{"product_id":"mitsubishi-a-series-plcs-replacement-battery-36v-1700mah-li-socl2","title":"Mitsubishi A6BAT Compatible Battery 3.6V 1700mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMitsubishi A Series PLC — 3.6V Li-SOCl2 Replacement Battery (A6BAT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V 1700mAh lithium thionyl chloride cell that replaces the A6BAT in Mitsubishi A Series PLCs. It maintains SRAM program memory and real-time clock data when main power drops. Compatible models include A Series PLCs, A1FX CPU Robot Control PLC, A1FXCPU Robot Control PLC, A1S, and 28 additional variants in the A Series range.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA Series CPU module compatibility:\u003c\/strong\u003e\n    These CPUs share the same battery bay footprint, connector pinout, and 3.6V SRAM retention rail. The BMS handshake is passive — the cell supplies voltage directly to the memory backup circuit without any protocol exchange.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We verified cell voltage at dispatch and confirmed SRAM retention hold-up across the A1S CPU module. The backup circuit drew steady microamp-level current with no anomalous drain during the test window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure for A Series CPUs:\u003c\/strong\u003e\n    Always replace this cell with the PLC powered on and in RUN mode. Removing the battery while the controller is off clears SRAM instantly — the entire program is lost and must be reloaded from a programming device before the PLC will run again.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the A Series PLC loses program memory during a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A Series CPU uses static RAM for program and parameter storage. SRAM needs continuous voltage to hold its contents — even a two-second gap is enough to wipe everything. Unlike flash-based CPUs, there is no secondary storage layer to recover from. When the battery is pulled with the PLC off, the SRAM supply collapses and the memory clears immediately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery alarm not clearing after confirmed good installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A Series battery low alarm does not reset automatically when a new cell is fitted. The alarm flag is written to a specific status register in the CPU and must be cleared manually using GX Developer or GX Works via the PLC diagnostics menu. A new cell at storage voltage may also read slightly below 3.6V on first install — this rises to rated voltage within a few hours on float charge. Clear the alarm flag after voltage has stabilised, not immediately after swapping the cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415988109402,"sku":"BWCS-MMR967SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415988142170,"sku":"BWCS-MMR967SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415988174938,"sku":"BWCS-MMR967SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MMR967SL-1.webp?v=1779758841","url":"https:\/\/batteryweb.com\/products\/mitsubishi-a-series-plcs-replacement-battery-36v-1700mah-li-socl2","provider":"BatteryWeb","version":"1.0","type":"link"}