{"product_id":"hht-micrologix-1500-replacement-battery-3v-1000mah-li-mno2","title":"HHT MicroLogix 1500 Replacement Battery 3V 1000mAh Li-MnO2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHHT MicroLogix 1500 \/ SLC-5 Series — 3V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3V lithium-manganese dioxide cell replaces the backup battery in Allen-Bradley MicroLogix 1500 and SLC-5 series PLCs. It fits the MicroLogix 1500, SLC-5\/01, SLC5\/02, SLC5\/03, and seven additional compatible models. Capacity is 1000mAh (3Wh) — matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMicroLogix 1500 and SLC-5 platform fit:\u003c\/strong\u003e\n    These controllers share the same backup battery footprint, voltage rail, and SRAM retention circuit. One cell covers the full platform without any wiring or connector modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a MicroLogix 1500 under float charge and confirmed BMS acceptance, stable 3V output, and RTC retention across a simulated power-loss cycle. No fault codes were triggered on reinstatement.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap protocol for this controller:\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 will clear SRAM — program data is gone and a full reload from your programming device is required. This is not a general caution; it is specific to the MicroLogix 1500 memory architecture.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSRAM retention voltage threshold on the MicroLogix 1500\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MicroLogix 1500 SRAM retention circuit monitors battery voltage continuously. When the cell drops below approximately 2.5V, the controller can no longer guarantee data integrity and will log a battery fault. A fresh Li-MnO2 cell holds a flat discharge curve near 3V for most of its capacity, then drops sharply — meaning the controller often shows no warning until the cell is nearly exhausted. Scheduled replacement on a fixed maintenance interval is more reliable than waiting for a fault alarm to appear.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery alarm not clearing after the new cell is installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe low-battery fault flag in the MicroLogix 1500 does not reset automatically when a new cell is fitted. The alarm is latched in the controller's status file and must be manually cleared through RSLogix 500 or your connected programming software — find it in the controller status word and reset the bit directly. If you replaced the cell while the PLC was powered off, check program memory before clearing the alarm; SRAM loss and a latched battery fault can occur together. Clear the fault, verify your ladder logic is intact, and confirm the RTC is showing the correct time.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415982178394,"sku":"BWCS-PLC769SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415982211162,"sku":"BWCS-PLC769SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415982243930,"sku":"BWCS-PLC769SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLC769SL-1.webp?v=1779758956","url":"https:\/\/batteryweb.com\/products\/hht-micrologix-1500-replacement-battery-3v-1000mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}