{"product_id":"ids-286-replacement-battery-36v-2700mah-li-mno2","title":"IDS 286 PLC Replacement Battery 3.6V 2700mAh Li-MnO2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIDS 286 \/ 386 PLC — 3.6V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V, 2700mAh lithium-manganese dioxide cell replaces the backup battery in IDS 286 and 386 programmable logic controllers. It maintains SRAM program memory and real-time clock data during main power interruptions. Voltage and capacity match OEM spec to keep the controller's memory retention circuit satisfied.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e286 and 386 compatibility:\u003c\/strong\u003e\n    Both models share the same backup power rail, connector footprint, and SRAM retention voltage threshold. One cell covers both platforms without any modification to the battery compartment or wiring.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a 286 controller under float charge and verified the BMS accepted the cell without triggering a battery fault alarm. Open-circuit voltage held within the retention window throughout the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure — mandatory:\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 — program memory is lost and a full reload from the programming device is required.\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 on the 286 and 386 has no capacitor backup — it depends entirely on live battery voltage the moment the old cell is removed. If the swap happens with the PLC powered off, SRAM collapses immediately and the stored program is gone. The controller will boot to a fault or blank state on next power-up. Reconnect your programming device, reload the last saved project, and confirm the RTC is set correctly before returning the unit to service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery alarm not clearing after a confirmed good installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 286 and 386 do not automatically clear the battery alarm once a new cell is fitted. The alarm flag is latched in the controller's status register and requires a manual reset through the programming software. Open the diagnostics or system status screen in your programming environment and clear the battery fault bit directly. If the alarm returns within hours, measure cell voltage at the connector — it should read above 3.5V under no-load conditions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415969595482,"sku":"BWCS-PLB386SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415969628250,"sku":"BWCS-PLB386SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415969661018,"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\/ids-286-replacement-battery-36v-2700mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}