Most listings match the B-E5 battery model name, often typed as the be5 battery model name, to the vivo Y81 and Y83. The listed capacity is 3260 mAh at 3.82 V, and the maker group is Vivo. Some listings also add the Y81s and the Y83A, but those matches look thinner, so check them on the label.
These are older, slim Vivo phones with a sealed back, so you will not see the battery code without opening the phone. People also write it as BE5 or "be 5", leaving out the hyphen. Printed in full it is B, a hyphen, E and 5. If you are holding a loose battery, the code is on its sticker. If you own one of these phones, have the technician read it before any order is placed.
Quick facts
Step by step
Note down what the phone is called and its model number
Open Settings, tap About phone and note the name and model number. If you cannot find it, type model in the Settings search bar.
Separate Y81, Y81s and Y81i
The names look alike but they are not the same phone. Match your box or the About phone screen letter by letter before you ask for a battery.
Have the old sticker read
After the back is opened by a technician, look for
B-E5printed beside the capacity and voltage. Take a clear picture of it for later.Compare the new pack side by side
The new pack should carry the same code, a capacity near 3260 mAh and the same connector shape. Hold both packs together before anything is fitted.
Judge weight and print
Good print, batch marks and a similar weight are normal. A feather light pack with a large mAh claim is a reason to refuse it.
Phones that use the B-E5 battery
B followed by a hyphen is vivo's pattern for short cell codes. That pattern names vivo and nothing more. For B-E5, several parts listings agree on the Vivo Y81 and the Vivo Y83, and a few of them add the Y81s. Because the Y81, Y81s and Y81i have such similar names, the table below shows how firm each match is.
| vivo handset | Status | Note |
|---|---|---|
| Vivo Y81 | Matched by most listings | 3260 mAh listed |
| Vivo Y83 | Matched by most listings | 3260 mAh listed |
| Vivo Y81s | Named by some listings | Unconfirmed; read the old B-E5 sticker |
| Vivo Y83A | Named once or twice | Not confirmed |
| Vivo Y81i | Not confirmed | A separate phone with its own code |
If your sticker says anything other than B-E5, ignore this table and follow the sticker. The Vivo battery list shows the other Vivo codes in one place.
Searching be5 battery model name: spelling and where the code sits
Most buyers search without the hyphen, so the same code shows up as be5, BE5 or be 5. All of these point to the one battery, B-E5. Do not mix it up with B-O5, since a typed letter O or zero makes the two easy to confuse.
On the pack itself, the code is on the sticker along with the capacity, the voltage and batch details. These phones have a built-in battery under a glued back, so the sticker is hidden. A technician can read it after the back is lifted. On the phone, nothing in the menus shows the battery code, so the only dependable sources are the sticker, the box and the service record. Our guide to reading cell labels works for every brand.
3260 mAh: what the number means
The 3260 mAh figure comes from parts listings for B-E5. Makers often print two numbers, a rated value on the sticker and a slightly higher typical value in adverts, and these listings do not say which one they quote. Read your own sticker, and if it shows a slightly different number, trust the sticker.
B-E5's energy is capacity times voltage, over a thousand. At the listed 3.82 V, B-E5's 3260 mAh is roughly 12.5 Wh. A Y81 cell and another at equal mAh but different voltage hold different energy, so compare more than mAh.
For daily use, remember that a 3260 mAh pack belongs to an older phone with a small screen, and the cell itself has aged. Even a fresh pack will not match what a newer 5000 mAh phone gives. Y81 screen time depends on brightness, signal and apps.
Confirm the code before you order
Ordering by phone name alone is how wrong packs reach the counter. Y81, Y81s and Y81i differ by a single letter, and a pack for one is not automatically right for another. Go by the B-E5 print on the old cell, then check the new one has the same plug and a close capacity.
A customer asked for a "Y81 battery" and was handed a pack with the right size but a different code. With the Y83 open, the technician saw B-E5 on the old cell and a different code on the new one, so it went back. Ten minutes at the counter saved a second visit.
Before the phone is closed up again, keep a clear picture of the old sticker. It helps if the battery needs to be changed again later.
Signs that a B-E5 pack is worn out
| Y81 symptom | Likely reason | What to do |
|---|---|---|
| Charge drops by half in an hour | B-E5 has lost much of its capacity | Test Y81 health, then plan a B-E5 |
| Y83 powers off with charge still showing | A worn B-E5 cannot supply sudden current | Ask vivo service to test B-E5 |
| Back panel lifts or screen edges rise | Swollen battery | Stop using it and go the same day |
| Handset heats up with nothing running | Worn B-E5, charger or a busy app | Restart the Y83, remove its cover, get it checked |
Phones of this age often lose capacity simply from years of charging. On a Y81, check apps and weak signal with our quick drain checklist, then follow the health steps.
If the B-E5 balloons, scorches, weeps fluid or is dented, fire becomes possible. Take the Y81 off charge, keep fingers off the cell, cool it down and bring it to vivo service. Low price B-E5 spares commonly overstate mAh; anything but the exact code goes back.
Codes that look like B-E5
Faint print is a real problem on old labels. The letter E can pass for F, and the number 5 can pass for S, so a quick glance may turn B-E5 into some other code. Compare with B-F3 and B-G7 only to rule them out, since each of those has its own phones and the pack is not interchangeable by size alone.
- Hold the B-E5 label at an angle to a bright lamp, or ask for a zoomed photo.
- Check the phone name too. A Y81 owner who finds a different code on the cell should stop and investigate.
- A match in capacity never proves a match in code. The connector or the shape may still be wrong.
Fitting a B-E5 and caring for it
The Y81 and Y83 have glued backs and B-E5 is held with adhesive. Opening them needs heat, tools and a steady hand, so leave it to vivo service or an independent technician you trust. Pulling at the pack can bend the cell, and that is a fire risk. Read more in the guide to replacing a phone battery.
When a new B-E5 arrives, check the printed code, its weight against the old cell and how sharp the print and batch marks are. After fitting, charge the Y81 with a good charger and cable, keep it out of hot cars and sun, and unplug when full if you can. Warm rooms and nights at 100 percent shorten B-E5's life.
Frequently asked questions
Which phone uses the B-E5 battery?
Most listings match B-E5 to the Vivo Y81 and Vivo Y83. Some add the Y81s, but that is not firm. The listed capacity is 3260 mAh. Read the code on your old cell before buying.
Is the be5 battery the same as B-E5?
Yes. People leave out the hyphen when typing, so be5, BE5 and be 5 all mean B-E5. The printed code on the pack carries the hyphen.
How many mAh is the B-E5 battery?
Listings give 3260 mAh. Sellers do not say whether 3260 mAh is rated or typical, so the B-E5 label decides.
Can I use a Y81i battery in a Y81?
Do not assume so. The Y81i is a distinct handset, and no source here confirms what it takes. Match the B-E5 code and plug on the old cell.
Does the Vivo Y83A also use B-E5?
A few listings say so, but the match is not firm. Have the technician read B-E5 on your cell before you order.
How can I tell whether a B-E5 is counterfeit?
Counterfeit B-E5 cells are usually lighter and blurred, skip batch details and claim far beyond 3260 mAh. Compare weight, print and code with the old pack.