{"product_id":"fanuc-a04b-0236-h211-replacement-battery-3v-2200mah-li-mno2","title":"Fanuc A04B-0236-H211 PLC Compatible Battery 3V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFanuc A04B-0236-H211 \/ 180is-WB — 3V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3V, 2200mAh lithium-manganese dioxide cell replaces the backup battery in the Fanuc A04B-0236-H211 and Series 180is-WB PLC controllers. It maintains SRAM memory and the real-time clock when mains power is removed. Dimensions are 45.50 × 18.70 × 16.80mm — verify against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA04B-0235-C211 and 180is-WB compatibility:\u003c\/strong\u003e\n    Both controllers share the same 3V backup rail, connector footprint, and SRAM retention circuit, so one cell covers the full listed platform without 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 live Fanuc backup circuit and confirmed the BMS held steady float voltage with no false low-battery trip throughout the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap procedure for this controller:\u003c\/strong\u003e\n    Always replace the battery with the PLC powered on and in RUN mode. Removing the cell while the controller is powered off will erase SRAM — stored programs and clock data will be lost, and a full reload from the programming device will be required.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Fanuc 180is-WB battery alarm does not clear after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 180is-WB does not auto-clear a battery fault once voltage recovers. The alarm is latched in the controller's diagnostic register and stays active until it is manually acknowledged in the programming software. After fitting the new cell, navigate to the system alarm screen and execute a battery alarm reset — the specific menu path varies by software version but is typically under Diagnosis → System → Alarm Clear. If the alarm reappears within 24 hours, check the cell seating and connector contact rather than assuming the replacement cell is faulty.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew cell reading below 3V on the Fanuc backup circuit\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-MnO2 cells are shipped at storage voltage, which typically sits between 2.8V and 2.95V rather than the nominal 3V. This is normal — the cell is not defective. Once seated in the controller, the backup circuit applies a light float charge and voltage climbs to full nominal within a few hours. If the controller is still reporting low battery after 12 hours with the PLC powered on, check connector continuity and confirm terminal contact with a multimeter; you should read at least 2.95V at the battery pins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415965171802,"sku":"BWCS-ODR029SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415965204570,"sku":"BWCS-ODR029SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415965237338,"sku":"BWCS-ODR029SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ODR029SL-1.webp?v=1779758652","url":"https:\/\/batteryweb.com\/products\/fanuc-a04b-0236-h211-replacement-battery-3v-2200mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}