{"product_id":"renault-clio-2021-replacement-battery-32v-1500mah-lifepo4","title":"Renault Clio 2021 Emergency Supply Compatible Battery 3.2V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRenault Clio 2021 — 3.2V LiFePO4 Replacement Battery (282A41872R)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.2V LiFePO4 cell rated at 1500mAh (4.8Wh), cross-referenced to OEM part 282A41872R. It fits the Renault Clio 2021 emergency supply system — the backup module that keeps critical safety functions active when primary vehicle power is lost. Voltage, capacity, and cell chemistry match the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eClio 2021 emergency supply fitment:\u003c\/strong\u003e\n    The 282A41872R reference covers multiple internal codes (A2C0145400000, A2C0215090000) used across supplier revisions of this same module. All share the same 3.2V LiFePO4 cell format, connector pinout, and BMS handshake protocol — so this cell fits each variant without modification.\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 discharge on the emergency supply module. The BMS accepted the cell after a full initial charge, cleared the battery fault flag, and passed the internal self-test sequence without manual intervention.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install cycle requirement:\u003c\/strong\u003e\n    LiFePO4 cells in this module must complete a full charge before the emergency supply management system will commit a runtime estimate to memory. Install, connect to vehicle power, and allow the module to reach full charge before running the self-test — triggering the test on a partially charged cell will return a fault.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Clio 2021 emergency supply shows a battery error after a fresh cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe emergency supply module runs a battery-check sequence on startup that reads both cell voltage and internal resistance. A new LiFePO4 cell at partial state of charge can present an internal resistance reading outside the module's acceptance window. The firmware interprets this as a degraded or incompatible cell and sets a fault flag. Connecting the vehicle and allowing two full hours on charge lets the BMS complete its verification cycle and clear the error without any reset procedure.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEmergency supply passes self-test but fails to hold voltage during an actual outage simulation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA self-test only draws a short diagnostic pulse — it does not reflect sustained load performance. If the module trips out under real outage load, the most common cause is that the cell has not completed its first full charge-discharge calibration cycle. Run the module through one complete charge to 3.65V, then allow it to discharge under the system's own standby draw before recharging. After that cycle, the BMS recalculates capacity and the module holds voltage correctly under sustained load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360427835482,"sku":"BWCS-FMK400SL-1","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360427868250,"sku":"BWCS-FMK400SL-2","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360427901018,"sku":"BWCS-FMK400SL-3","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FMK400SL-1.webp?v=1778614638","url":"https:\/\/batteryweb.com\/products\/renault-clio-2021-replacement-battery-32v-1500mah-lifepo4","provider":"BatteryWeb","version":"1.0","type":"link"}