For the Realme 7i, parts sellers mostly give the BLP771 battery model name, listing it at 5000 mAh typical and 3.87 V. BLP marks the Oppo family of brands, Realme included. A few sellers add the Realme 6i, which was sold in more than one version, so hold that match in doubt until your own cell confirms it.
Searches arrive in many spellings, such as "blp 771 battery model name" and "blp771 battery model". Every one of them refers to this single Realme 7i pack. BLP771 is printed on the cell label inside the 7i. The Realme 7i has a sealed body, so you will see that label only after a technician opens the back.
Quick facts
Step by step
Read the phone name and model number
Open Settings, then About phone, and note the device name and model number. If you cannot find it, type model in the Settings search bar.
Have the old cell label read
After the back is opened, the label should show
BLP771, a voltage and a capacity line. Take a clear photo before the pack leaves the phone.Compare the new pack with the old one
Put both packs side by side. The code, the size of the pack and the shape of the connector should all agree.
Judge weight and print
A good pack feels about as heavy as the old one and has crisp print with batch details. A light pack with a very large mAh claim is a bad sign.
Which phone uses the BLP771 battery model name
Most listings match this code to a single phone: the Realme 7i. The BLP prefix points only to the Oppo, Realme and OnePlus family. It says nothing about which handset. That is why the table below shows how sure each match is.
| Realme model | Status | Note |
|---|---|---|
| Realme 7i | Listed by most sellers for the 7i | 5000 mAh typical, listed at 3.87 V |
| Realme 6i | Named by some listings only | Check the label before ordering |
| Realme 7 | Not matched here | Separate phone, see its own page |
The full set of Oppo group codes is gathered on the hub for all Oppo group battery codes. If your old pack says BLP771, that label is stronger than any table.
Realme 7i or Realme 6i: why the version matters
The names look like twins, yet the two phones are different products, and a phone name can carry more than one version for different markets. A version sold in one market may carry a pack with a different capacity from another. Listings that name both phones for BLP771 therefore deserve a second look.
Read the RMX number from About phone or the box and hand it to the repairer along with the name Realme 7i. For a Realme 7 without the letter i, open the Realme 7 battery page instead, because it is a different phone.
One customer asked for "a Realme 7 series battery" and was offered a 5000 mAh pack with a near-identical code. On the bench, the old label read BLP771, so the technician compared the new pack with it letter by letter. Only the exact match went in.
There is a second wrinkle. Other sellers file the Realme 7i under BLP803 instead, and this site has not been able to settle which code belongs to which 7i version. Until a second source does, treat both as possible and order only what the outgoing 7i cell says.
Rated versus typical capacity for BLP771
The figure 5000 mAh is the typical capacity from listings, the one used for adverts and spare part pages. Makers often print a slightly smaller rated (minimum) value on the cell label. No BLP771 rated figure is confirmed here, so read the minimum off your own 7i cell.
For watt hours, take mAh, multiply with volts, then move the decimal three places left. For 5000 mAh at 3.87 V, that gives about 19.4 Wh. Two packs of equal mAh but different voltage are not equal in energy, so do not compare mAh alone.
The 7i's screen time varies with display, signal, brightness and apps, so 5000 mAh is not a promise of fixed hours.
How to confirm the code when buying a new pack
Searching by phone name alone causes most wrong BLP771 orders. Keep the 7i's RMX number, the old BLP771 label and a look at its connector together when ordering.
- Ask the repairer to show the code printed on the new pack, not only on the box.
- Check that the capacity is close to what the old label showed.
- Ask for a return option in case the pack does not seat in the phone.
Keep the old pack photo in your gallery. If the new pack misbehaves, you can show the code to the service centre without opening the phone again.
Codes that look close to BLP771
Oppo family codes start with BLP and differ by a digit or two, so one slip gets you another phone's pack. Some neighbours people mix up with this one are BLP793, BLP731 and BLP727. Each code page carries its own phone list, so two Realme packs of a similar size are not interchangeable.
- Digits 7 and 1 look alike on worn print, so use bright light.
- Equal capacity does not mean equal connector, so a 5000 mAh pack with another code may not seat.
- The plain Realme 5 is another phone; see the Realme 5 battery page.
Signs that a BLP771 pack is wearing out
| Realme 7i sign | Why it happens | BLP771 action |
|---|---|---|
| Percentage drops in big jumps | Aged cell, weak readings | Test the 7i, then plan a new BLP771 |
| 7i dies with a fifth to a third left | Cell cannot give peak current | Have it tested at a service centre |
| Screen lifts or back panel gaps | Swollen cell | Unplug it and visit the same day |
| 7i warm while idle | Worn BLP771 or a stuck app | Restart, remove the cover, get it checked |
Rule out apps and weak signal on the fast battery drain page, then follow the battery health check for the 7i.
A battery that is swollen, overheating, seeping or dented can catch fire. Unplug the 7i, leave the swollen BLP771 alone and keep the phone well away from heat. Carry it to a service centre. Aftermarket BLP771 packs often print an impossible capacity, so accept only one with your exact code.
Fitting a new BLP771 pack the safe way
The Realme 7i is sealed, so opening it is work for a trained hand. Use Realme service or a well reviewed repairer, and give them the RMX number with BLP771.
Warning signs on a copy pack:
- It is noticeably lighter than the pack you removed.
- The BLP771 print is fuzzy and the batch line is missing.
- It claims well over 5000 mAh, which this size of cell cannot honestly store.
Fitting advice for any phone is in our swap guide. After the swap, let the phone charge fully once and watch the first few days for heat or sudden drops.
Frequently asked questions
Which phone has the BLP771 battery model name?
Most listings match BLP771 to the Realme 7i, at 5000 mAh typical and 3.87 V. Some also name the Realme 6i, so read the label on your old cell to be sure.
Is BLP771 the Realme 7i battery model?
Most sellers agree it does. With the 7i back removed, a technician can read the code and confirm it.
How many mAh is the BLP771 battery?
Listings give 5000 mAh typical. The 7i cell's rated line may sit a little under 5000, so check yours.
What is the difference between BLP771 and BLP 771?
Nothing. Yes. Searchers often split BLP and 771 with a space. The code on the label is written without a space.
Can I fit a BLP793 or BLP731 pack in place of BLP771?
Do not assume it. Every BLP code carries its own phone list and connector. Fit only the code your old label shows.
How can I tell a fake BLP771 battery?
A bad BLP771 feels light, prints blurrily, lacks batch details and claims far beyond 5000 mAh. Compare it with the 7i's old cell before fitting.