{"product_id":"bagotte-bl509-replacement-battery-144v-3000mah-li-ion","title":"Bagotte BL509 Replacement Battery 14.4V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBagotte BL509 — 14.4V Li-ion Replacement Battery (BONA18650-MF1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V 3000mAh Li-ion battery pack for the Bagotte BL509 cordless stick vacuum. It replaces OEM part BONA18650-MF1. The pack restores full power to the motor and suction system when the original cell has degraded or failed to hold charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBL509 platform fit:\u003c\/strong\u003e\n    The BL509 runs a 14.4V motor rail with a specific connector and BMS handshake. This pack matches that voltage rail, connector housing, and communication protocol — the charger and vacuum electronics recognise it as they would the original cell.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on a BL509 unit under both hard-floor and carpet load. The BMS held stable under sustained suction draw and tripped correctly when we induced a blockage — no unexpected shutdowns on normal operation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging habit for the BL509:\u003c\/strong\u003e\n    Do not leave the BL509 sitting on the charging dock continuously. Trickle current during permanent dock contact accelerates capacity fade in this pack chemistry. Charge to full and remove the vacuum from the dock between uses.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCordless vacuum losing suction before the battery indicator reaches low\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eOn the BL509, suction can drop noticeably while the battery indicator still shows two or three bars. This happens because a partially blocked filter forces the motor to draw above its rated current, causing the battery's internal resistance to produce voltage sag under load. The indicator reads resting voltage, not load voltage — so it still looks healthy. Clear the filter first, then retest; if suction recovers immediately, the battery was not the fault.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cutting out mid-clean and recovering after a few seconds\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When suction airflow is restricted — blocked nozzle, saturated filter, or hair wrap on the brush roll — the motor works harder and draws a current spike above what the BMS allows. The BMS disconnects the pack to protect the cells, then resets once the load drops. Check the filter and nozzle for blockage before assuming the battery is at fault. A clean, unobstructed airpath should keep draw below the trip threshold.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428007903322,"sku":"BWCS-CNS129VX-1","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428007936090,"sku":"BWCS-CNS129VX-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428007968858,"sku":"BWCS-CNS129VX-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CNS129VX-1.webp?v=1779933824","url":"https:\/\/batteryweb.com\/products\/bagotte-bl509-replacement-battery-144v-3000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}