Most spare part listings tie the BA61 battery model name to the vivo Y19s, a large battery budget phone. The pack is given as 5500 mAh typical at 3.89 V, a Li-ion cell. Even though the code starts with BA, it is not a Samsung pack. Samsung packs usually begin with EB-, as on the EB-BA217ABY page.
People type this code in several ways: "ba 61 battery model name" or "vivo ba61 battery model name". Older Vivo phones use short codes with a hyphen, such as B-S7, so BA61 looks unusual next to them. One or two sellers also mention the vivo Y04, a thin match you should confirm on your own cell.
Quick facts
Step by step
Find the exact phone name and model number
Open Settings, then About phone, and note the name and model number. If you cannot see it, type model in the Settings search bar. The box also shows the model number.
Have the back opened by a technician
The phone is sealed, so the label under the back panel is the only place that shows
BA61. Do not pry the cover or pull the cell yourself.Compare code, voltage and capacity lines
A genuine pack shows the code, a voltage near 3.89 V and a capacity near 5500 mAh. Read all three lines, not just the big number.
Check the connector and the shape
Put the new cell beside the old one. The flat cable end, the width and the length should match exactly before anything is fitted.
Which phone uses the BA61 battery model name
Most listings give BA61 for one phone: the Vivo Y19s. That is the only match to treat as likely. The listing for the Vivo Y04 is a single page, so it needs your own check.
| Phone | Status | Note |
|---|---|---|
| Vivo Y19s | Matched by most listings | 5500 mAh typical, listed at 3.89 V |
| Vivo Y04 | Single listing | Confirm on the label first |
The BA prefix tells you the maker is vivo, not which Y phone holds it. For other Vivo codes, open the list of Vivo codes, and for the wider group of makers see the Samsung and Moto list.
How to confirm BA61 before you pay for a pack
Ordering by the name Y19s alone is a gamble. vivo phones with almost matching names can use different cells, and a 5500 mAh pack carrying another code may refuse to sit flat. Start from the phone, then check the old cell.
- Write the model number from About phone.
- Get the technician to say the code aloud while reading the cell label.
- Photograph the BA61 sticker before the old cell leaves the counter.
- Order only if the code, voltage and capacity lines agree with the photo.
If the label is worn and you cannot tell BA61 from another code, ask for the phone's model number to be read off the box. It narrows the choice faster than guessing from letters.
BA61 capacity: 5500 mAh typical, and what rated means
The 5500 mAh figure is the typical capacity that listings and adverts quote. vivo cells often carry a rated minimum slightly below the advertised capacity. BA61's rated figure is unconfirmed, so read it from your Y19s cell.
A 5500 mAh BA61 at a typical 3.89 V holds roughly 21.4 Wh. With 5500 mAh at 3.89 V you get roughly 21.4 Wh. If a rival 5500 mAh cell has a different voltage, its energy will not equal BA61's, so read both lines.
The Y19s's endurance depends on its chip, brightness, signal and apps, so 5500 mAh is not a fixed number of hours. How fast it fills depends on the charger and cable you use.
Codes that look like BA61 but are not
The letters BA appear on packs from more than one maker, which causes real mix-ups at the counter.
- Samsung packs such as EB-BA217ABY carry the EB- prefix and belong to Samsung phones. Do not swap them in.
- Neighbouring numbers like BA62 and BA45 have their own pages. A close number says nothing about a shared phone.
- Older Vivo cells such as B-S7 use the short hyphen style and suit other phones.
If the lettering is worn, B and 8, or 6 and 5, can look alike. Angle the BA61 label under bright light, or photograph it and zoom in.
Signs the pack is wearing out
| What you notice | Likely reason | What to do |
|---|---|---|
| Percentage drops by a third within an hour | Worn BA61, or a heavy app | Check Y19s health, then test BA61 |
| Y19s shuts down with a sixth to a quarter left | Weak cell cannot give peak current | Plan a replacement |
| Screen lifts or back cover bows | BA61 has swollen | Stop charging, go the same day |
| Body stays hot with the screen off | Worn BA61 or a runaway app | Restart the Y19s, remove its case, then test BA61 |
First rule out apps and poor reception with the Y19s drain checks on our guide. Then use the health check steps to decide whether the cell is really the problem.
A BA61 that bulges, scorches, seeps or shows a dent is dangerous. Stop charging, leave the Y19s cell untouched and move the phone away from any heat source. Take the phone to a service centre. Fake replacements often print a capacity far above 5500 mAh, so accept a pack only when the full code matches.
Fitting a new BA61 pack the safe way
The Y19s has a sealed body, so only a trained hand should open it. The Vivo service centre or a well-reviewed repair shop can do it, and either will match the new cell against the old label.
Before the pack goes in, look at it closely:
- A sound replacement BA61 weighs close to the Y19s's original pack. A much lighter one hints at a smaller cell with a false label.
- Its print should be crisp with batch codes. Smudged text is a warning.
- A claim much higher than 5500 mAh from a cell of this body size is not believable.
More fitting advice for any phone sits on the replacement page.
Looking after a 5500 mAh pack day to day
Heat does more harm than long use. When charging the Y19s, avoid beds, parked cars and full sun, and take off a chunky cover if it heats up. Use the Y19s's boxed charger or a reputable one rated no higher.
An owner brought a Y-series phone saying it died at 20 percent. The technician opened the back, read the code, and found a worn cell with the correct label. The Y19s still failed after a restart and full charge, so the shop fitted a new BA61.
Avoid leaving the Y19s parked at full charge night after night. A cell that lives cool and partly charged lasts longer.
Frequently asked questions
Which phone uses the BA61 battery model name?
Most listings match BA61 to the Vivo Y19s at 5500 mAh typical. A single listing names the Vivo Y04, so read the label on that phone before buying.
Is BA61 a Samsung battery?
No. Samsung codes usually start with EB-, while BA61 is given for a Vivo phone. The letters BA are only a coincidence.
How many mAh is the BA61 battery?
It is listed at 5500 mAh typical and 3.89 V. The BA61 label may print a slightly lower rated minimum, so check yours.
Is vivo BA61 the same as B-S7?
No. B-S7 is a separate short code with its own phone list. Do not treat the two as interchangeable even when the capacity looks close.
Will a 6000 mAh pack labelled BA61 fit the Y19s?
Be careful. In the same body, a capacity far above the original is usually a false label. Choose the exact code and a capacity near 5500 mAh.
Where is the BA61 code written?
It is on the cell label under the back panel. The Y19s is sealed, so leave the opening to a technician.