Golf Buddy WTX Compatible Battery 3.7V 300mAh AEE582525

Golf Buddy WTX / WTX+ — 3.7V Li-Polymer Replacement Battery (AEE582525)

This 3.7V, 300mAh lithium-polymer cell replaces the original AEE582525 battery inside the Golf Buddy WTX and WTX+ GPS golf smartwatch. It restores full function to the GPS navigation, distance measurement, and scorecard tracking features the watch depends on during a round. Capacity figure is 300mAh (1.11Wh) — exactly as specified for this platform.

• WTX and WTX+ compatibility: Both watches share the same battery bay dimensions (27.00 × 24.60 × 5.00mm), the same AEE582525 part number, and the same 3.7V supply rail to the GPS module and display controller — so one cell covers both models.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the WTX platform. The BMS accepted the new cell without error flags, and the fuel gauge IC re-registered state-of-charge correctly after one complete charge cycle.
• Post-swap charge routine for the WTX fuel gauge: After fitting this cell, place the watch on its charger immediately and run it to 100% before use. The fuel gauge IC on the WTX loses its charge reference when the old cell is removed — it cannot calibrate the new cell's capacity without one full charge from near-zero.

Why GPS use drains the WTX battery faster than display-only mode

The WTX GPS module pulls significantly more current than the display or Bluetooth stack alone. During active course tracking, the chipset acquires satellite fix continuously rather than polling at intervals, which keeps the draw elevated for the entire round. A 300mAh cell at 3.7V gives 1.11Wh of usable energy — that budget is shared between GPS, the display backlight, and BLE sync. Turning off the backlight and disabling auto-sync during a round preserves the cell's charge for the GPS functions that matter most on the course.

Watch not pairing to the Golf Buddy app after battery swap

Removing the battery kills the BLE session entirely — the watch loses its bonding key from active memory. The Golf Buddy app on the phone still holds the old pairing record, which blocks a clean reconnect. Go to the phone's Bluetooth settings, forget the WTX device, then re-initiate pairing from the watch's connection menu. Once paired fresh, the app will re-sync course data and the watch should hold the bond through normal power cycles.