{"product_id":"toshiba-replacement-battery-36v-2700mah-li-mno2","title":"Toshiba ER17500V PLC Replacement Battery 3.6V 2700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eToshiba ER17500V — 3.6V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V lithium manganese dioxide cell rated at 2700mAh (9.72Wh), cross-referencing Toshiba part number ER17500V. It supplies backup power for SRAM memory retention and real-time clock functions in PLC and industrial controller hardware. When the original cell drops below retention threshold, the controller loses program memory and clock data — this cell replaces it.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePLC memory retention use:\u003c\/strong\u003e\n    PLCs rely on a constant low-current supply from this cell to hold SRAM contents and RTC data when mains power is removed. The ER17500V format is widely specified for this role because its flat discharge curve keeps voltage above the SRAM retention threshold across the full cell life.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We confirmed open-circuit voltage, checked cell dimensions against the ER17500V datasheet, and verified the cell holds steady voltage under the micro-amp draw typical of PLC backup circuits.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure — mandatory:\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 de-energised will erase SRAM contents immediately. If that happens, a full program reload from the programming device is required before the controller can run.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePLC losing program memory after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSRAM in most PLCs has no capacitor buffer — the moment the backup cell is disconnected and the controller is off, retention voltage collapses and memory clears. This is not a battery fault. It is a procedure fault. The fix is always the same: reload the last saved program from the programming terminal, set the RTC manually, and confirm all retentive data blocks are restored before returning the machine to service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery alarm not clearing after a confirmed good cell is installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eMost controllers latch the low-battery alarm in firmware — it does not clear automatically when a new cell is fitted. The PLC continues to flag the fault until a technician manually resets it through the programming software or operator panel. On many Mitsubishi and Omron units this is a dedicated reset command in the diagnostic menu. Clear the alarm, confirm the status LED changes, then verify cell voltage is reading above 3.5V in the system diagnostics before closing the panel.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415979163738,"sku":"BWCS-PLC276SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415979196506,"sku":"BWCS-PLC276SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415979229274,"sku":"BWCS-PLC276SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLC276SL-1.webp?v=1779758818","url":"https:\/\/batteryweb.com\/products\/toshiba-replacement-battery-36v-2700mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}