The BN62 battery model name, as spare part listings give it, points to four phones: the POCO M3, Redmi 9 Power, Redmi 9T and Redmi Note 9 4G. Each is shown with a 6000 mAh typical Li-ion polymer pack, and the maker group is Xiaomi. If you found "bn 62" on a loose battery, it most likely came out of one of these four. It is a big, thick cell, one of the larger packs in the Redmi and POCO range.
Take care with the name Redmi Note 9 4G. The plain Redmi Note 9 and the Redmi 9 are most often listed under a different code, so a pack for one may not suit the other. The code is printed on the pack's own sticker, which a technician reaches after opening the back. Use this page to narrow the choice, and let the sticker on your old pack decide.
Quick facts
Step by step
Write down the phone name and model number
Open Settings and tap About phone. Note the device name and model number, or type model in the Settings search bar if it is not on the first screen.
Compare your model number with the phone table
The model numbers listed for each phone are in the phone table on this page. A number that is not there needs a closer look at the label.
Have the old pack read, not guessed
On a sealed phone, ask the technician to open the back and read the sticker.
BN62should appear next to the capacity.Hold the new pack beside the old one
Check the size, the connector shape and the printed code. The new pack should match the old one in thickness and weight.
Save a picture of the old label
Take a clear photo before the old pack goes in the bin. It helps if you need to return or compare later.
Which phones use the BN62 battery model name
Spare part listings from several sources agree on the same four names. The letters BN only tell you the Xiaomi group, so the phone list below is what matters. In these listings the POCO M3 and the Redmi 9 Power share one body and one pack.
| Phone | Model numbers in listings | Note |
|---|---|---|
| POCO M3 | M2010J19CG, M2010J19CI | The CI version is the one listed for India |
| Redmi 9 Power | M2010J19SI | Same body and pack as the POCO M3 in listings |
| Redmi 9T | M2010J19SG, M2010J19SY | Check your box, as the version may differ by market |
| Redmi Note 9 4G | Not confirmed here | Do not confuse with the plain Redmi Note 9 |
Model numbers come from listings, so compare them with the number on your box. Every other Xiaomi, Redmi and POCO code is laid out in the Redmi battery model list.
Redmi Note 9 4G is not the plain Redmi Note 9
This is where most counter errors happen. The name Redmi Note 9 covers more than one phone. The Redmi Note 9 4G is a separate model from the one most Indian buyers know, and listings give it BN62. The ordinary Redmi Note 9 and the Redmi 9 are more often listed with BN54, a smaller pack. See the BN54 page for its own phone list.
An owner of a Redmi 9 Power walked in and asked for a "Note 9 pack". A Note 9 pack was ready in the drawer. The technician looked at the old sticker, saw BN62, and insisted on that code. The drawer pack would have been the wrong size.
When you search, add the full phone name and the model number, not just the series.
What 6000 mAh means: typical and rated capacity of BN62
The 6000 mAh number is what listings and adverts quote as typical capacity. The sticker often carries a second, lower figure, the minimum or rated value. Listings do not agree on that value for BN62, so your own pack's label is the place to look.
BN62's watt hours are mAh times volts, then divided by a thousand. Listings give about 3.8 V, so 6000 mAh comes to about 22.8 Wh. Treat that as an estimate until your label confirms the voltage.
A big pack gives long use, but it does not decide everything. Screen-on time still depends on the display, the signal, brightness and your apps. A bigger cell also takes longer to fill, and the time depends on the charger you use. Similar big-battery handsets are collected on the 6000 mAh phones page.
Confirm the label first, then order the replacement
Do not order by phone name alone. The same marketing name can hide two hardware versions with two batteries. Match three things: the code, the phone model number and the connector.
- Code on the old sticker reads
BN62, not BN54, BN63 or BN66. - Phone model number is in the table above or matches the label of the old pack.
- New pack has the same connector and a similar thickness as the old one.
If the old pack is swollen and the label is hard to read, ask the technician to photograph it before removal and match the connector shape too.
The general method for any code is in the guide on finding the name of a phone battery.
Neighbouring codes that are easy to mix up with BN62
Xiaomi codes run in a series, so neighbouring numbers look alike on a worn sticker. Every code below has a page of its own with its own phones, and none should be treated as a swap for BN62.
- BN54 is the battery code that shows up most for the ordinary Redmi Note 9, and also for the Redmi 9.
- BN63: a nearby number, one digit away, for different phones.
- BN66: another close code with its own phone list.
A 6 and an 8 or a 3 and an 8 can blur together on a faded print, so read the code in bright light. Two packs may show equal mAh yet differ in code, and then the connector or size can differ too.
Signs of a tired BN62 pack
A big pack ages like any other. After many charge cycles the cell holds less, and in a phone like the POCO M3 you will see the drop first as shorter days.
| Symptom | Probable cause | Next move |
|---|---|---|
| Full charge lasts half a day | Cell worn after many cycles | Read the health page, then book a test |
| Percentage jumps from 30 to 5 | Weak cell or a poor copy pack | Compare with a known good pack at the counter |
| Back panel gap or bulging screen edge | Swollen cell | Switch off and see a technician today |
| Charging stops at a random level | Heat cut-off, cable or port fault | Try another cable, then have the port checked |
Heavy apps and weak signal also drain a phone fast, so go through the page on a phone that drains fast first. After that, the battery health page helps you judge the pack.
If the back lifts, the display edge bulges, or the pack gets hot or leaks, stop charging and power down. Rest the phone on a bare tile or stone floor, well away from anything that burns. Never squeeze, bend or stab it. Poor copies with inflated capacity claims are widespread, so take only a pack that shows the right code.
Fitting a new BN62 pack the safe way
These phones are sealed, and the back is held with adhesive, so the work is for a technician. Go to an authorised service centre, or an experienced repair person who will show you the old label. Ask them to match BN62 on both packs before the new one is connected.
A 6000 mAh pack is thick and heavy, so a copy is easy to feel in the hand:
- When you hold the replacement pack, it should not feel much lighter than the old one from the phone.
- The printing is blurred and there are no batch or date marks.
- The label claims much more than 6000 mAh for the same size, which this cell cannot honestly hold.
More on fitting is in the battery replacement guide.
Everyday care for a large battery
Owners of a 6000 mAh phone often leave it charging through the night because the battery lasts long. Heat and sitting at 100 percent for hours wear the cell faster. Keep the phone on a table or shelf while it charges, never on bedding, and take off a bulky cover whenever it runs warm.
Start with the original charger from the phone's packaging. Another charger works too, as long as its power rating is the same or lower. A cable whose plug tip gets hot should be replaced. Say the phone still shuts down while the battery shows a fair level, and this continues after you reboot it and charge it to 100 percent. Then get the battery tested first, and only after that think about buying a new one.
Frequently asked questions
Which phones are listed for BN62?
Listings match BN62 to the POCO M3, Redmi 9 Power, Redmi 9T and Redmi Note 9 4G. The pack is 6000 mAh typical. The sticker on your old battery gives the final answer.
Is BN62 the POCO M3 battery model?
Yes, most listings give BN62 for the POCO M3, including the version listed for India. A technician can confirm it from the label once the back is open.
What capacity does BN62 have?
Listings show 6000 mAh typical. The rated value printed on the pack can be a bit smaller, so look at your own label.
Is the Redmi 9 Power battery the same as BN62?
Most listings say yes, and they share the pack with the POCO M3. Check the code on the sticker before ordering.
Can I use a BN54 battery in place of BN62?
Do not assume it will fit. BN54 is listed for different phones and a smaller pack. Check the full BN62 code and its plug.
How do I spot a fake BN62 battery?
Copies tend to weigh less than the original, show blurred printing with no batch marks, and boast a capacity well beyond 6000 mAh. Put the old and new packs side by side.