The Redmi Note 10S battery model is BN59, sold at 5000 mAh typical, with a rated (minimum) figure of 4900 mAh at 3.87 V. The same code is listed for the Redmi Note 10 (4G), so those two phones are treated as twins on this page. The code family is Xiaomi's BN series, which also covers many Redmi and POCO packs.
People search this as "note 10 battery model" or "mi note 10 battery model name", and that is where mistakes start. The Redmi Note 10S, the Redmi Note 10 and the Redmi Note 10 Pro are three phones, and most listings give the Pro a different code. Check your exact phone before you order anything.
Quick facts
Step by step
Read your exact phone name and model number
Open Settings, tap About phone and note the device name and the model line. For the Note 10S, listings use numbers beginning M2101K7B.
Look at the box label if you still have it
The retail box carries the phone name and model number on a white sticker. It does not print the battery code, but it tells you which phone variant you own.
Have the old pack read by a technician
With the back open,
BN59should appear on the battery sticker beside the capacity. Do not peel or lever the pack yourself.Compare the new pack with the old one
Place them side by side. The code, connector shape, size and weight should match closely before anything is fitted.
Redmi Note 10S battery model: which phones take the same pack
For the Redmi Note 10S, the code to ask for is BN59. The Redmi Note 10 in its 4G version is listed with the same code, which fits with the two phones being close siblings in size and class. Both are sealed phones, so the pack sits under the back panel.
| Phone | Model numbers seen in listings | Note |
|---|---|---|
| Redmi Note 10S | M2101K7BI, M2101K7BG, M2101K7BNY, M2101K7BL | Matched to BN59 by listings |
| Redmi Note 10 (4G) | M2101K7AI, M2101K7AG | Matched to BN59 by listings |
| Redmi Note 10 Pro | Different phone | Most listings give another code (BN53); read the label |
| Redmi Note 10 5G | Different phone | Not part of this match |
The full page for the code itself is BN59 battery model name. Use it if you hold a pack and want to know every phone it is listed for.
Note 10, Note 10S and Note 10 Pro are not the same battery question
Searches like "redmi note 10 battery model" and "note 10 battery model name" lump several phones together. Xiaomi sold the Note 10 family in many versions, and the 4G Note 10 and the Note 10S look nearly alike from the front. The Note 10 Pro has a bigger screen and a different camera set, and most listings match it to a different code, so do not order BN59 for it.
If you own the Pro, open the Note 10 Pro battery page. For the earlier generation, there is a separate page for the Note 9 Pro pack. A neighbouring code, BN53, has its own phone list and should not be swapped in by guess.
An owner asked for a "Note 10 battery" for a phone whose box said Note 10S. Two packs on the counter were both labelled Note 10. Before anything was fitted, the old pack was taken out, its printed code was compared with each new one letter by letter, and only the exact match was used.
Capacity: 5000 mAh typical or 4900 mAh rated
Two figures are in use for this battery. Adverts and the phone's spec sheet say 5000 mAh, the average value a healthy new cell should reach. Spare part listings often show 4900 mAh, the rated (minimum) value you would see on a sticker. Both describe the same BN59 pack, so do not treat either number as a fault.
Energy in watt hours comes from mAh times voltage, divided by 1000. Take 3.87 V: a 4900 mAh cell gives roughly 18.9 Wh, and a 5000 mAh cell gives roughly 19.4 Wh. Be wary if a seller shows a same-sized battery labelled 6000 mAh or higher. A cell this small in size cannot really hold so much charge.
Screen-on time varies with brightness, signal, the display refresh setting and your apps. How fast it charges depends on the adapter and cable you use, not the capacity number.
Where to see the code: phone, box and battery
The BN59 code is printed on the battery label only. It is not shown in Settings, and the box does not carry it. On a sealed phone like this, you can read it only once a technician has taken the back panel off.
- Settings: the About phone page gives the name and model number, which tell you the variant.
- Box: the sticker on the side gives the same phone name and model number.
- Battery: the code, capacity and voltage are printed on the sticker of the removed pack.
Ask the technician to click a clear picture of the sticker before the used pack is thrown away. It saves a second visit if the replacement does not match.
Signs the Note 10S pack is wearing out
A pack of this age shows its wear in a few clear ways. Not every drain problem is the cell, so rule out apps and weak signal first with the guide on quick battery drain.
| Symptom | Usual cause | Action |
|---|---|---|
| Percentage drops sharply after only a few hours off the charger | The cell now stores much less than when new | Run through the battery health check, then choose a new pack |
| Handset switches off suddenly although the display was showing plenty of battery left | Tired cell fails when the phone asks for a quick surge of power | Ask a service desk to run a load test on the battery |
| Back panel looks raised or screen edge lifts | BN59 has puffed up | Unplug the phone, stop all charging and get it to a service desk the same day |
| Hot to touch with no app open | Background app or a bad pack | Restart, take off the case, update apps, then have it inspected |
Is the back cover swollen, is the battery hot when you touch it, or can you see any leak? In that case, do not press it or poke it. Switch the Note 10S off and unplug the charger at once. Put it on a hard surface that cannot catch fire, then take it to a service centre. BN59 copies often shout an enormous mAh number from the label, so accept only a pack bearing the right code.
Getting a new BN59 fitted without trouble
The back of the Note 10S is glued shut, so let the brand's own service counter open it, or a shop that has done good work for you earlier. Give them the phone name and variant. Ask them to check that BN59 matches the old battery sticker. Basic steps that suit all phones are given in the mobile battery replacement guide.
Check the new battery closely before you put it in. A genuine pack has sharp, clear printing and a batch or date mark. It should also weigh about the same as your old one. If a pack feels much lighter, has blurry text, or promises far above 5000 mAh, it is a bad copy. The connector must match too. A pack with the same mAh value but another code might not fit.
If the phone is in warranty, check with the service centre first, because opening it elsewhere can change that cover.
Daily habits that protect a long-running phone
Many people keep the Note 10S in use for hours each day. Heat and sitting at 100 percent through the night wear a battery down the most. Keep it cool while charging, so avoid placing it under a pillow or on a sunlit sill. If the phone gets warm in games or video calls, take off a thick case.
Use the original charger if you have it, or one with a close rating. Throw away any cable whose plug is loose or gets hot. To look up other Redmi codes and phones, begin with the Redmi battery model list. If you are weighing the next phone, the Redmi Note 11S battery page will help.
Frequently asked questions
What is the Redmi Note 10S battery model?
The usual listing shows BN59, which is a 5000 mAh typical (4900 mAh rated) pack at 3.87 V. Check the label printed on your old battery to confirm.
Is the Note 10 battery model the same as the Note 10S?
Listings give BN59 for both the Redmi Note 10 (4G) and the Redmi Note 10S. The Note 10 Pro is a different phone, so check its own page.
How many mAh does the battery of the Redmi Note 10S have?
The phone is sold as 5000 mAh typical. Spare part listings show 4900 mAh, which is the rated minimum for the same pack.
Can I use the Note 10 Pro battery in my Note 10S?
No, it is better not to think so. Listings mostly show another code for the Pro, and its connector or dimensions may not be the same. Copy the full code from the pack now in your phone.
Can I change the Redmi Note 10S battery myself?
The body of this phone is sealed, so the safer choice is a repair shop you trust or a service centre. If you pry the back open with the wrong tools, you can damage the cell or the display.
Why does a new BN59 pack show a different mAh from the old one?
One may print the rated figure and the other the typical figure. Both are normal. A figure far above 5000 mAh is the thing to doubt.