Prestigio GeoVision 5850HDDVR GPS Compatible Battery 3.7V 1100mAh

Prestigio GeoVision 5850HDDVR — 3.7V Li-Polymer Replacement Battery (PL613450 1S1P)

This 3.7V, 1100mAh Li-Polymer cell replaces the original PL613450 1S1P battery in the Prestigio GeoVision 5850HDDVR portable GPS navigator. It restores standalone navigation and location tracking on this vehicle-mount unit. Capacity is 1100mAh (4.07Wh) — matching the original cell's specification.

• GeoVision 5850HDDVR fitment: This cell matches the voltage rail, physical footprint (50.86 × 34.00 × 5.73 mm), and connector orientation of the 5850HDDVR. The BMS handshake on this unit is straightforward — no proprietary authentication challenge between cell and device.
• Bench tested on actual hardware: We cycled this cell through charge and load discharge on the GPS platform. The BMS held cutoff cleanly at the low-voltage threshold and accepted a full charge cycle without thermal flags.
• First-fix cold start after fitting: After fitting this cell, power the unit on outdoors and let it acquire a satellite fix before driving. A full power interruption triggers a cold start — expect the first satellite lock to take 5–10 minutes. Subsequent warm starts drop back under a minute once almanac data is cached.

GPS accuracy reduced when the 5850HDDVR battery drops below 20%

At low state of charge, some GPS receivers step down receiver sensitivity to reduce current draw and extend remaining power. On the 5850HDDVR, this shows up as position drift or a slower position refresh on-screen. The GPS chip prioritises power headroom over signal processing at voltages approaching the BMS cutoff threshold. Keeping the cell above 3.6V under load holds the receiver in full-sensitivity mode.

5850HDDVR shuts off without warning before the battery indicator hits zero

The on-screen battery indicator on this unit reads estimated state of charge, not a direct voltage measurement. A degraded original cell has a steeper voltage drop curve, so the device hits the BMS cutoff threshold — typically around 3.0V under load — while the indicator still shows one or two bars. Fitting a new cell with a flat discharge curve recalibrates the effective warning window. After the first full charge and discharge cycle on the replacement, the indicator reading and actual remaining capacity align more closely.