VDO Dayton MS2010AUS GPS Compatible Battery 3.7V 1800mAh

VDO Dayton MS2010AUS — 3.7V Li-ion Replacement Battery (ICP1034501S1PSPM)

This is a 3.7V, 1800mAh Li-ion cell for the VDO Dayton MS2010AUS portable GPS navigator. It replaces the original ICP1034501S1PSPM battery when the unit no longer holds enough charge for a full navigation session. Dimensions are 51.63 x 34.19 x 10.44mm — measure your original cell before fitting.

• MS2010AUS platform fit: The MS2010AUS uses a single-cell 3.7V Li-ion configuration with a protection circuit matched to this form factor. Swapping in a cell with a different footprint or nominal voltage will cause BMS rejection or connector stress.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the MS2010AUS platform and confirmed the BMS accepted the cell without fault flags. Charge termination occurred correctly at 4.2V and low-voltage cutoff engaged at the expected threshold.
• Cold-start satellite acquisition after swap: After fitting this cell, power the unit on outdoors with a clear view of the sky. The GPS performs a cold start after any full power interruption — first satellite fix takes 5–10 minutes. Subsequent warm starts drop back under a minute once almanac data is cached.

GPS battery indicator showing full charge but shutting off without warning

The MS2010AUS uses a voltage-threshold method to estimate remaining charge. After a battery swap, the on-screen indicator is uncalibrated against the new cell's discharge curve. The unit can hit its low-voltage cutoff before the indicator has stepped down to one bar — which is why the device appears to shut off from a half-full display. Run two or three full charge-to-cutoff cycles to let the firmware recalibrate the threshold mapping. After that, the indicator will step down more accurately before the 3.0V cutoff is reached.

Saved routes and POIs missing after battery replacement

Some route data and points of interest on the MS2010AUS are held in battery-backed RAM rather than permanent flash storage. When the battery is fully removed, that RAM loses power and the stored data is wiped. Map tiles and firmware survive because they live on the internal flash, but custom routes and saved favourites may not. Before swapping the cell, export any critical routes via the USB connection to a PC so you can restore them after the new battery is fitted.