Product Name: COMPATIBLE Vivo NEX Battery (B‑E6)
Compatible Model: Vivo NEX S (Snapdragon 845) / NEX A
Part Type: Internal Li‑Po battery
Function: Replaces degraded battery; restores runtime and charging efficiency.
Capacity: 3900–4120mAh / 4000mAh (typical)
Voltage: 3.82V – 3.85V
Installation: Internal repair – requires device disassembly