{"product_id":"philips-powerpro-aqua-fc6400-replacement-battery-148v-3400mah-li-ion","title":"Philips PowerPro Aqua FC6400 14.8V Replacement Battery 4ICR19\/65","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips PowerPro Aqua FC6400 Series — 14.8V Li-ion Replacement Battery (4ICR19\/65)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.8V 3400mAh Li-ion battery pack replaces the original 4ICR19\/65 cell in the Philips PowerPro Aqua FC6400 cordless vacuum. It fits the FC6400, FC6400\/01, FC6401\/01, and related variants in the FC6400 series. The pack restores suction power to the wet and dry handheld vacuum after the original cell has degraded.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFC6400 series compatibility:\u003c\/strong\u003e\n    The FC6400 and FC6401 variants share the same 14.8V battery rail, connector pinout, and BMS handshake protocol. One pack covers the full series without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on an FC6400 unit. The BMS negotiated correctly with the Philips charger, accepted a full charge cycle, and released current without tripping overcurrent protection under standard carpet-mode motor load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging behaviour on the FC6400:\u003c\/strong\u003e\n    The FC6400 charging dock does not cut power automatically when the pack reaches full charge. Leaving the vacuum docked continuously forces a trickle charge through the cells. Charge to full, then remove the vacuum from the dock until the next use.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSuction dropping before the battery indicator reaches low\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the motor draws more current than the rated load — typically caused by a partially blocked filter or debris restriction, not actual cell depletion. The BMS reads the elevated current draw as a voltage sag event and begins throttling output to protect the cells. Clean the filter and check the dirt container before assuming the battery is at fault. A healthy cell at this capacity should hold steady voltage above 13.8V under normal motor load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cutting out mid-clean and then recovering after a pause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a failed battery. When suction is restricted — by a clogged filter or blocked nozzle — the motor spins harder and pulls current above the BMS cutoff threshold. The BMS disconnects the circuit, which reads as a sudden power cut. After a short pause, cell voltage recovers and the vacuum starts again. Check and clean the filter first. If the cut-out continues on an unblocked, clean filter, check that the replacement pack's BMS cutoff rating matches the FC6400's motor draw spec before assuming a defective cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43427975954522,"sku":"BWCS-PHC645VX-1","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43427975987290,"sku":"BWCS-PHC645VX-2","price":66.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43427976020058,"sku":"BWCS-PHC645VX-3","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHC645VX-1.webp?v=1779933649","url":"https:\/\/batteryweb.com\/products\/philips-powerpro-aqua-fc6400-replacement-battery-148v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}