Vivo B-F3 (also listed as BF3) is a rechargeable lithium-ion / lithium-polymer battery designed as the original or compatible replacement for several Vivo Y-series smartphones.
The B-F3 is a slim, internal (non-removable without opening the phone) Li-ion/Li-Po battery that matches the physical size, connector, and electrical characteristics of the original battery in the above models. It is widely sold as both OEM-equivalent and third-party high-quality replacements. It is intended to restore original battery life or replace a degraded original unit.
Compatible Models
(Also commonly listed for related internal codes such as 1814, 1815, 1820, V1818A/T, Y1S, and similar variants.)
These details are compiled from multiple consistent retailer, supplier, and product listing sources for the B-F3 battery.
| Parameter | Value |
|---|---|
| Model | B-F3 (BF3) |
| Type | Lithium-ion / Li-Polymer |
| Nominal Voltage | 3.85 V |
| Charging Limit Voltage | 4.4 V |
| Capacity | 4030 mAh typical (15.51 Wh); some sources list min. ~3935 mAh / 15.14 Wh |
| Energy | ~15.51 Wh |
| Weight | Approximately 80–100 g |
| Chemistry | Li-ion / Li-Po |
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