{"product_id":"omron-c20h-replacement-battery-3v-1350mah-li-mno2","title":"Omron C200H-BAT09 PLC Backup Battery 3V 1350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOmron C20H \/ C60H Series — 3V Li-MnO2 Replacement Battery (C200H-BAT09)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V lithium manganese dioxide cell rated at 1350mAh, replacing the C200H-BAT09 in Omron C20H, C28H, C40H, C60H, and 31 additional compatible controllers. It backs up SRAM and the real-time clock during mains power loss. Without a live cell, both program memory and clock data are gone the moment AC drops.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC200H-series PLC compatibility:\u003c\/strong\u003e\n    These controllers share the same battery bay, connector, and 3V retention rail. The BMS handshake on C200H-series hardware expects a Li-MnO2 cell at this voltage — substituting a different chemistry can trigger false low-battery alarms or fail to satisfy the retention threshold entirely.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a C200H chassis in RUN mode and confirmed the BMS accepted the cell without a battery-fault flag. SRAM retention voltage held above the 2.5V cutoff threshold throughout the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure for C200H controllers:\u003c\/strong\u003e\n    Always replace this battery with the PLC powered on and in RUN mode. Removing the cell while the controller is powered off erases SRAM instantly — there is no hold-up capacitor. If the swap was done cold, a full program reload from your programming device is required before the controller can return to service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the C200H loses program memory after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe C200H uses static RAM with no internal hold-up capacitor. The battery is the only thing keeping that memory alive the moment mains power drops. Pull the cell while the PLC is off — even for ten seconds — and the SRAM loses its charge rail entirely. The program, I\/O configuration, and any stored data values are wiped. Recovery requires reconnecting a programming device, reloading the project file, and verifying all data table values before putting the controller back into RUN mode.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery alarm not clearing after installing a confirmed good cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn C200H-series controllers, a low-battery alarm flag does not auto-clear when a new cell is fitted. The flag is latched in the system status area and must be reset manually through your programming software — typically by writing 0 to the relevant system flag word in the SR area. Cycling power alone will not clear it. Check the C200H operation manual for the exact flag address, then force-reset it from the programming device before expecting the alarm to drop off.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415975329882,"sku":"BWCS-OPC280SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415975362650,"sku":"BWCS-OPC280SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415975395418,"sku":"BWCS-OPC280SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OPC280SL-1.webp?v=1779758775","url":"https:\/\/batteryweb.com\/products\/omron-c20h-replacement-battery-3v-1350mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}