{"product_id":"golfbuddy-voice-x-replacement-battery-37v-400mah-li-polymer","title":"GolfBuddy Voice X Replacement Battery 3.7V 400mAh DR652525","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGolfBuddy Voice X — 3.7V Li-Polymer Replacement Battery (DR652525)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe DR652525 is a 3.7V 400mAh Li-Polymer cell for the GolfBuddy Voice X GPS golf watch. It fits the Voice X and 2ALG4 VoiceX variants. Swap this cell when the original no longer holds a charge through a full round.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVoice X and 2ALG4 VoiceX compatibility:\u003c\/strong\u003e\n    Both models run the same 3.7V power rail and share the DR652525 footprint — 26 × 25 × 6mm. The BMS connector pinout and cell dimensions are identical across these two variants, so one cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and GPS-active discharge on the Voice X platform. The BMS accepted the new cell cleanly, with no handshake errors or low-voltage cutoff trips during the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap fuel gauge reset:\u003c\/strong\u003e\n    After fitting this cell, place the watch on its charger immediately and run a full charge to 100% before first use. The fuel gauge IC on the Voice X cannot set its reference point without a complete charge cycle from near-zero following a cell swap — skipping this step causes the percentage readout to behave erratically.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Voice X GPS lock pulls harder on a new cell than the old one did\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA degraded Li-Polymer cell develops higher internal impedance over time. The GPS module draws a spike of current during satellite acquisition, and an aged cell sags under that load — so the watch throttles GPS update frequency to compensate. A fresh DR652525 has lower impedance, so the GPS module runs at full acquisition current without triggering the BMS undervoltage threshold. During the first week after a swap, the fuel gauge may read slightly inconsistently while it learns the new cell's discharge curve — this normalises after three to five full charge cycles.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWatch showing 0% and refusing to power on after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a fuel gauge IC problem, not a faulty cell. The MAX or similar coulomb-counter IC on the Voice X loses its stored reference the moment the old cell is disconnected. With no reference, it reads the new cell's resting voltage as 0% and the watch protection circuit refuses to boot. Connect the watch to its charger immediately after reassembly — the charger line forces the IC to reinitialise and accept the cell. Charge to 100% before attempting to power on; once the gauge completes that first full cycle, the readout stabilises at the correct state of charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416160174170,"sku":"BWCS-GFX200SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416160206938,"sku":"BWCS-GFX200SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416160239706,"sku":"BWCS-GFX200SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GFX200SL-1.webp?v=1779760505","url":"https:\/\/batteryweb.com\/products\/golfbuddy-voice-x-replacement-battery-37v-400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}