The BA27 battery model name appears in two kinds of sources. One parts dealer prints 4900 mAh with 3.91 V, roughly 19.2 Wh, against BA27 and tags it for the vivo V40 Lite, a Y100i 5G edition and the V2279A. A product article ties BA27 to the V40 Lite and V40 SE 5G with a 5500 mAh battery and 44 W charging.
Those figures cannot both be right for one pack. The likeliest explanation is that BA27 covers more than one variant, or one source made an error. Your own cell label is the only way to be sure.
Quick facts
What sources say about the BA27 battery model name
| Source type | Phones | Capacity |
|---|---|---|
| Parts seller | V40 Lite, Y100i 5G variant, V2279A | 4900 mAh at 3.91 V |
| Product article | V40 Lite, V40 SE 5G | 5500 mAh, 44 W |
Neither is a vivo document. We list the V40 Lite because both sources name it.
Why a code can carry two capacities
Makers sometimes keep a battery code while changing the cell supplier or the rated figure between batches. A seller who measured one batch may list 4900 mAh rated, while launch material quotes a larger typical figure for a later version. It is also common for product articles to copy the phone's advertised capacity onto the battery code without checking the cell. Either way, the printed rated value on the pack in your phone is what to match.
vivo's newer BA codes
Recent vivo phones carry BA plus two digits: BA10, BA28, BA33, BA45 and BA27 among them. Each is a different pack. Searches for "vivo ba27 battery model name" are usually from owners who found the code on a cell and want the phone.
Confirming BA27 in your phone
Read the phone name and V-number under About phone. If it is a V40 Lite or V40 SE, BA27 is a likely match. The cell label then shows the code, 3.91 V and the rated capacity; that rated figure tells you which of the two descriptions applies to your phone.
Do not buy a BA27 by capacity alone. A 4900 mAh pack and a 5500 mAh pack may have different outlines; the wrong one can press on the screen or not connect. Match the full label.
Where these phones are sold
The V40 Lite and V40 SE were sold mainly outside India, so Indian service centres may not stock BA27. If you bought one abroad, contact vivo service with the V-number; they can often order the part. The vivo code index lists packs for phones sold here.
Battery care on recent vivo phones
vivo's battery menu offers a smart charging option and an app usage list. For a recent phone, a drain problem is more often an app or setting than a worn cell. Our drain checklist covers the usual causes.
BA27 battery model name and imported phones
If you bought a V40 Lite or V40 SE abroad, keep its box and invoice. vivo service in India may need them to order an overseas part. Until then, avoid replacing a recent phone's battery with an unbranded pack; most battery complaints on new phones are fixed by software updates or by closing an app that keeps the phone awake.
Frequently asked questions
Which phone uses the vivo BA27 battery?
Sources name the vivo V40 Lite, with one adding a Y100i 5G variant and the V40 SE 5G.
What is the BA27 battery capacity?
Sources disagree: one lists 4900 mAh rated at 3.91 V, another 5500 mAh. Read your own label.
Is BA27 sold in India?
The phones linked to it were sold mainly outside India, so stock here may be limited.
Can BA28 replace BA27?
No. BA28 is listed for the vivo T3 and is a different pack.
Where do I find the V-number on a vivo phone?
Open Settings, then About phone. The V-number identifies the exact model for ordering parts.
Is BA27 the same as B-A2?
No. vivo's older three character codes like B-A2 are different packs from the newer BA27.