Bushnell Yardage Pro XGC Replacement Battery 3.7V 1500mAh

Bushnell Yardage Pro XGC — 3.7V Li-Polymer Replacement Battery (H603759-1S1P)

This 3.7V, 1500mAh lithium-polymer cell replaces the original battery in the Bushnell Yardage Pro XGC, Yardage Pro XGC Plus, and 368350 handheld golf GPS rangefinder. It matches the OEM voltage and capacity exactly, fitting the same physical envelope at 62.30 × 36.60 × 5.90mm. Swap it in when the original no longer holds a charge through a full round.

• Yardage Pro XGC and XGC Plus compatibility: Both models run the same GPS receiver board, connector pinout, and BMS voltage thresholds — a single cell revision covers the full range. The XGC Plus adds course-map storage but draws from the same 3.7V rail, so no separate variant is needed.
• Bench tested on actual hardware: We cycled this cell through charge, full GPS acquisition, and sustained active-navigation load on the Yardage Pro platform. The BMS held charge cutoff cleanly at 4.2V and low-voltage protection triggered before the display showed a false full-charge reading.
• Cold-start satellite acquisition after fitting: After fitting this cell, power the unit on outdoors before your round and let it acquire a full satellite fix. A cold start following complete power removal takes 5–10 minutes for first fix — step outside and hold still near the first tee before tee-off, not mid-round.

GPS accuracy dropping at low battery on the Yardage Pro XGC

When cell voltage falls below approximately 3.5V, some GPS units — including the Yardage Pro platform — reduce receiver sensitivity to protect the remaining charge. The GPS module pulls less current, which weakens signal processing and can push distance readings 2–5 yards off. This isn't a firmware bug; it's a deliberate hardware trade-off. Fitting a fresh cell at full 3.7V nominal restores full receiver sensitivity immediately.

Yardage Pro XGC shutting off without low-battery warning

After a battery swap, the unit's voltage-threshold indicator needs one full charge-discharge cycle to calibrate correctly against the new cell. Until that cycle completes, the displayed charge level can read 30–40% while the actual cell voltage is already near the 3.2V cutoff. The BMS then trips protection and the unit shuts off without the usual warning flashes. Run one complete charge to 4.2V and allow the device to discharge normally through a round — after that cycle the indicator tracks correctly.