VDO Dayton PN2050 GPS Replacement Battery 3.7V 1400mAh

VDO Dayton PN2050 / PN1000 / MA3060 — 3.7V Li-ion Replacement Battery (HYB8030450L1401S1MPX)

This 3.7V, 1400mAh lithium-ion cell replaces the original battery in the VDO Dayton PN2050, PN1000, and MA3060 portable GPS navigators. It matches the OEM part number HYB8030450L1401S1MPX and fits the same physical envelope at 52.55 × 34.31 × 8.04mm. Capacity is 1400mAh (5.18Wh), sourced to the original specification.

• PN2050, PN1000, and MA3060 compatibility: All three models share the same battery bay dimensions, connector pinout, and 3.7V single-cell Li-ion architecture. No modification is needed — the cell slots directly into any of the three units with the same BMS handshake behaviour.
• Bench tested on actual hardware: We ran this cell on a PN2050 unit. The BMS accepted the charge cycle without fault flags, held the voltage curve through active GPS navigation, and triggered the low-battery warning at the correct threshold before cutoff.
• Cold-start preparation after fitting: After installing this cell, power the unit on outdoors with a clear sky view and let it complete a full satellite acquisition before driving. A GPS unit that has had full power removed performs a cold start — first fix can take 5–10 minutes. Subsequent starts after that session will lock in under a minute.

Saved routes and POIs disappearing after battery swap

The PN2050 and its siblings store some navigation data — including recent destinations and certain POI lists — in battery-backed volatile RAM. When the battery is fully removed, that RAM loses power and the data is wiped. This is not a fault with the replacement cell; it is a consequence of complete power interruption. Before pulling the old battery, export any saved routes to the device's internal flash or an SD card via the navigation software. Restore them after the new cell is fitted and the unit has booted cleanly.

Unit shuts off without a low-battery warning

After a battery replacement, the fuel gauge IC on the PN2050 is not calibrated to the new cell — it still references the discharge curve of the degraded original. The on-screen battery indicator may show two bars when the actual cell voltage has already dropped to the hardware cutoff threshold, around 3.2V. The device then cuts power with no visible warning because the indicator never reached the programmed low-battery alert level. Run two full charge-and-discharge cycles in active navigation mode to let the gauge recalibrate against the new cell's actual discharge curve.