{"product_id":"ambrogio-40-basic-replacement-battery-252v-6900mah-li-ion","title":"Ambrogio 4.0 Basic Compatible Battery 25.2V 6900mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAmbrogio 4.0 Basic \/ Elite Series — 25.2V Li-ion Replacement Battery (1126-9105-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 25.2V, 6900mAh Li-ion battery pack for the Ambrogio 4.0 robotic lawn mower range. It fits the 4.0 Basic, 4.0 Basic 4WD, 4.0 Elite, 4.0 Elite 4WD, and over 60 additional compatible models. The OEM part number is 1126-9105-01, also referenced as CS C0106\/1.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e4.0 Series platform compatibility:\u003c\/strong\u003e\n    The 4.0 Basic, Basic 4WD, Elite, and Elite 4WD share the same 25.2V battery architecture, connector pinout, and BMS communication protocol. Swapping between these models requires no adapters or firmware changes — the pack clicks in and the mower reads it immediately.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through full charge and discharge cycles on the 4.0 platform. The BMS correctly reported state of charge to the mower's dock station, accepted charge without fault codes, and held voltage above the low-cutoff threshold through the complete discharge window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eSpring recommissioning tip:\u003c\/strong\u003e\n    Before first use of the season, bring the battery indoors overnight if ambient temperature is below 10°C. Cold Li-ion cells have higher internal resistance, and the blade motor's inrush current can trip the BMS protection circuit on a cold pack — even when the pack is fully charged.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS Cutoff During Thick-Grass or Wet-Grass Blade Load\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe blade motor on the 4.0 series draws significantly more current through dense or wet grass than on a dry, maintained lawn. If the momentary current spike exceeds the BMS overcurrent threshold, the pack shuts down mid-cycle as a protection response — not a battery fault. A new replacement pack can show this behaviour more often in its first few uses because the cells haven't yet settled into their operating resistance curve. After 5–8 full cycles, internal resistance drops and the BMS trips less readily under the same blade load. If cutouts persist beyond that, mow in a shorter cutting height setting to reduce motor load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger Shows Fault Light After Mower Sat Unused All Winter\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge slowly in storage. If the pack voltage drops below approximately 20V over a long winter, the charger's acceptance circuit may reject it and show a fault or refuse to start. This is a low-voltage lockout — the charger won't push current into a pack it reads as potentially damaged. Some Ambrogio dock chargers will retry automatically after a 30-minute wait; if not, connect the pack to a compatible Li-ion charger with a \"recovery\" or \"wake\" mode to bring cell voltage above the acceptance threshold (typically 21V), then return to the dock.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381314420826,"sku":"BWCS-ABL100VX-1","price":191.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381314453594,"sku":"BWCS-ABL100VX-2","price":226.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381314486362,"sku":"BWCS-ABL100VX-3","price":253.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ABL100VX-1.webp?v=1778899944","url":"https:\/\/batteryweb.com\/products\/ambrogio-40-basic-replacement-battery-252v-6900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}