{"product_id":"wurth-master-108-replacement-battery-108v-1500mah-li-ion","title":"Würth Master 10.8V 1500mAh Li-ion Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWurth Master 10.8 — 10.8V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 1500mAh Li-ion replacement battery for the Wurth Master 10.8 cordless drill\/driver. It fits the compact slide-mount battery bay on the Master 10.8 platform. Voltage and capacity match the original specification: 10.8V, 1500mAh (16.2Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaster 10.8 platform fit:\u003c\/strong\u003e\n    The Master 10.8 uses a dedicated 10.8V slide-pack format with a specific contact rail layout and BMS handshake. This battery matches that voltage rail and connector geometry — the tool's electronics communicate with the pack through the same data line protocol as the original.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the pack through charge\/discharge cycles on a Master 10.8 platform, monitoring BMS response to trigger-pull inrush current. The overcurrent protection threshold held correctly across repeated motor-start events without nuisance trips.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMotor inrush conditioning on first use:\u003c\/strong\u003e\n    On initial use, run the drill at half load — light driving or low-torque drilling — for the first two cycles before applying full torque. This lets the BMS profile the motor's inrush current draw and set its overcurrent thresholds accurately before maximum-demand tasks.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on Master 10.8 motor-start inrush surge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen you pull the trigger hard on a stalled or high-resistance fastener, the motor draws a sharp inrush spike — often two to three times the running current. A new pack's BMS starts with conservative overcurrent thresholds and can interpret that spike as a fault, cutting power instantly. This is not a defective battery; it is the protection circuit doing its job before it has learned the motor's demand profile. Two to three half-load break-in cycles recalibrate the threshold and eliminate nuisance cutoffs.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTool bogs under load but doesn't cut out completely\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eBogging under load — where the drill slows noticeably but keeps running — usually points to voltage sag rather than a BMS trip. High contact resistance at the battery rail causes a voltage drop under current draw, reducing power to the motor. Clean the battery terminals and the tool's contact rails with isopropyl alcohol and a firm brush. If the rail voltage under load reads below 9.5V on a multimeter, the contact surfaces need physical cleaning or light abrasion to restore conductivity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416038015066,"sku":"BWCS-DML820PW-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416038047834,"sku":"BWCS-DML820PW-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416038080602,"sku":"BWCS-DML820PW-3","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DML820PW-1.webp?v=1779759665","url":"https:\/\/batteryweb.com\/products\/wurth-master-108-replacement-battery-108v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}