BLP877 battery model name: Realme C-series and Narzo 50i Prime battery, 5000 mAh

Which phones use the BLP877 battery model name

The letters BLP point to the Oppo, Realme and OnePlus group. They do not name the exact phone. For BLP877, the phones in the table below come up most often in listings. All are budget or lower mid-range Realme models with a 5000 mAh class battery, which makes a shared pack believable, but a listing is not proof.

Phones with similar names are the usual trap. The Realme 8i has its own page, and the Realme Narzo 50A is a different phone from the Narzo 50i Prime. If your phone is not in the table, do not take it for granted that BLP877 fits.

How to confirm BLP877 before you pay for a replacement

A code match from a list is only the first step. The label inside your phone has the final say. Most Realme and Oppo phones in this class are sealed, so the label can be seen only with the back open. Ask the technician to open the phone first, read the code aloud and show it to you. Order or fit a new pack only after that.

Capacity alone never settles the question. Two packs can both say 5000 mAh and still differ in shape or plug. Match the code first, the connector second and the mAh third.

Rated versus typical mAh for BLP877

Adverts and parts listings give 5000 mAh, which is the typical capacity. Makers usually also stamp a somewhat smaller rated (minimum) value on the pack. That rated value is not confirmed for BLP877, so look at the label on the pack in your hand and not at a web page.

To compare energy between packs, use watt hours: mAh times volts, divided by 1000. As an example only, a 5000 mAh pack at 3.87 V gives about 19.4 Wh. The voltage for this code is not confirmed, so find the voltage line on your label before doing this sum.

Real use depends on the screen, network signal and the apps you run. The phones in this list will not all last equally long on the same 5000 mAh, because their displays and software differ.

Codes that look like BLP877

Oppo and Realme codes are close in spelling, and one digit changes the phone list. Faint print makes 7 and 1, or 8 and 3, hard to tell apart. Before taking a pack, compare it with these pages:

• BLP875 differs by one digit, so it has a separate phone list.
• BLP885 is another near neighbour in print, with different phones.
• BLP883 is also close, and the same caution applies.

All of these sit on the hub page, the Oppo battery list. If the last digits are unreadable, ask the counter for a photo taken in good light.

Symptoms of a tired BLP877 pack

First check whether apps are draining the phone or the signal is weak, using the tips on why the phone loses charge quickly. After that, go through the battery health check guide one step at a time.

Getting a new BLP877 pack fitted

Pulling apart a sealed phone at home can harm the screen, the flex cables and the cell itself. A safer choice is to give it to the brand's authorised service point, or to a local technician you have used before. Carry the box or a photo showing the model number. Ask the technician to check that BLP877 matches the battery currently fitted inside.

Warning signs on a new pack are easy to see:

• It feels clearly lighter than the old pack.
• The printing looks blurred and the batch information is missing.
• It shows a much bigger mAh figure for the same physical size, which is not believable.

For the wider picture on getting a battery swapped, read mobile battery replacement.

Daily care for a budget Realme with this battery

Heat does most of the harm to these phones over time. Avoid charging in a warm room, under a pillow or out in the sun. If the back feels hot, take off a snug case. Gaming or video calls while plugged in make the phone hotter still.

Use the charger that came in the box, or any charger rated equal to it or lower. If the plug end turns hot, or the phone charges only when the cable sits at one angle, change the cable. Once the battery is almost full, pull the plug when you can, rather than keeping it connected all night, every night.