Renkforce GX-111 GPS Compatible Battery 3.7V 1200mAh

Renkforce GX-111 — 3.7V Li-Polymer Replacement Battery (RF-350 6043)

This 3.7V, 1200mAh lithium-polymer cell replaces the original battery in the Renkforce GX-111 GPS navigator. It matches the OEM part number RF-350 6043 and fits directly into the GX-111 housing. Dimensions are 50.90 × 29.80 × 8.00mm — verify clearance before fitting if your unit has been previously serviced.

• GX-111 fit: The GX-111 runs a single-cell Li-Polymer pack at 3.7V nominal. This cell matches that voltage rail, connector orientation, and physical footprint so no modification is needed at the battery bay.
• Bench tested on actual hardware: We cycled this cell under a GPS navigation load profile — screen active, receiver polling, backlight on. The BMS held charge acceptance across full cycles without triggering premature cutoff.
• Cold-start preparation after fitting: After installing this cell, take the GX-111 outdoors and power it on before your first trip. The unit performs a cold start after any full power loss. First satellite acquisition takes 5–10 minutes — subsequent warm starts drop to under a minute once ephemeris data is cached.

GPS accuracy reduced at low battery on the GX-111

When cell voltage drops toward the lower end of the discharge curve, some GPS units — including the GX-111 — reduce RF receiver sensitivity to conserve power. This shows up as position drift, increased HDOP values, or a reduced satellite count in the signal screen. It is not a firmware fault. Keeping the cell above 3.6V during active navigation maintains full receiver performance. If you see accuracy drop during a session, check the battery indicator — it will usually be at or below one bar.

GX-111 shutting off without a low-battery warning

After fitting a new cell, the GX-111's battery gauge may not be calibrated to the replacement cell's discharge curve. The unit reads voltage rather than true state-of-charge, so the visual warning can appear late — or not at all — before the BMS hits its cutoff threshold and shuts the device down. Run two full charge-and-discharge cycles to let the firmware recalibrate its voltage-to-percentage mapping. After that, the low-battery indicator should trigger at approximately 3.5V rather than at abrupt cutoff.