If you are checking the BLPA19 battery model name, most listings tie it to the Oppo A58 4G and the Oppo A38, with a rating of 5000 mAh typical at 3.91 V. The maker group is Oppo. Some sources add the Oppo A79 5G, but that match looks weak and is left out here, so read the sticker on the pack you are holding before you buy.
Many buyers type this code as "blp a19" with a space, or as "oppo blpa19 battery model". All of these point to one pack, properly written BLPA19. The code names the battery, not the handset. Each phone also carries a separate model number, such as CPH2577 or CPH2579, and the right order needs both numbers.
Quick facts
Step by step
Find the exact phone name and model number
Open Settings and go to the About page for your phone. If you cannot see the model number, type model in the Settings search bar. Listings use CPH2577 for the A58 4G and CPH2579 for the A38.
Ask for the old label to be read
Once the back is open, the code
BLPA19should be printed on the sticker beside the capacity and voltage. Leave the peeling and pulling to the technician.Compare the new pack with the old one
Lay both packs next to each other. The code, the outline and the connector end must match, and the capacity should be close to the figure on the old sticker.
Judge the weight and print
A good pack has crisp lettering and batch marks, and weighs about the same as the old one. A pack that feels very light for its size is a bad sign.
Phones that use the BLPA19 battery model name
The letters BLP appear on many Oppo, Realme and OnePlus batteries, so the prefix alone cannot name your phone. The phone list has to come from matching. For BLPA19, most spare part listings agree on two phones: the Oppo A58 4G and the Oppo A38. The Oppo A79 5G turns up in only some of them.
| Phone | Phone model number | Status |
|---|---|---|
| Oppo A58 4G | CPH2577 | Matched by most listings; confirm on the label |
| Oppo A38 | CPH2579 | Matched by most listings; confirm on the label |
| Oppo A79 5G | Not confirmed here | Seen in some listings only; check before buying |
| Oppo A58 5G | Not confirmed here | Different phone from the A58 4G; do not assume |
The word 4G after A58 matters. Oppo sold more than one A58 version, so read the full name on the box. If your old label says BLPA19, that label settles it better than any list. The full family is on the Oppo battery list.
Phone model number versus battery code
At the counter, "A38 battery" and "CPH2579 battery" are often treated as one thing. They are not. CPH2579 identifies the handset. BLPA19 identifies the cell inside it. A listing that reads "battery for Oppo A38 (CPH2579) BLPA19" gives you both, which is the safe way to describe a pack.
Before ordering, note three things: the phone name, its CPH number, and whatever is printed on the battery sticker. If the sticker is worn and unreadable, ask the technician to compare the size and the connector with the new pack.
A customer brought an Oppo A38 and asked for a pack by capacity alone, saying any 5000 mAh would do. The counter held two packs of that rating, one coded BLPA19 and one with a different code. Only the BLPA19 pack matched the sticker on the removed battery, and the other one had a different connector end.
Rated and typical capacity of BLPA19
Listings give BLPA19 as 5000 mAh, the headline number used in adverts and spare part pages. Packs usually print a slightly lower minimum (rated) number on the sticker too. For BLPA19 that minimum could not be confirmed, so take it from the sticker once the back is open.
For the stored energy in Wh, multiply the mAh figure by the voltage and divide by 1000. At the listed 3.91 V, this pack works out to about 19.55 Wh. When comparing two packs, look at the volts as well as the mAh, because a different voltage rating means a different amount of stored energy.
How long a charge lasts depends on far more than the mAh figure. The display, brightness, signal strength and your apps all count. A pack of this rating in an everyday phone usually gets through a normal day, but your own result will vary.
Codes close to BLPA19 that people confuse with it
Oppo packs with the BLPA prefix are many, and one changed digit points to different phones. A pack that looks the same may not fit.
- BLPA17 and BLPA21 sit near BLPA19 in number order, but their pages list different phones.
- BLPA79 can be misread as BLPA19 when the lettering is faint, because the 1 and the 7 can look alike on a worn sticker.
- BLP codes without the A, such as BLP805, belong to other phones. Do not swap them in.
Never choose a pack because its capacity matches. Choose it because the whole code matches, then check the connector.
Signs that a BLPA19 pack is giving up
| Symptom | Common cause | Next move |
|---|---|---|
| Level drops quickly soon after unplugging | Cell holds less than it once did | Test it, then book a replacement |
| Handset goes dark with some percentage still showing | Worn cell sags under a sudden demand | Get it checked by a technician |
| Back panel gaps or screen lifts | Pack has puffed up | Power down and head to a service centre soon |
| Warm even when idle | Bad pack, or an app busy in the background | Restart, remove the case, then get it tested |
Quick drain is not always the battery. Look at the reasons a battery empties fast first, then run the steps in the battery health guide to decide.
If the pack looks puffed, feels hot, smells odd or leaks, power the phone down, leave it uncharged, do not press or bend it, and keep it well away from any heat source. A puffed cell can catch fire. Take it to a service centre. Cheap copies with an inflated mAh label are widespread, so accept a pack only when its code matches yours.
Getting a BLPA19 pack fitted without trouble
Both the A58 4G and the A38 are sealed phones, so do not try to open them at home. Carry the handset to an authorised Oppo counter or a reliable repair technician. Give them the phone name, the CPH number and the code BLPA19, and let them compare it with the label on the removed battery.
Watch for these signs of a weak copy:
- It feels noticeably lighter than the original.
- The lettering is blurred and batch marks are missing.
- The label shows a capacity well above 5000 mAh in the same body size, which no honest pack can deliver.
For the general method of fitting and testing, read the replacement guide. If you are still unsure how to read a code, finding a battery model name explains each place it is printed.
Photograph the old battery label before it is discarded. That photo is your proof of the code the next time you need a pack.
Daily habits for a 5000 mAh pack
Heat and long stretches parked at full charge wear a pack faster than ordinary use does. Avoid charging on a mattress or in strong sun, and remove a bulky case if the handset runs warm while plugged in.
Use the charger and wire that came with the phone, or a well made one with the same rating. If a cable gets hot close to the plug, throw it out and get another. Whenever you can, pull the plug once the phone is nearly full instead of keeping it connected through the night. Suppose the phone still dies early even after a restart and one full charge cycle. In that case, ask a technician to test the cell before you choose to buy a new pack.
Frequently asked questions
Which phones are listed for BLPA19?
Most listings match BLPA19 to the Oppo A58 4G and the Oppo A38, at 5000 mAh typical. Some sources mention the Oppo A79 5G, so read the cell inside that phone before buying for it.
How many mAh is the BLPA19 battery?
The typical value given for this pack is 5000 mAh at 3.91 V. The rated value may be a little lower, and you can read it on the label of your own pack.
Is blp a19 the same as BLPA19?
Yes. Searches with a space, such as blp a19, mean the same code. The correct written form is BLPA19, with no space.
Is CPH2579 the battery code of the Oppo A38?
No. CPH2579 is the handset's model number, as listed for the A38. The battery code is BLPA19. Quote both numbers when you order.
Can I use a BLPA17 or BLPA21 pack in place of BLPA19?
Do not assume so. One character changes the phone list and sometimes the connector. Match the full code printed on the original battery.
How can I tell a weak BLPA19 copy from a good pack?
A poor fake often feels light in the hand. Its text may look blurry, it may lack batch codes, and it may claim a much bigger mAh number than 5000. Put it next to the genuine pack and check how heavy each one is and how the print looks.