This Redmi battery model list gathers the battery codes of Xiaomi, Redmi and POCO phones in one place, and sends you to a separate page for each code and each popular phone. The codes start with BN, BM or BP, and the letters only tell you the maker group, so the exact phone list always comes from the page of the code you hold.
Use it in two ways. If you have a loose battery, find the code printed on it. If you have a phone and need a replacement, find the phone name and note the model number under Settings, About phone. Either way, confirm the code on the old battery label before you order.
Quick facts
How to use this Redmi battery model list
Start with what you have in hand. If you hold a loose battery, read the code printed on it and look for that code in the first table below. If you hold a phone and want its battery code, look for the phone name in the second table. Each entry opens a page that answers only that one code or phone, with its confirmed phones, capacity and look-alikes.
This page does not claim a code to phone match on its own. A Xiaomi code names the maker group rather than the phone, and two phones with the same screen size can take different cells. Use this hub as a map, and let the child page and your own label decide.
First jot down the handset name, its About phone model number, and the old cell's code if visible. Both together remove most doubt.
How Redmi, Xiaomi and POCO codes are built
Xiaomi, Redmi and POCO batteries carry a code that starts with BN, BM or BP, followed by a number or a number and letter, such as BN5R, BM4Y or BP4K. The start of the code points to the Xiaomi group. It does not tell you the phone, the capacity or the age of the phone.
Do not try to decode the characters yourself. A code with a higher number is not always a bigger or newer battery, and two codes that differ by one letter, like BN5R and BM5R, can belong to different phones. Always go to the page for the exact code.
- BN codes are the most common group on this site, used on many Redmi and POCO packs.
- BM codes also appear on Mi, Redmi and POCO packs, including some older ones.
- BP codes are rarer, each with its own phone list.
Where the battery code is printed
The battery code is printed on the label on the cell itself, close to the capacity, voltage and batch details. Many present-day Redmi and POCO phones are sealed, so nobody sees this label until a technician removes the back panel. A few older models have a cover you can take off by hand, yet the pack should still be changed by the shop.
If the phone is still in use, you can find other clues without opening it. Open Settings, tap About phone and note the device name and model number. If the menu names differ on your phone, type about or battery in the Settings search bar. The box, the invoice and service records may also carry the model number, and spare part listings show the code for that model.
Our guide to finding a battery code has the full method.
Redmi, Xiaomi and POCO battery codes: every code page
These are the code pages of the family. Pick the code printed on your battery. Lines here stay neutral on purpose, and the phone match is explained on each page.
| Battery code | What the page covers |
|---|---|
| BN54 | Open to see which phones use BN54 and its capacity |
| BN53 | BN53: phone list, rated and typical mAh, look-alike codes |
| BN5R | What BN5R is, where it is printed and which model takes it |
| BM5R | Open to see which phones use BM5R and its capacity |
| BN5F | BN5F: phone list, rated and typical mAh, look-alike codes |
| BN46 | What BN46 is, where it is printed and which model takes it |
| BN5X | Open to see which phones use BN5X and its capacity |
| BN5D | BN5D: phone list, rated and typical mAh, look-alike codes |
| BN62 | What BN62 is, where it is printed and which model takes it |
| BN5C | Open to see which phones use BN5C and its capacity |
| BN5A | BN5A: phone list, rated and typical mAh, look-alike codes |
| BN5Q | What BN5Q is, where it is printed and which model takes it |
| BN45 | Open to see which phones use BN45 and its capacity |
| BN5G | BN5G: phone list, rated and typical mAh, look-alike codes |
| BP5E | What BP5E is, where it is printed and which model takes it |
| BN5H | Open to see which phones use BN5H and its capacity |
| BN5T | BN5T: phone list, rated and typical mAh, look-alike codes |
| BN5K | What BN5K is, where it is printed and which model takes it |
| BN37 | Open to see which phones use BN37 and its capacity |
| BN59 | BN59: phone list, rated and typical mAh, look-alike codes |
| BN56 | What BN56 is, where it is printed and which model takes it |
| BN63 | Open to see which phones use BN63 and its capacity |
| BN52 | BN52: phone list, rated and typical mAh, look-alike codes |
| BN5E | What BN5E is, where it is printed and which model takes it |
| BN5M | Open to see which phones use BN5M and its capacity |
| BN66 | BN66: phone list, rated and typical mAh, look-alike codes |
| BN36 | What BN36 is, where it is printed and which model takes it |
| BN47 | Open to see which phones use BN47 and its capacity |
| BN5J | BN5J: phone list, rated and typical mAh, look-alike codes |
| BN4A | What BN4A is, where it is printed and which model takes it |
| BN31 | Open to see which phones use BN31 and its capacity |
| BN8 | BN8: phone list, rated and typical mAh, look-alike codes |
| BN5U | What BN5U is, where it is printed and which model takes it |
| BM4Y | Open to see which phones use BM4Y and its capacity |
| BN5P | BN5P: phone list, rated and typical mAh, look-alike codes |
| BP4K | What BP4K is, where it is printed and which model takes it |
| BN44 | Open to see which phones use BN44 and its capacity |
| BM4W | BM4W: phone list, rated and typical mAh, look-alike codes |
| BN48 | What BN48 is, where it is printed and which model takes it |
| BP9 | Open to see which phones use BP9 and its capacity |
| BM3 | BM3: phone list, rated and typical mAh, look-alike codes |
Phone pages: find the battery for your Redmi, POCO or Mi phone
If you know the phone but not the code, use these pages. Some names cover more than one version, so check the exact model number before you trust any code.
| Phone | What the page covers |
|---|---|
| Redmi Note 9 Pro | Pack code, capacity and any sister phones for this model |
| Redmi Note 8 | Find the pack code for the Redmi Note 8 and what to check before buying |
| Redmi Note 7 | Redmi Note 7 battery details, with the model number to match |
| Redmi Note 10S | Redmi Note 10S: its battery code, capacity and any sister phones |
| Redmi 10 Prime | Find the pack code for the Redmi 10 Prime and what to check before buying |
| Redmi 9A | Redmi 9A battery details, with the model number to match |
| Redmi Note 11S | Redmi Note 11S: its battery code, capacity and any sister phones |
| Redmi 8 | Find the pack code for the Redmi 8 and what to check before buying |
| Mi A3 and Redmi A3 | Mi A3 and Redmi A3 battery details, with the model number to match |
| POCO C51 | POCO C51: its battery code, capacity and any sister phones |
| Redmi Note 10 Pro (phone page) | Its BN53 cell and what to check before buying |
| Redmi 7 | Redmi 7 battery details, with the model number to match |
The Mi A3 and Redmi A3 are separate phones. One page covers both names, so check your model number before ordering.
Rated and typical capacity on Xiaomi packs
Capacity is shown in milliampere hours, written mAh. Many Xiaomi packs show two numbers. The rated (minimum) capacity is on the battery label. The typical capacity is the larger figure quoted in adverts and parts listings. A pack may be sold as 5000 mAh typical while its label shows a slightly lower rated number. Each code page says which figure it gives.
Wh is a handy way to compare batteries that run at different voltages. Multiply mAh by the voltage. After that, 1000 goes in as the divisor. For instance, a 4500 mAh pack rated 3.85 V comes to roughly 17.3 Wh. Two packs may print the same mAh, but when each one runs at its own voltage, the energy they hold can differ slightly.
A bigger number is not always better for you. The same capacity gives different screen-on time on different phones, because the chip, display, signal and apps all matter. The page on what battery capacity means explains this, and the list of 5000 mAh phones shows how common that size is.
Mistakes that cost people a second trip
Most wrong purchases come from a handful of habits seen at the repair counter.
- Matching by phone name alone. Redmi names repeat across versions. The Note 10 and Note 10S differ, as do the Mi A3 and Redmi A3.
- Choosing by capacity only. Two batteries may show the same mAh, yet if their codes differ, the size or the connector can also be different.
- Reading one letter wrong. Faint print makes R, K, P and B look alike. Read the sticker under a bright light.
- Trusting a huge mAh claim. A pack promising far more than the original at the same size is a red flag.
- Not checking the connector. Before you fit it, place the replacement beside the old battery and see whether the shape and the connector look the same.
A customer brought a phone that kept shutting down and asked for a Redmi Note battery without saying which one. With the back open, the technician read the worn cell's label and found it matched none of the packs on the counter. The right pack was ordered by code, so the customer did not have to come back a second time.
Replacing the battery and spotting a poor copy
Have a sealed Xiaomi opened at authorised service or by a trusted repair shop. Give them your model number from About phone and ask for a code check against the worn pack. Ask to see the old label and photograph it, so you have the code if you must order again. More steps are in mobile battery replacement.
Cheap copies with inflated capacity claims turn up often. Check these signs on the new pack:
- It weighs visibly less than the original.
- The print has smudged, and no batch details can be read.
- The capacity is far above the original for the same size of pack.
- The connector or the shape differs from the old one.
A cell that has swollen, heated up, leaked or got a dent can catch fire, so stop using it right away. First, pull the plug of the charger out of the socket. Never press, fold or poke the cell. Move the phone to a spot away from any heat source, and get a trained technician to look at it soon. Also, never fit a pack whose code differs from the one on your phone, even when the shop owner claims it will work.
When the battery may be the problem
| Symptom | Possible cause | Next move |
|---|---|---|
| Percentage falls quickly | Aged cell, or a power-hungry app | Check apps first, then a health test |
| Phone dies while percentage is still shown | Voltage dips under load on a tired cell | A service centre can measure the cell |
| Screen lifts or back panel bulges | Cell has swollen | Stop charging and visit the same day |
| Handset warm while idle | Worn cell, bad cable or software fault | Restart, try another cable, then get it inspected |
Not every short battery life is a worn cell. Work through our list of drain causes before buying a pack, then run the health check. For cell chemistry, see our battery types page.
Frequently asked questions
Which battery does my Redmi phone use?
It depends on the phone. Redmi, Xiaomi and POCO packs use codes that start with BN, BM or BP. Find your phone or the code printed on your battery in the tables above and open its page.
Do all Redmi phones use the same battery?
No. Every Redmi phone may need a different battery, and even one phone name can be sold in variants with different packs. Look up the exact model number. Also match it with the battery code on the label of the pack you are replacing.
Can I use a BN battery in a phone that takes a BM code?
Do not assume so. Different letters and numbers mean different packs, often with a different size or plug. Buy the exact code your phone asks for.
Can the battery code be found without opening the phone?
On most sealed phones you cannot. The code is on the battery sticker. Under Settings, About phone you can read the model number, and the code for that model can then be checked on its page.
Does a higher mAh battery fit my Redmi phone?
Not safely by default. Another code may not fit, and a much larger mAh claim at the same size usually signals a fake label. Choose the code that matches your phone.
Should I replace a Redmi battery myself?
Most Redmi and POCO phones have a sealed body, so the best way is to let a company-approved service centre or a reliable local repair shop do the work. Never cut into or puncture a swollen battery.