Product Name: COMPATIBLE Vivo V21 / S9 Battery (B‑P9)
Compatible Models: Vivo V21 (4G/5G), Vivo S9
Type: Internal Rechargeable Lithium‑Ion Battery
Function: Replaces degraded or faulty battery to restore battery life and performance
Installation: Internal repair (requires technician)
Condition: Compatible Replacement Part
Usage: Suitable for Vivo V21 / S9 battery replacement