Parts listings mostly tie the BN63 battery model name to the Redmi 10 Prime, which Xiaomi ships with a 6000 mAh typical cell. Listings give the cell as Li-ion polymer with a nominal 3.87 V. Spare part entries tie the code to the Redmi 10 Prime model number 21061119BI.
People also type it as "bn 63 battery model name" or just "redmi 10 prime battery model". Xiaomi reused the Redmi 10 name across several handsets, and their cells differ. The plain Redmi 10, later versions and the Redmi 10 Power are not confirmed as BN63 phones. So your BN63 label and the Redmi 10 Prime model number together settle the order.
Quick facts
Step by step
Read the model number of the phone first
Open Settings, tap About phone and note the name and model number. If you cannot find the number, type model in the Settings search bar. Compare it with
21061119BIin the table below.Let the technician open the back
The Redmi 10 Prime is a sealed phone, so only a technician should lift the back panel. Do not pry at the pack yourself, because the adhesive and the connector are easy to damage.
Find BN63 on the cell label
The label carries the code
BN63along with capacity, voltage and batch marks. Ask for a photo of it before the old pack goes into the waste box.Compare the new pack with the old one
Put both packs side by side. The code, the shape, the connector and the weight should be close. A pack that is clearly lighter but claims more mAh is a warning sign.
Phones that use the BN63 battery model name
BN63 starts with the letters BN, which Xiaomi uses on many Redmi and POCO packs. BN names only the maker group, not the Redmi 10 Prime. For BN63, sellers agree on a single phone, the Redmi 10 Prime, with its 6000 mAh class cell.
| Phone | Model number | Status |
|---|---|---|
| Redmi 10 Prime | 21061119BI | Matched by most listings |
| Redmi 10 (other versions) | Read it under About phone | Not confirmed as BN63; check the label |
| Later Redmi 10 Prime refresh | Read it under About phone | Only some sellers list it; check the label |
| Redmi 10 Power | Read it under About phone | Not confirmed as BN63 |
If you began with the handset, our Redmi 10 Prime battery page answers the same question from the phone side.
What 6000 mAh means for this pack
The 6000 mAh figure is the typical capacity, the headline number in product descriptions. A battery label usually prints a slightly lower rated value as well. One listing gives 5880 mAh for this pack, which looks like that rated figure, but treat it as unconfirmed and read your own label.
Energy is easy to work out. Take 6000 and multiply by the nominal 3.87 V, which gives 23,220. Divide that by a thousand and BN63 holds roughly 23.2 Wh. Some listings show 4.45 V, and that is the top charging voltage of this type of cell, not the working voltage, so two listings that look different may describe the same pack.
A 6000 mAh pack can carry the Redmi 10 Prime through a long day of mixed use, but screen time still depends on brightness, signal and apps. Other big packs are compared on the 6000 mAh phones page.
Confirming BN63 before you pay
A listing that says Redmi 10 is not enough, because the name was reused across versions. Three checks keep you safe. First, match the phone model number. Second, match the code printed on the cell you are replacing. Third, match the connector and the pack shape to the old one.
A customer asked for a Redmi 10 battery and was shown a pack that looked the same size. With the Redmi 10 Prime open, the technician saw that the old label did not match the boxed spare. The swap was stopped before the pack was fitted.
If the old pack is still inside a closed phone, the box or the invoice may carry the model number. Our guide to finding a cell code explains the routine for every brand.
Similar codes that are easy to confuse with BN63
Close codes are the main reason for wrong orders. Xiaomi has many BN packs with only one digit or letter between them, and the print on a worn label can be hard to read. Every one has its own handset list, so none of them stands in for BN63.
- BN62 is the next number down and belongs to its own set of phones.
- BN5U is a Redmi pack with a similar looking name, so read its page before you trust a box that shows it.
- BN66 is a nearby number with a different phone list.
A 6000 mAh Xiaomi pack under another code may sit thicker or use a different plug in the Redmi 10 Prime. The whole family is laid out in the full set of Redmi, Xiaomi and POCO codes.
Failing pack: what you see and what to do
| 10 Prime symptom | Likely reason | What to do |
|---|---|---|
| One day of use shrinks to half a day | Worn cell after many charge cycles | Check Redmi 10 Prime health, then plan a BN63 |
| 10 Prime dies at 15 to 25 percent | Worn BN63 cannot give peak current | Have Xiaomi service test the BN63 |
| Redmi 10 Prime back or screen edge lifting | Swollen cell | Unplug the Redmi 10 Prime and go today |
| Phone is hot while idle on the charger | Worn BN63, a poor cable or a runaway app | Unplug, remove the cover, restart, then test |
Before suspecting BN63, rule out apps and a weak signal with our page on rapid drain. After that, see how much life is left by checking battery health.
A BN63 that is swollen, scorching, leaking or dented may ignite. Unplug the Redmi 10 Prime, leave the swollen cell untouched and keep it cool. Bring it to Xiaomi service. Cheap copies often print a capacity far above 6000 mAh, so buy only a pack that shows the code exactly.
Fitting a new BN63 pack safely
The Redmi 10 Prime is built with a glued back, and the pack sits close to the display flex and the board. Xiaomi service or a well rated repairer should open the Redmi 10 Prime. Tell them the phone model number and have them read BN63 off the old label.
Check three things on any new BN63 before it goes in:
- It weighs less than the BN63 that came out.
- BN63 lettering looks smudged and carries no batch or QR marks.
- It claims much more than 6000 mAh, which a Redmi 10 Prime sized cell cannot hold.
After fitting, charge the phone fully once and watch for heat at the back. More on fitting is in our replacement walkthrough.
Ask the shop to write the code and the date of fitting on the bill. If the pack misbehaves later, that note saves an argument.
Looking after a big pack
A large pack gives a long gap between charges, and that tempts people to leave the phone plugged in overnight. Warmth and long hours parked at full charge age BN63 quicker than daily use. Charge on a hard, cool surface, away from sun and pillows.
The Redmi 10 Prime's 18 W boxed adapter, or a similarly rated one, is the right charger for BN63. If the plug end of a cable gets hot, replace the cable. A 6000 mAh pack also takes longer to fill than a small one, so how long a charge takes depends on the charger watts, not only on the battery.
Frequently asked questions
Which phone uses the BN63 battery model name?
Most listings match BN63 to the Redmi 10 Prime, with 6000 mAh typical capacity. Other phones called Redmi 10 are unconfirmed for BN63, so check your own label.
Is BN63 the Redmi 10 Prime battery?
Most listings say yes, and the model number given with it is 21061119BI. Once the Redmi 10 Prime back is off, the BN63 print can be read directly.
How many mAh is the BN63 battery?
It is listed as 6000 mAh typical at a nominal 3.87 V, about 23.2 Wh. The rated value on the cell label can come out lower, and one listing shows 5880 mAh.
Can I use BN62 or BN5U in place of BN63?
Do not assume that. Each of those codes fits different phones with a different plug. Fit only a pack that shows BN63 and matches the old pack in shape.
Does every Redmi 10 use BN63?
No. The name Redmi 10 was used for more than one phone, and the battery differs between versions. The Redmi 10 Power and later Redmi 10 versions are not confirmed for BN63, so read the label.
How can I tell a fake BN63 battery?
A fake BN63 is light, blurrily printed with no batch marks and claims far beyond 6000 mAh. Match the weight, BN63 code and plug against the Redmi 10 Prime's old cell.