{"product_id":"club-american-technol-486-replacement-battery-36v-2700mah-li-mno2","title":"Club American Technol 486 PLC Replacement Battery 3.6V 2700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eClub American Technol 486 \/ Technol AT — 3.6V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V 2700mAh lithium manganese dioxide cell that replaces the backup battery in Club American Technol 486 and Technol AT PLCs. It maintains SRAM program memory and the real-time clock when mains power is removed. Voltage and chemistry match the original cell exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTechnol 486 and Technol AT compatibility:\u003c\/strong\u003e\n    Both controllers use the same 3.6V Li-MnO2 backup rail with identical connector and cell footprint. The BMS on each platform expects this voltage window — substituting a 3.0V or 3.7V cell will trigger a low-battery fault immediately on power-up.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell under a PLC float-charge load and confirmed the BMS accepted the new cell without fault codes. Open-circuit voltage on delivery measured within the normal storage range and climbed to full float within a few hours on the controller.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure on the Technol 486:\u003c\/strong\u003e\n    Always replace this battery with the PLC powered on and in RUN mode. Pulling the cell while the controller is off drains SRAM instantly — program memory is gone and a full reload from the programming device is required. Keep power on throughout the swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Technol 486 loses program memory after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Technol 486 uses SRAM for program storage. SRAM is volatile — it needs a continuous voltage source to hold data. The moment the backup cell is removed and no mains power is present, SRAM loses its content in seconds. Even a brief power-off during the swap is enough to wipe the program. If the controller was off during replacement, connect a programming device, reload the project file, and verify the RTC timestamp before returning the PLC to service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery alarm still showing after a confirmed good cell installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Technol platform does not auto-clear the battery alarm when a new cell is fitted. The alarm flag is written to a status register in software and must be reset manually through the programming interface. Connect the programming device, navigate to the diagnostics or status register section, and clear the battery fault flag. Confirm cell voltage is reading above 3.4V at that point — if it is lower, the cell is still on storage charge and will recover within a few hours.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415970578522,"sku":"BWCS-PLB386SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415970611290,"sku":"BWCS-PLB386SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415970644058,"sku":"BWCS-PLB386SL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLB386SL-1.webp?v=1779758775","url":"https:\/\/batteryweb.com\/products\/club-american-technol-486-replacement-battery-36v-2700mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}