Navigon 20 Easy GPS Replacement Battery 3.7V 700mAh

Navigon 20 Easy / 20 Plus — 3.7V Li-Polymer Replacement Battery (LIN3740011038020033)

This 3.7V 700mAh Li-Polymer cell replaces the original battery in the Navigon 20 Easy and 20 Plus portable GPS navigators. It matches the OEM part number LIN3740011038020033 and the physical dimensions of 47.53 × 29.45 × 5.17mm. Fit the cell and the unit powers on without firmware prompts or connector modifications.

• 20 Easy and 20 Plus compatibility: Both models share the same battery bay dimensions, connector pinout, and 3.7V supply rail. One cell covers both units — no wiring or adapter needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Navigon 20 unit. The BMS held the cutoff voltage correctly and the device showed a full charge indicator without error codes at the end of the charge cycle.
• Cold-start satellite acquisition after fitting: After any full power removal, the GPS receiver loses its ephemeris cache and must perform a cold start. Take the unit outdoors immediately after first power-on and leave it stationary — the first satellite fix typically takes 5–10 minutes. Subsequent warm starts complete in under a minute once the cache rebuilds.

GPS accuracy reduced at low battery on the Navigon 20

When the 20 Easy drops toward its low-voltage threshold, the device reduces power to the GPS receiver module to extend remaining capacity. Lower receiver sensitivity means weaker satellite signals get dropped, which degrades position accuracy and can cause route recalculations on straight roads. This is a firmware-level power management decision, not a fault with the antenna or unit. Keep charge above the point where the battery indicator shows one bar to maintain full receiver sensitivity.

Navigon 20 shuts off without the low-battery warning appearing first

A degraded original battery holds a surface charge that reads higher than its true state — the voltage-threshold indicator shows two bars, then the cell collapses and the unit cuts off. After fitting a new cell, the fuel gauge recalibrates over one or two full charge cycles. Until it does, the warning may still appear later than expected. Run the unit down to auto-shutoff and charge it fully to 4.2V twice, and the indicator will track the actual cell state accurately.