{"product_id":"panasonic-fp-x-series-controllers-replacement-battery-3v-550mah-lithium","title":"Panasonic AFPX-BATT Replacement Battery 3V 550mAh Lithium","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic FP-X Series Controllers — 3V Lithium Replacement Battery (AFPX-BATT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3V, 550mAh lithium cell replaces the backup battery in Panasonic FP-X series programmable logic controllers, GT32, GT32M, and GT32T displays. It holds SRAM program data and keeps the real-time clock running when main power is cut. Without a functioning cell, the controller loses its program and clock the moment mains power drops.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFP-X series and GT32 display compatibility:\u003c\/strong\u003e\n    These units share the same 3V CR2450-format cell, the same SRAM retention circuit, and the same battery socket — so one part number covers the full range. Voltage tolerance across all these boards is tight: below 2.5V the SRAM retention rail collapses and memory is gone.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on an FP-X controller and confirmed the BMS accepted the new cell without a fault trip. Float charge settled within the expected range and the battery alarm cleared after a manual reset in the programming software.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure for FP-X controllers:\u003c\/strong\u003e\n    Always replace this cell with the PLC powered on and in RUN mode. Removing the old cell while the controller is off drains SRAM instantly — the program is gone and a full reload from the programming device will be required before the machine runs again.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePLC battery alarm not clearing after a confirmed good installation\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eOn FP-X controllers, the battery alarm flag is set in software and does not clear automatically when a new cell is fitted. The controller detects the voltage has recovered, but the alarm latch stays set until you clear it manually. Open FP-X Configurator or FPWIN Pro, navigate to the system register settings, and reset the battery alarm flag. If the flag is not cleared, the controller will continue reporting a battery fault even with a fully charged cell in the socket.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew cell reading lower than 3V immediately after fitting\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLithium backup cells are shipped at storage voltage — typically 2.7V to 2.85V — to reduce capacity loss in transit. This is normal. Once seated in the controller, the PLC's float charge circuit brings the cell up to its rated 3V within a few hours of the controller being powered. Do not pull and return the cell based on an initial low reading. Check voltage again after four hours on a powered controller — it should read at or above 2.95V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415976345690,"sku":"BWCS-PLC320SL-1","price":20.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415976378458,"sku":"BWCS-PLC320SL-2","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415976411226,"sku":"BWCS-PLC320SL-3","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLC320SL-1.webp?v=1779758818","url":"https:\/\/batteryweb.com\/products\/panasonic-fp-x-series-controllers-replacement-battery-3v-550mah-lithium","provider":"BatteryWeb","version":"1.0","type":"link"}