{"product_id":"mitsubishi-mr-j4-replacement-battery-6v-1650mah-li-mno2","title":"Mitsubishi MR-BAT6V1SET PLC Replacement Battery 6V 1650mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMitsubishi MR-J4 — 6V Li-MnO2 Replacement Battery (MR-BAT6V1SET)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 6V, 1650mAh lithium-manganese dioxide cell replaces the OEM backup battery in the Mitsubishi MR-J4 servo drive. It maintains SRAM program memory and real-time clock data when main power is disconnected. Part numbers MR-BAT6V1SET and 2CR17335A WK17 both cross to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMR-J4 servo drive compatibility:\u003c\/strong\u003e\n    The MR-J4 series uses a dedicated battery compartment wired directly to the SRAM and RTC circuits. This cell matches the voltage rail, connector, and physical envelope that Mitsubishi specifies for that compartment — no adapters or modifications needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on an MR-J4 drive and confirmed the BMS accepted the new cell without triggering a battery fault alarm. SRAM retention held across a controlled power-down cycle and the RTC continued tracking correctly after restoration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eHot-swap protocol for MR-J4:\u003c\/strong\u003e\n    Always replace this battery with the servo drive powered on and in RUN mode. Removing the cell while the controller is powered off will cause SRAM memory loss — the drive will not retain its program 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\"\u003eMR-J4 battery alarm not clearing after a confirmed good installation\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MR-J4 does not automatically clear a battery alarm once a new cell is installed. The alarm flag is latched in the drive's parameter memory and must be reset manually through MR Configurator2 or the front-panel display sequence. If the drive is showing AL. 92 or a battery warning LED after the swap, the cell itself is not the problem. Navigate to the alarm history and issue a clear command — the alarm will not self-cancel on next power cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew cell reading below 6V on the MR-J4 diagnostic screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-MnO2 cells ship in a storage state and may read as low as 5.4–5.6V immediately after installation. This is normal — the cell is not defective. The MR-J4 float circuit will bring the measured voltage up to the 6V operating band within a few hours of the drive being powered. If the voltage has not recovered to at least 5.8V after 24 hours of powered operation, check the connector seating before assuming a faulty cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415980736602,"sku":"BWCS-PLC267SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415980769370,"sku":"BWCS-PLC267SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415980802138,"sku":"BWCS-PLC267SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLC267SL-1.webp?v=1779758818","url":"https:\/\/batteryweb.com\/products\/mitsubishi-mr-j4-replacement-battery-6v-1650mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}