is the Redmi Note 9 Pro battery model name?
Most listings give BN53, sold as 5020 mAh typical. Confirm it by reading the sticker on your old battery.
Does the Mi Note 9 Pro use the same battery model as the Redmi Note 9 Pro?
People who type Mi Note 9 Pro usually mean the Redmi Note 9 Pro. Use the Redmi name, and match the code BN53 on the label.
Does the Redmi Note 9 Pro Max use the same battery?
Most listings give the Note 9 Pro Max the same BN53 pack. Since the names are close, still read the old label before you order.
Can I use a BN54 pack in the Note 9 Pro?
Do not assume so. BN54 is listed for the plain Redmi Note 9, and codes that differ may differ in shape or connector. Match the exact code.
How many mAh is the Note 9 Pro battery?
For this phone, the common capacity figure is 5020 mAh. The minimum rating stamped on the cell can read a bit less than that.
Can I change the Note 9 Pro battery at home?
The rear panel is sealed shut and glue holds the battery firmly in place. So it is best to let a service centre or a trusted repair shop do the work. Opening the phone at home can bend or damage the cell.