{"product_id":"holux-gr-230-gps-receiver-replacement-battery-37v-900mah-li-ion","title":"Holux GR-230 GPS Replacement Battery 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHolux GR-230 \/ GR-231 GPS Receiver — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 900mAh Li-ion cell built to fit the Holux GR-230 and GR-231 portable GPS receivers. Both models share the same battery bay dimensions and voltage rail, so one cell covers either unit. Capacity matches the original spec at 900mAh (3.33Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGR-230 and GR-231 compatibility:\u003c\/strong\u003e\n    Both receivers use the same 52.90 × 32.50 × 7.50mm cell with an identical 3.7V nominal rail and matching connector orientation. The BMS in each unit reads the same charge profile, so no handshake issues occur on first boot.\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 GR-230 platform. The onboard BMS accepted the charge curve without fault flags, and the protection circuit tripped correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst fix after a battery swap:\u003c\/strong\u003e\n    After fitting a fresh cell, power the unit on outdoors in clear sky view and let it run a full cold start. The GR-230 has no cached almanac data after a full power removal, so the first satellite fix takes 5–10 minutes. Subsequent warm starts drop back under a minute once the almanac rebuilds.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGPS accuracy dropping as the GR-230 battery runs low\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAt low charge states, the GR-230 reduces RF receiver sensitivity to keep the processor running longer. This shows up as fewer satellites tracked and wider position scatter on the map. The receiver may still display a fix, but the HDOP value climbs and reported accuracy degrades. Keep the cell above the low-battery indicator to hold full receiver sensitivity — once the icon appears, recharge before relying on the position readout for navigation decisions.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGR-230 shutting off without a low-battery warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge on the GR-230 calibrates against the original cell's discharge curve. A new cell — or an aged one with shifted internal resistance — can hit the hardware voltage cutoff before the on-screen indicator reaches the last bar. The result is an abrupt shutdown with no visible warning. Run two or three full charge-discharge cycles after fitting this replacement to let the gauge re-calibrate. After recalibration, the warning should appear at approximately 3.55V, giving you enough time to save position data before shutdown.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377711415386,"sku":"BWCS-GR230SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377711448154,"sku":"BWCS-GR230SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377711480922,"sku":"BWCS-GR230SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GR230SL-1.webp?v=1778771839","url":"https:\/\/batteryweb.com\/products\/holux-gr-230-gps-receiver-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}