{"product_id":"lintronics-tl5242p-replacement-battery-36v-2700mah-li-mno2","title":"Lintronics TL5242P PLC Backup Compatible Battery 3.6V 2700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLintronics TL5242P \/ TL5242W — 3.6V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V, 2700mAh Li-MnO2 cell replaces the backup battery in the Lintronics TL5242P and TL5242W programmable logic controllers. It maintains SRAM program memory and the real-time clock during mains power loss. Dimensions are 60.55 × 18.50 × 18.35mm — verify against the original cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTL5242P and TL5242W compatibility:\u003c\/strong\u003e\n    Both models use the same 3.6V Li-MnO2 cell on the same memory-retention rail with the same connector footprint. One cell covers both variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the PLC's float charge circuit and confirmed stable SRAM retention voltage. The BMS held the cell at the correct backup threshold without triggering a low-battery alarm on a freshly installed unit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure for this controller:\u003c\/strong\u003e\n    Always replace this battery with the TL5242P or TL5242W powered on and in RUN mode. Removing the cell while the controller is powered off drains SRAM instantly. If the PLC was off during the swap, a full program reload from your programming device is required before restart.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePLC battery alarm not clearing after a confirmed good installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the TL5242 series, the battery alarm flag is latched in firmware — it does not reset automatically when a new cell is seated. The controller checks battery status at power-up and logs the alarm, but clearing it requires a manual reset through the programming software. Connect your programming device, navigate to the diagnostics or status register for battery state, and acknowledge the fault. The alarm clears immediately once confirmed.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew cell reading below 3.6V on the PLC status screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-MnO2 cells ship at a reduced storage voltage — typically 3.3V to 3.45V — to slow self-discharge during transit. Once seated, the TL5242's float charge circuit brings the cell up to rated voltage within a few hours. If the status screen still shows low voltage after 4–6 hours of powered operation, reseat the cell and confirm the connector is fully engaged. A confirmed good connection with the PLC powered on will read 3.6V or above.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415970480218,"sku":"BWCS-PLB386SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415970512986,"sku":"BWCS-PLB386SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415970545754,"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\/lintronics-tl5242p-replacement-battery-36v-2700mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}