The Vivo Y33s battery model name is B-S2 according to most listings, and the pack is 5000 mAh typical for the Y33s with model number V2109. Replacement listings for this phone mostly give that one code and that one capacity. Many people type it as BS2 or B52, but the correct written form has a hyphen and a letter S in the middle.
A code in a listing is one thing, and the right pack in your hand is another. The B-S2 sticker sits on the cell, readable once the Y33s back is lifted. Below you will find where else to look, codes confused with B-S2, and what to request at the counter. The full code page is B-S2 battery model name.
Quick facts
Step by step
Confirm the phone is a Y33s with V2109
Open Settings, tap About phone and read the name and model number. If you cannot find it, type model in the Settings search bar. The retail box carries the same details.
Ask for the sticker to be read, not guessed
The Y33s is sealed, so the technician opens the back. The sticker should show
B-S2with a capacity and voltage line. Ask to see it yourself.Compare the new pack with the old one
Place both side by side. The code, the size of the cell and the shape of the connector should match. A near-match code is not enough.
Judge the print and weight
Good print is sharp and has batch details. A pack that feels clearly lighter than the old one, yet claims more mAh, should be refused.
Vivo Y33s battery model name in one table
For the Y33s, listings point to a single code. The letters after B- are not a pattern you can decode, so do not work out a code from the phone name. Use the list, then check it against your own phone.
| Y33s detail | Detail | Status |
|---|---|---|
| Phone | Vivo Y33s | Sold in India as a 4G phone |
| Model number | V2109 | Given by replacement listings |
| Battery code | B-S2 | Most listings agree; check the B-S2 label to confirm |
| Capacity | 5000 mAh | Typical figure, as in the phone's specification |
Only the Y33s is placed in the fits list on this page. Other Vivo Y phones may look alike on the outside, but a similar body does not prove a shared battery. For the family view, see the Vivo battery model list.
Where to see the Y33s battery code
Of three places to look on the Y33s, only the cell shows B-S2.
- On the cell sticker. This is the only place where B-S2 is printed on the battery. It is visible only when the back panel is open, and a sealed phone should be opened by a technician.
- Y33s box and Settings. These show the phone name and V2109, not B-S2. Use them to prove that you have a Y33s and not a different Y model.
- On a repair slip. A good shop writes the code on the job card. Keep it for the next time.
Do not search for a secret dialler code that prints the battery model. Such codes differ by brand and software, and none is confirmed here for this phone.
Capacity of the Vivo Y33s battery, rated and typical
Y33s specifications quote B-S2 at 5000 mAh typical, while the label may show a lower rated minimum. No rated B-S2 figure is confirmed, so read your own Y33s cell.
B-S2 holds mAh times volts, over a thousand, in watt hours. At 3.87 V, B-S2 would come to roughly 19.4 Wh. Use the voltage on your own B-S2 sticker rather than borrowing another pack's.
mAh alone does not decide Y33s battery life. Brightness, signal, open apps and the phone's age all change the hours. Y33s charge time depends on its 18 W charger and cable, not only on B-S2.
Look-alike codes and phones near the Y33s
At a repair counter, trouble starts with codes that differ by one character. The second character in B-S2 is a letter S, and in poor print it looks like the number 5. Ask the technician to read B-S2 slowly, character by character.
- B-S1 and B-S7 look similar to B-S2, but each has its own phones and capacity. Do not swap them in.
- The Vivo Y21 page and the Vivo Y20 page cover phones that people often mix with the Y33s because the names are close.
- Two vivo phones with equal screen size and mAh may still take different cells, so a matching box figure proves nothing about the code.
One customer brought a Y series phone and said it was a Y33s, though the box was lost. The back showed a different model number, so the pack ordered for a Y33s would not have fitted. Reading the model number first saved a return trip.
Signs that the Y33s battery is weak
| Y33s symptom | Likely reason | Next step |
|---|---|---|
| Y33s percentage drops quickly after charging to full | Cell has lost capacity with age | Check Y33s health, then plan a B-S2 |
| Y33s powers off with charge remaining | B-S2 voltage sags on heavy use | vivo service can test B-S2 under load |
| Y33s back lifts or screen edge rises | B-S2 has swollen | Unplug the Y33s and visit today |
| Phone stays warm when idle | A heavy app, a poor cable or a tired B-S2 | Restart, change the cable, then test |
Before blaming the pack, read why a phone loses charge fast, then follow the health check steps.
Bulging, heat, leaks or dents make B-S2 dangerous. Unplug the Y33s, keep it unflexed and unpierced, and let it cool. Cheap B-S2 copies often overstate capacity, so once you have confirmed the code, accept only a pack carrying B-S2 exactly.
Replacing the Y33s battery
The Y33s has a sealed back, so do not try to pry it open at home. Leave the Y33s to vivo service or a well reviewed repair shop. Give the technician the Y33s name and V2109, and ask for B-S2 to be compared with the old sticker before fitting.
When a new B-S2 is shown to you, check these points:
- Its code matches the old sticker (B-S2 in most listings), not a near miss.
- The print is clean and the batch details are present.
- The weight feels close to the old pack, and the claimed capacity is near 5000 mAh.
- The connector shape matches the one on the old pack.
Our fitting guide has more advice for any phone.
Looking after a 5000 mAh pack
Heat does more harm than a few extra charge cycles. Never leave the Y33s in a parked car, under a pillow or on a sunny dashboard. If a thick cover makes the phone hot during a game or a long video call, take it off.
Use the Y33s's boxed charger and cable or one rated no higher. Replace any cable that runs hot at the plug. Sitting at full charge for many hours also wears a cell, so unplug when convenient. These habits keep the pack useful for longer and delay the day you need a new one.
Frequently asked questions
Which battery code does the vivo Y33s use?
Most listings give B-S2 for the Y33s, model V2109, at 5000 mAh typical. Read the B-S2 sticker in your own phone.
Is BS2 the same as B-S2?
People type it without the hyphen, but the printed form is B-S2. The second character is a letter S, not the number 5.
How many mAh is the Y33s battery?
The phone is listed with a 5000 mAh battery, which is the typical figure. The B-S2 label may show a marginally lower rated minimum.
Will a B-S1 or B-S7 fit the Y33s?
Do not assume so. B-S1 and B-S7 serve other phones and their plugs may differ. Ask for the code on your old sticker and nothing else.
Where is the battery code printed on the Y33s?
B-S2 is printed on the cell inside the Y33s. The Y33s box and About phone screen show V2109, not B-S2.
Should I replace the Y33s battery myself?
The Y33s back is sealed, so an authorised centre or reliable technician is safer. Levering the Y33s open can puncture B-S2.