{"product_id":"callaway-upro-replacement-battery-37v-750mah-li-ion","title":"Callaway uPro GPS Replacement Battery 3.7V 750mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCallaway uPro \/ uPro Go — 3.7V Li-ion Replacement Battery (30200 \/ GPS305CA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 750mAh Li-ion cell replaces the original battery in the Callaway uPro and uPro Go handheld golf GPS navigators. It matches the OEM voltage, capacity, and 53.9 × 33.8 × 4.60mm footprint. Fits the existing connector and battery bay without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003euPro and uPro Go compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, connector pinout, and 3.7V supply rail. One cell covers both — no BMS handshake difference between the two variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the uPro platform. The BMS accepted charge without fault flags, and the protection circuit tripped correctly at the low-voltage cutoff threshold before cell damage could occur.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst outdoor power-on after fitting:\u003c\/strong\u003e\n    After installing this cell, power the uPro fully on outside and let it acquire a satellite fix before heading to the first tee. The device performs a cold start after any full power interruption — first fix can take 5–10 minutes outdoors, compared to under a minute for subsequent warm starts.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGPS accuracy drops at low battery on the uPro\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen cell voltage falls below roughly 3.5V, the uPro's receiver reduces sensitivity to stay within power budget. This shows up as wider distance readings or slower green-line updates — not a GPS signal problem, but a power-management response. The fix is a fresh or fully charged cell before a round. A battery that no longer holds charge above 3.5V under load should be replaced, not recharged.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003euPro shuts off without low-battery warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe on-screen battery indicator in the uPro is calibrated against the original cell's discharge curve. An aged or new-but-different-capacity cell can cause the indicator to misread state-of-charge, meaning the device hits the voltage cutoff while the icon still shows bars remaining. This is a calibration drift issue, not a fault with the replacement cell. After fitting this battery, run two or three full charge-to-cutoff cycles to let the indicator recalibrate against the new cell's actual discharge curve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377682579546,"sku":"BWCS-SUP01SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377682612314,"sku":"BWCS-SUP01SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377682645082,"sku":"BWCS-SUP01SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SUP01SL_1.webp?v=1778771881","url":"https:\/\/batteryweb.com\/products\/callaway-upro-replacement-battery-37v-750mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}