{"product_id":"seat-born-2022-replacement-battery-74v-3400mah-li-ion","title":"SEAT Born 2022 Emergency Supply Replacement Battery 7.4V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSEAT Born 2022 \/ Formentor KM \/ Leon KL — 7.4V Li-ion Replacement Battery (3G0915089)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V 3400mAh Li-ion replacement for the emergency supply battery fitted across several SEAT and Volkswagen Group models. It directly replaces OEM part 3G0915089 and cross-references EAC63298904, EAC63298909, and EC-VW-OCU3. The battery powers onboard emergency equipment — including emergency lighting and warning systems — when the main vehicle supply is unavailable.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fitment — Born, Formentor KM, Ibiza KJ, Leon KL:\u003c\/strong\u003e\n    These models share a common emergency supply module with the same connector pinout, voltage rail, and BMS handshake protocol. One battery covers all of them.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge-discharge cycle on the emergency supply module. The BMS accepted the battery after one complete cycle and cleared the low-battery flag without manual reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install charge cycle — do not skip it:\u003c\/strong\u003e\n    The emergency supply management system in these vehicles will not trust a new battery's runtime estimate until it completes one full charge cycle from near-empty. Install the battery, then allow a full charge before relying on the unit in an emergency situation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the emergency supply unit shows a battery error after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe emergency supply module runs a firmware-level battery-check sequence when it detects a new or recently disconnected battery. This sequence checks cell voltage, internal resistance, and BMS communication before clearing the error flag. If the battery voltage is slightly below the module's acceptance threshold — common after shipping — the unit will show an error and refuse to arm. Place the unit on charge for at least two hours after installing the new battery. The error flag clears automatically once the module completes its validation cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSelf-test failure on the emergency module after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA self-test failure directly after installation almost always means the battery management system has not yet completed its calibration cycle. The module's self-test checks stored capacity data — data that only exists after one full charge-discharge cycle has been logged. Running the self-test immediately after fitting a new battery gives the module no baseline to validate against. Charge the battery fully, allow the module to discharge it through normal standby draw, then run the self-test again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43303977123930,"sku":"BWCS-ESP915XL-1","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43303977156698,"sku":"BWCS-ESP915XL-2","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43303977189466,"sku":"BWCS-ESP915XL-3","price":78.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ESP915XL_1.webp?v=1777520716","url":"https:\/\/batteryweb.com\/products\/seat-born-2022-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}