About this replacement
Vivo V23e / S10e Series — 3.89V Li-Polymer Replacement Battery (B-R5)
The B-R5 is a 3950mAh Li-Polymer cell rated at 3.89V (15.37Wh). It fits the Vivo V23e, V2116, S10e, and S10e 5G. This battery restores power to the display, processor, and cellular radios when the original cell has degraded or failed entirely.
- V23e / S10e platform fit: These models share the same battery bay geometry, connector pinout, and BMS handshake protocol. The B-R5 part number spans all listed variants because the voltage rail and physical footprint — 83.30 × 61.45 × 4.40mm — are identical across them.
- Bench tested on actual hardware: We ran the B-R5 through charge and load cycles on the V23e mainboard. The BMS accepted the cell without fault codes, and the charge IC engaged at full current within the first cycle.
- First-cycle fast charge caution: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its discharge curve against the new cell before the charge IC pushes high current into an uncalibrated state.
Why the V23e reports wrong battery percentage after a cell swap
The fuel gauge IC on the V23e uses a coulomb counter calibrated to the original cell's discharge curve. After swapping to a new B-R5 cell, the stored curve no longer matches actual cell behaviour. The phone reads estimated state-of-charge against stale data, which produces inflated or deflated percentage readings. Run one full discharge to around 5% and a complete charge to 100% without interruption — the fuel gauge IC updates its reference curve during that cycle.
Sudden shutdown at 20–30% remaining on the replacement cell
This happens when the fuel gauge IC hasn't completed recalibration and the cell voltage drops sharply under modem or screen load — a voltage cliff the old curve didn't predict. The phone's low-voltage protection trips before the displayed percentage reaches zero. It is not a faulty cell. Complete two full discharge-charge cycles without fast charging; once the coulomb counter locks onto the new cell's curve, the shutdown threshold tracks accurately down to approximately 3.3V per cell.