Navman Pin GPS Compatible Battery 3.7V 1250mAh Li-ion

Navman Pin / Praktiker LooxMedia 6500 — 3.7V Li-ion Replacement Battery (541380530006)

This 3.7V, 1250mAh Li-ion cell replaces the original battery in Navman Pin and Praktiker LooxMedia 6500 portable GPS navigators. It matches the OEM voltage rail and physical dimensions (50.00 × 36.60 × 6.60mm) needed for a direct swap. Cross-references include BL-LP1230/11-D00001U, BP-LP1200/11-D0001 MX, and G025M-AB.

• Pin and LooxMedia 6500 compatibility: Both units share the same battery bay dimensions, 3.7V single-cell architecture, and connector pinout — which is why one cell covers both platforms without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the GPS platform and confirmed the protection circuit trips correctly at the low-voltage cutoff threshold, preventing cell damage during extended navigation use.
• Post-swap initialisation tip: After fitting this cell, power the GPS on outdoors and let it run until it acquires a satellite fix. The unit performs a cold start after any full power interruption — first fix can take 5–10 minutes outside; subsequent warm starts are under a minute.

GPS accuracy dropping as battery charge falls

Some Navman Pin units reduce GPS receiver sensitivity at low battery to conserve power. This shows up as longer position update intervals, wider accuracy circles on screen, or the unit struggling to maintain lock in areas with marginal signal. It is a firmware-level power management decision, not a hardware fault. Keeping the battery charged above 3.5V under load prevents the device from entering this reduced-sensitivity mode.

Device shuts off with no low-battery warning

After a battery swap, the on-screen fuel gauge is uncalibrated — the navigator has no learned discharge curve for the new cell. The unit can cut power at the hard voltage threshold before the warning indicator fires. This usually self-corrects after two or three full charge and discharge cycles as the device recalibrates its voltage-to-percentage mapping. Run the battery down until shut-off, then charge fully, and repeat until the warning appears reliably before power loss.