{"product_id":"radio-beacon-sar-9-replacement-battery-72v-14000mah-li-socl2","title":"Radio Beacon SAR-9 Replacement Battery 7.2V 14000mAh 2ER34615M","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRadio Beacon SAR-9 \/ NBB-441 — 7.2V Li-SOCl2 Replacement Battery (2ER34615M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 14000mAh Li-SOCl2 replacement battery for the Radio Beacon SAR-9 EPIRB and compatible marine distress beacons including the NBB-441, JQX-30A, and FT501. It matches OEM part numbers 2ER34615M and A3-06-2613. Li-SOCl2 chemistry is mandatory for EPIRBs — it maintains voltage stability across a wide temperature range and holds charge through years of standby without significant self-discharge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSAR-9, NBB-441, JQX-30A, FT501 compatibility:\u003c\/strong\u003e\n    These models share the same battery form factor, terminal configuration, and 7.2V voltage requirement. The SAR-9 and its related units accept the 2ER34615M cell because it fits the physical housing and meets the activation current draw the transmitter circuit requires during a 406 MHz distress burst.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We confirmed terminal polarity, physical fit, and open-circuit voltage against the 2ER34615M specification. Li-SOCl2 cells at rest read slightly above nominal — a reading at or below 6.8V indicates a depleted cell and the unit will likely fail self-test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eRe-registration after battery replacement:\u003c\/strong\u003e\n    After fitting a new battery, re-register your beacon with your national maritime authority. Many EPIRB registrations are tied to a service record and some jurisdictions require renewed registration following any maintenance. Check your vessel's EPIRB logbook for the next required inspection date.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SAR-9 fails self-test even with a recently replaced battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SAR-9's internal self-test draws a short high-current pulse to simulate transmitter activation. Li-SOCl2 cells that have been stored incorrectly — particularly above 30°C for extended periods — can develop elevated internal resistance without showing obvious voltage drop at rest. The cell reads 7.2V open-circuit but collapses under load during the test pulse. If the unit fails self-test immediately after battery installation, check the storage history of the replacement cell and verify the open-circuit voltage is above 7.0V before fitting.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSAR-9 self-test LED showing fault code after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fault LED pattern after a battery swap usually means one of three things: the battery contacts are not fully seated, the waterproof gasket shifted during reassembly and triggered a housing integrity fault, or the cell voltage is below the activation threshold. Remove the battery, clean the contact pins with a dry cloth, reseat the cell firmly, and recheck the gasket alignment before closing the housing. If the fault code persists with a confirmed good cell, consult the SAR-9 manual's LED diagnostic table — each flash pattern maps to a specific fault, not a general failure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381325037658,"sku":"BWCS-SAR900FM-1","price":66.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381325070426,"sku":"BWCS-SAR900FM-2","price":78.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381325103194,"sku":"BWCS-SAR900FM-3","price":87.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SAR900FM-1.webp?v=1778900030","url":"https:\/\/batteryweb.com\/products\/radio-beacon-sar-9-replacement-battery-72v-14000mah-li-socl2","provider":"BatteryWeb","version":"1.0","type":"link"}