RAC 5000 WIDE GPS Replacement Battery 3.7V 750mAh LP053443

RAC 5000 WIDE — 3.7V Li-Polymer Replacement Battery (LP053443 1S1P)

This is a 3.7V 750mAh lithium-polymer cell for the RAC 5000 WIDE portable GPS navigator. It replaces the original LP053443 1S1P battery when the device fails to hold charge or powers off unexpectedly. Dimensions are 46.74 × 34.60 × 5.90mm — confirm these against your existing cell before fitting.

• RAC 5000 WIDE compatibility: This cell matches the voltage rail and physical footprint of the original LP053443 1S1P. The BMS on this unit monitors cell voltage directly — swapping an off-spec cell can trigger premature low-battery warnings or cause the device to refuse to boot.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on GPS navigator hardware. The protection circuit held cutoff at the correct low-voltage threshold and the charge controller accepted a standard 4.2V charge termination without fault flags.
• Cold-start behaviour after fitting: After fitting this cell, power the unit on outdoors and let it acquire a satellite fix before driving. A full power interruption resets the GPS almanac to a cold start — first fix can take 5–10 minutes. Subsequent warm starts resolve in under a minute once the almanac is rebuilt.

GPS accuracy reduced at low battery on the RAC 5000 WIDE

Some GPS units step down receiver sensitivity as cell voltage drops toward the cutoff threshold. On the RAC 5000 WIDE, this can appear as position drift or slower route recalculation before the low-battery indicator even triggers. The receiver draws more current during active satellite tracking than during standby, which accelerates voltage sag on a degraded cell. A fresh 750mAh cell at full charge maintains the voltage headroom the receiver needs to stay at full sensitivity throughout a journey.

Device shuts off without warning before the battery indicator hits zero

This is a calibration issue between the fuel gauge and the actual cell capacity. After fitting a new battery, the on-device charge indicator is still calibrated to the degraded old cell — it can show 20% remaining when the true cell voltage is already at the BMS cutoff threshold of around 3.0V. Run two or three full charge-to-shutdown cycles to let the firmware recalibrate the indicator against the new cell's actual capacity curve. After recalibration, the low-battery warning will trigger with enough headroom to save your route before shutdown.