{"product_id":"philips-fc8800-replacement-battery-144v-800mah-ni-mh","title":"Philips FC8800 Replacement Battery 14.4V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips FC8800 Series — 14.4V Ni-MH Replacement Battery (NR49AA800P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 800mAh Ni-MH replacement battery for the Philips FC8800 cordless handheld vacuum. It fits the FC8800, FC8801, and FC8802 models. Order this when the original cell no longer holds enough charge to complete a cleaning pass.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFC8800, FC8801, FC8802 compatibility:\u003c\/strong\u003e\n    All three models run the same 14.4V power rail and share the NR49AA800P cell format with the same connector and BMS handshake — one battery covers the entire range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the FC8800 charger circuit and confirmed the BMS handshake completes correctly. The thermal cutoff triggered at expected thresholds under sustained motor load, with no false trips during normal suction cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging on the FC8800:\u003c\/strong\u003e\n    Do not leave the vacuum sitting on the charging dock permanently. Ni-MH cells in this pack develop capacity fade significantly faster under continuous trickle charge. Charge to full and remove the unit from the dock.\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\"\u003eThe FC8800 motor draws harder when the filter is partially blocked, pulling more current than the cell's rated output. The BMS reads this as a voltage sag and reduces power to the motor before the charge indicator registers low. The vacuum feels like it's losing suction, but the battery still has remaining capacity. Clean or replace the filter first — if suction recovers, the battery is not the issue.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cutting out mid-clean and then recovering on its own\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked filter, clogged nozzle, or hair wrap at the intake — the motor strains and current spikes past the BMS threshold. The BMS cuts output, the motor stops, and the pack resets once current drops. Clear the blockage and test again. If the trip still occurs on an unobstructed intake with a fresh filter, check cell voltage under load — it should hold above 12V during normal operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428064755802,"sku":"BWCS-PHC880VX-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428064788570,"sku":"BWCS-PHC880VX-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428064821338,"sku":"BWCS-PHC880VX-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHC880VX-1.webp?v=1779934037","url":"https:\/\/batteryweb.com\/products\/philips-fc8800-replacement-battery-144v-800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}