{"product_id":"ambrogio-40-basic-4wd-premium-replacement-battery-259v-7800mah-li-ion","title":"Ambrogio 4.0 Basic 25.9V Robotic Mower Replacement Battery 7800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAmbrogio 4.0 Basic 4WD Premium — 25.9V Li-ion Replacement Battery (101-806)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 25.9V, 7800mAh lithium-ion battery pack for the Ambrogio 4.0 Basic 4WD Premium robotic lawn mower and several related models. It also fits the 4.0 Elite 4WD Premium, 4.36 Elite 4WD Ultra Premium, and the L200 series. Voltage and cell count match the original pack exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fit — 4.0 and 4.36 series:\u003c\/strong\u003e\n    These models share the same 25.9V battery architecture, connector pinout, and BMS handshake protocol. Swapping between them does not require any configuration change on the mower.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on a 25.9V robotic mower platform. The BMS responded correctly to both trickle charge initiation and high-current blade motor inrush without tripping or locking out.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCold-weather start tip:\u003c\/strong\u003e\n    Before the first mow of the season, bring the battery indoors overnight if temperatures are below 10°C. Cold Li-ion cells carry higher internal resistance, and the blade motor inrush current on startup can trip the BMS before the pack has had a chance to warm up.\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 thick-grass or wet-grass blade load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Ambrogio 4WD blade motor draws significantly more current when cutting dense or wet grass compared to normal dry conditions. If that inrush spike exceeds the BMS protection threshold — typically triggered when cell voltage sags below 21V under load — the pack will cut power to protect the cells. This is not a battery fault; it is the protection circuit doing its job. Reduce the mowing zone complexity or allow the mower to tackle heavy growth in shorter passes to keep current draw within the BMS window.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger refuses to accept the pack after winter storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the mower sat unused through winter, the pack may have self-discharged below the charger's acceptance voltage — usually around 20V for a 25.9V Li-ion pack. Most Ambrogio chargers include a recovery or wake-up mode that applies a low trickle current to bring the cells back above acceptance threshold. Connect the battery to the charger and leave it for 30–60 minutes before expecting the charge LED to switch from fault to active. If the cells have dropped below approximately 17.5V, the BMS may have locked the pack entirely and a dedicated Li-ion recovery charger set to 25.9V nominal will be needed to reinitialise it.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381280145498,"sku":"BWCS-ABL500VX-1","price":148.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43381280178266,"sku":"BWCS-ABL500VX-2","price":176.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43381280211034,"sku":"BWCS-ABL500VX-3","price":196.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ABL500VX-1.webp?v=1778899901","url":"https:\/\/batteryweb.com\/products\/ambrogio-40-basic-4wd-premium-replacement-battery-259v-7800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}