Golf Buddy VTX GPS Rangefinder Replacement Battery SHT503055

Golf Buddy VTX / DSC-VTX-100 — 3.7V Li-Polymer Replacement Battery (SHT503055)

This 3.7V, 900mAh Li-Polymer cell replaces the original SHT503055 battery in the Golf Buddy VTX and DSC-VTX-100 GPS rangefinder. At 56.20 × 30.60 × 5.10mm, it fits the original battery bay without modification. When the stock cell can no longer hold a charge through a full round, this is the direct swap.

• VTX and DSC-VTX-100 compatibility: Both models share the same compact battery bay, connector pinout, and BMS handshake protocol. The SHT503055 part number covers the full range — voltage rail and charge termination logic are identical across units.
• Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on the VTX platform. The BMS responded correctly to charge termination at 4.2V and low-voltage cutoff fired cleanly without false triggers.
• Post-swap GPS initialisation: After fitting this cell, power the VTX fully on outdoors before your round and let it acquire a satellite fix. Full power removal triggers a cold start — first fix can take 5–10 minutes outdoors versus under a minute for a subsequent warm start.

GPS accuracy dropping at low battery on the VTX

At low cell voltage, the VTX reduces power to the GPS receiver to extend remaining use. This lowers receiver sensitivity, which weakens satellite signal acquisition — particularly under tree cover or in valleys. The result is yardage readings that update slowly or show position drift. Keep the cell above 3.6V during active play to maintain full receiver sensitivity.

VTX shutting off without a low-battery warning

The on-screen battery indicator on the VTX is calibrated to the original cell's discharge curve. A worn or replacement cell with a slightly different curve can hit the hardware cutoff voltage before the indicator reaches the warning threshold. The unit cuts off abruptly, with no low-battery alert displayed. After fitting this replacement, run one full charge-to-cutoff cycle outdoors so the indicator recalibrates to the new cell's actual discharge profile.