{"product_id":"autel-ds808-replacement-battery-37v-4250mah-li-polymer","title":"Autel DS808 Replacement Battery 3.7V 4250mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAutel DS808 \/ IM508 \/ MK808K-BT Series — 3.7V Li-Polymer Replacement Battery (MLP5070111)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 4250mAh lithium-polymer cell replaces the original MLP5070111 battery in Autel handheld diagnostic scanners. It fits the DS808, DS808K, IM508, MaxiCOM MK808K-BT, and 19 additional models in the same platform family. Dimensions are 103.50 × 69.50 × 4.00mm — match these against the cell you pull before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDS808 \/ IM508 \/ MK808K-BT platform fit:\u003c\/strong\u003e\n    These models share the same PCB layout, connector pinout, and BMS handshake protocol. The MLP5070111 part number spans all of them because Autel standardised the power rail across this scanner generation.\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 DS808 platform. The BMS accepted the charge curve without error flags, and the scanner completed a full OBD vehicle scan without voltage sag triggering a shutdown.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eData export before swap:\u003c\/strong\u003e\n    Export all saved vehicle profiles and diagnostic logs before removing the old battery. On Autel scanners in this series, vehicle data can be stored in RAM segments kept alive by the main battery — pulling the cell without exporting first risks losing that data permanently.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the DS808 won't boot after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed cell ships at storage charge — typically 30–50% state of charge. The DS808 boot sequence draws a short high-current pulse that a partially depleted cell can fail to sustain, causing the device to cut out immediately or not respond to the power button at all. This is a voltage threshold issue, not a fault with the battery or the scanner. Charge the replacement cell to full via the wall adapter before attempting to power on — the scanner's BMS will begin accepting charge even with the device off.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWireless link dropping mid-diagnostic session\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DS808 uses a shared power rail for both the display and the wireless module. As the battery ages and internal resistance rises, voltage sag under combined screen-plus-wireless load can push the rail below the threshold the wireless module needs to stay connected. This appears as a dropped VCI link or Bluetooth disconnect — often while the battery indicator still shows 20–30%. Replacing the cell resolves the sag. After fitting the new battery, run a full charge cycle before your first live vehicle session to let the BMS calibrate the state-of-charge reading accurately.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360134660186,"sku":"BWCS-AMS905SL-1","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360134692954,"sku":"BWCS-AMS905SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360134725722,"sku":"BWCS-AMS905SL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AMS905SL-1.webp?v=1778610901","url":"https:\/\/batteryweb.com\/products\/autel-ds808-replacement-battery-37v-4250mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}