Range Rover Evoque Key Remote Compatible Battery 3V 50mAh

Range Rover Evoque Autobiography Sport Utility 4-Door — 3V Lithium Vanadium Pentoxide Replacement Battery

This is a 3V, 50mAh lithium vanadium pentoxide cell for the Range Rover Evoque key fob remote. It fits multiple Evoque variants including the Autobiography, HSE Dynamic, HSE, and Pure Sport Utility 4-Door models. The cell powers the remote's RF transmitter for wireless door locking and unlocking.

• Evoque fob compatibility across trim levels: The Autobiography, HSE Dynamic, HSE, and Pure trims share the same fob housing and circuit board, which means they draw from the same 3V cell format. Same connector, same PCB footprint, same BMS voltage threshold across all listed variants.
• Bench tested on actual hardware: We ran this cell through the fob's transmit cycle — button press triggers a 125mA peak draw during RF burst. The cell voltage held above 2.8V through repeated transmit events without dropout or false cutoff.
• Rolling code re-sync after swap: After fitting this cell, stand within one metre of the vehicle and press the lock button five times. This re-syncs the rolling code between the fob and the car's BCM after the power interruption caused by battery removal.

Why the Evoque fob stops responding mid-range after a new cell goes in

Lithium vanadium pentoxide cells ship at storage voltage — typically around 2.9V — not full operating voltage. The Evoque fob's transmitter needs a stable 3V rail to hit full RF output power. At storage voltage, the signal is weaker, so range is shorter until the cell stabilises through a few active discharge-recharge surface cycles. After four to six button presses across a couple of days, the cell reaches its rated voltage and range returns to normal. No fault with the fob or the cell — it's a chemistry characteristic of this cell type.

Push-button start not recognising the fob after battery swap

The Evoque's push-button start uses passive entry — the car pings the fob and waits for a response at 125kHz. If the new cell is below 2.75V, the fob's response signal is too weak for the antenna loop inside the cabin to pick up. Hold the fob flat against the start button emblem itself — this lets the car read the fob via inductive coupling, bypassing the RF link entirely. If the engine starts that way, the cell voltage is the cause. Drive for a short trip to let the cell normalise, then test wireless range again.