The BN53 battery model name points, in listings, to the Redmi Note 9 Pro, the Redmi Note 10 Pro and the POCO M2 Pro, with a Li-ion polymer pack of 5020 mAh typical. Owners also type it as "bn 53" or "mi bn53". All of these mean the same code.
Do not stop at the first match. The Redmi Note family has many look-alike phones, and the plain Redmi Note 9, the Note 9 Pro and the Note 10S are three separate cases. The code sits on the sticker of the battery itself, hidden under the glued back cover until a repairer lifts it. Use this page to narrow your choice, then let the label on your own pack settle it.
Quick facts
Step by step
Write down the exact phone name and model number
Open Settings, tap About phone and note the device name. If it is not on the first screen, type model in the Settings search bar. Also copy the model number printed on the box.
Have the old battery sticker read by a repairer
Once the back is lifted,
BN53appears on the sticker next to the capacity and voltage lines. Do not peel or pull the pack yourself, because the adhesive is strong.Lay the new pack next to the old one
The code, the outline, the connector and the pull tab should all match. Equal mAh on a different code is no guarantee of a fit, and the connector may not seat properly.
Check weight and print on the new pack
A good pack has crisp lettering, batch markings and a weight close to the old one. A light pack with a much bigger mAh claim is a warning sign.
Which phones use the BN53 battery model name
BN is one of the letter pairs Xiaomi prints on Redmi and POCO packs, but a prefix names only the maker group and never the exact phone. For BN53, several spare listings agree on three phones that share a large pack in the 5000 mAh class.
| Phone | Status | What to verify |
|---|---|---|
| Redmi Note 9 Pro | Matched by listings | Read the old sticker to be sure |
| Redmi Note 10 Pro | Matched by listings | Sold in several versions, so compare the model number |
| POCO M2 Pro | Matched by listings | Close relative of the Redmi Note 9 Pro |
| Redmi Note 9 Pro Max, Note 10 Pro Max | Added by some listings only | Unconfirmed, so the sticker decides |
| Redmi Note 9, Redmi Note 9S, Redmi Note 10S | Different phones | Do not assume BN53 |
Each phone has its own page: Redmi Note 9 Pro and Redmi Note 10 Pro.
POCO M2 Pro battery model name: why the search ends at BN53
Many owners type "poco m2 pro battery model name" because this phone shares its body style and battery size with the Redmi Note 9 Pro. That is why listings put both phones under one code. Still, the sticker inside your phone is the real proof, since a maker can change a supplier or a version during a production run.
If your POCO M2 Pro was repaired before, the pack inside may not be the original. An earlier copy can carry another code or an inflated capacity print. So have the old pack read first and compare it with this page.
One owner walked in with a POCO M2 Pro and asked for a Note 9 battery. The shelf held one Note 9 pack and one Note 9 Pro pack. The repairer lifted the back, read BN53 on the sticker and handed over the Pro pack. The plain Note 9 has its own separate pack, so the first choice would have been wrong.
5020 mAh typical: what the number tells you
The 5020 mAh value is the typical capacity, the one used in adverts and spare listings. Some adverts for the POCO M2 Pro round it to 5000 mAh. Packs from this maker normally carry a second, slightly smaller minimum value on the sticker. This page does not state that minimum, because your own label is a safer source than a guess.
To get energy, take the mAh, multiply it with the volts, then divide by 1000. Using the 3.87 V in the listings, 5020 mAh comes to about 19.4 Wh. Voltage ratings can differ between packs, so a second pack with equal mAh may hold a little more or less energy. Read the volts on the sticker as well.
Screen-on time depends on the chip, the 60 Hz or 120 Hz display setting, signal strength and brightness. A pack of this size usually carries a full day of normal use, but long gaming sessions and a weak network cut it short.
Neighbouring codes and look-alike phones around BN53
The usual counter mistake is a nearby code on the shelf. BN54 is one digit away, so open the BN54 page and read the phones listed there before you accept any pack printed that way. Another near code, BN52, also has a separate list.
- The Redmi Note 9 and the Redmi Note 9 Pro sound alike but are different phones. Match by the code on the label, never by the name.
- The Redmi Note 10S sits in the same family but is not confirmed as BN53. See the Redmi Note 10S page.
- Worn print makes 3 and 8, or 5 and 6, hard to tell apart. Read the sticker under a strong lamp or ask the repairer for a photo.
Every family code is gathered in the Redmi battery model list.
Warning signs of a tired BN53 pack
| Symptom | Cause | Action |
|---|---|---|
| Percentage drops quickly through the day | Cell has lost capacity after long use | Test the battery health, and arrange a new pack if it is low |
| Phone dies while it still shows 20 to 30 percent | Weak cell fails under sudden power demand | Ask for a load test at a service centre |
| Back panel rises or display bulges | Swollen cell | Unplug now and reach a service centre the same day |
| Phone is warm even when idle | Busy app, damaged cable or faulty pack | Restart, take the case off, have it examined |
Heavy apps and poor network can imitate a dying cell, so rule them out by reading why the charge disappears quickly. After that, follow the steps in the battery health check.
A bulging, hot or leaking battery is a fire risk. Unplug the charger, do not squeeze or poke the pack, keep the phone on a tiled or stone floor away from paper and cloth, and carry it to a service centre. Cheap replacements with inflated mAh labels are sold widely, so insist on a code that matches yours exactly.
Fitting a new BN53 pack the right way
These phones are sealed with a glued back, so the job belongs to a trained hand. Choose the brand's own service point or a shop with a good local name. Give them the model number from the box and from Settings, and ask the technician to compare BN53 with the old sticker.
When the new pack reaches you, watch for these warning signs:
- It feels noticeably lighter in the hand than the old pack.
- The lettering is blurred and no batch information appears.
- Its label promises far more than 5020 mAh, which this cell size cannot genuinely store.
Wider fitting advice is on the mobile battery replacement page.
Take a photo of the old label with your own camera before the pack is thrown away. If the repairer has to order again, the code is already in your gallery.
Daily care for a big 5000 mAh class pack
A pack this large takes hours to fill, so many owners keep the phone on the charger overnight. Heat and long stretches at full charge wear the cell sooner. Keep the phone off bedding and out of sun while it charges, and remove a bulky case when the body turns warm.
Use the adapter from the box, or a good one of equal or lower wattage, and replace any cable that heats up at the plug end. If the phone still switches off early after a restart and one complete charge cycle, get the battery tested first, since the fault may lie elsewhere.
Frequently asked questions
Which phone has the BN53 battery model name?
Listings match BN53 to the Redmi Note 9 Pro, the Redmi Note 10 Pro and the POCO M2 Pro, at 5020 mAh typical. A few sellers add other Note models, so go by the sticker on your old battery.
Is BN53 the POCO M2 Pro battery?
Most listings give it for that phone. The repairer can verify it from the sticker when the back is lifted.
How many mAh is a BN53 battery?
It is listed at 5020 mAh typical. The minimum value printed on the label is usually somewhat smaller, so check the number on your own sticker.
Can I fit a BN54 battery instead of BN53?
Not without checking. The two codes sit one digit apart and may suit different phones. Match the exact code, then look at the connector.
Does the Redmi Note 9 use the same battery as the Note 9 Pro?
Do not take that for granted. They are separate phones with their own packs. Read the code on the label of the phone you hold.
How do I spot a fake BN53 battery?
A fake is often lighter, has smudged print with no batch information and promises far above 5020 mAh. Put the new pack next to the old one and compare.