{"product_id":"langren-i80-replacement-battery-74v-7200mah-li-polymer","title":"Langren I80 Diagnostic Scanner Replacement Battery 7.4V 7200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLangren I80 — 7.4V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V 7200mAh Li-Polymer battery for the Langren I80 automotive diagnostic scanner. It replaces the original cell when capacity has degraded or the unit no longer holds charge through a full diagnostic session. Voltage and physical dimensions match the I80 bay: 125.10 × 64.80 × 14.00mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eI80 platform fit:\u003c\/strong\u003e\n    The I80 uses a flat Li-Polymer pack with a specific connector and BMS handshake that gates boot. This replacement carries the correct protection circuit to satisfy that handshake — the scanner's firmware checks cell voltage at startup before allowing the OS to load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on the I80 platform. The BMS responded correctly to charge termination at 8.4V and triggered low-voltage cutoff within spec. No fault codes were thrown on the scanner's power management screen.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eData export before swap:\u003c\/strong\u003e\n    Export all saved vehicle profiles and fault log history before removing the original battery. On most portable diagnostic scanners in this class, vehicle profile data is held in RAM backed by the main battery — pulling the pack clears it.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the I80 won't boot after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe I80 checks cell voltage before it will load the operating system. A freshly shipped Li-Polymer pack typically arrives at storage voltage — around 3.7V per cell — which sits below the scanner's boot threshold. If the unit shows nothing on screen after a swap, it hasn't failed: it's waiting for the battery to reach a minimum charge level. Plug in the supplied charger and leave it connected for at least 30 minutes before attempting to power on.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWireless connection dropping mid-diagnostic session\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe I80's Bluetooth or Wi-Fi link draws a burst of current when it re-transmits data packets — particularly during live data streaming from a vehicle ECU. When battery voltage sags under that draw, the wireless radio browns out before the scanner's battery indicator shows low. This is more common with a degraded original pack but can appear briefly with a new cell at low state of charge. Charge the replacement to full before running a wireless session, and confirm resting voltage is at or above 7.8V before starting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360132595802,"sku":"BWCS-XTP800SL-1","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360132628570,"sku":"BWCS-XTP800SL-2","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360132661338,"sku":"BWCS-XTP800SL-3","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-XTP800SL-1.webp?v=1778610920","url":"https:\/\/batteryweb.com\/products\/langren-i80-replacement-battery-74v-7200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}