Vodafone VF716 Compatible Battery HBU83S 3.7V 700mAh

Vodafone VF716 / VF736 — 3.7V Li-ion Replacement Battery (HBU83S)

This 3.7V Li-ion cell replaces the original battery in the Vodafone VF716 and VF736, along with the 715 and 716 series handsets. Capacity is 700mAh (2.59Wh), matching the OEM spec. It fits the same bay, uses the same connector, and works with the phone's existing charge IC.

• VF716 / VF736 platform fit: These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. One cell covers the full compatible range without modification to the battery contacts or housing.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on a VF716 unit. The BMS accepted the charge IC handshake cleanly, with no charge-interrupt faults logged and voltage holding stable across screen-on and call loads.
• Fuel gauge recalibration on first use: After fitting this battery, disable any fast-charge mode and complete one full discharge-charge cycle at standard rate. This lets the fuel gauge IC build an accurate discharge curve for the new cell before high-current charging pushes current into an uncalibrated coulomb counter.

Sudden shutdown at 20–30% on the VF716 after a cell swap

This happens because the phone's fuel gauge IC is still reading the old cell's discharge curve. A new cell has a steeper voltage cliff under modem and screen load than the worn cell the IC was calibrated against. The phone sees the voltage drop below its shutdown threshold before the displayed percentage catches up. Run one full discharge to 0% and a complete charge to 100% without interruption — this forces the coulomb counter to resync to the new cell's actual curve.

Battery percentage jumping erratically after fitting the replacement cell

The fuel gauge IC on these handsets stores its calibration data against the previous cell's internal resistance and capacity profile. When a new cell goes in, the stored data no longer matches the actual charge state, so percentage readings can jump 10–15% in either direction. This is not a fault with the replacement cell. One complete discharge from 100% down to automatic shutdown, followed by a full uninterrupted charge, resets the calibration and stabilises the readout.