{"product_id":"nexergy-netapp-n3600-replacement-battery-74v-6800mah-li-ion","title":"NetApp N3600 RAID Controller Replacement Battery 7.4V 6800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNexergy NetApp N3600 — 7.4V Li-ion Replacement Battery (271-00011)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 6800mAh (50.32Wh) lithium-ion battery replaces OEM part 271-00011 in the NetApp N3600 RAID storage controller. It provides backup power to the controller's write cache during an unexpected power loss, protecting data held in volatile memory. When the existing cell degrades, the controller drops to write-through mode and cached data becomes vulnerable.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNetApp N3600 controller fit:\u003c\/strong\u003e\n    The N3600 controller uses a dedicated battery-backed write cache circuit. This cell matches the 7.4V nominal voltage rail and the connector pinout the controller expects for BMS handshake and charge-state reporting over the SMBus interface.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the controller interface. The BMS reported charge state correctly, the controller accepted the cell without fault codes, and write-back mode was restored after the learn cycle completed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation learn cycle:\u003c\/strong\u003e\n    After fitting this battery, initiate a learn cycle from the ONTAP management interface using \u003ccode\u003esystem controller battery show\u003c\/code\u003e. The controller will stay in write-through mode until the cycle completes and recalibrates the backup window estimate against the new cell's actual capacity. This takes 24–72 hours under normal load.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRAID controller staying in write-through mode after battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eSwapping the battery does not automatically return the controller to write-back mode. The N3600 controller requires the battery to pass a full learn cycle before it trusts the new cell's reported backup window. Until that recalibration completes, the controller treats the battery state as unknown and keeps write caching disabled. Run \u003ccode\u003esystem controller battery show\u003c\/code\u003e in ONTAP to monitor learn cycle status — write-back mode re-enables once the controller confirms a backup window above its minimum threshold, typically above 3.0V per cell at end-of-discharge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eONTAP showing a battery error several days after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eONTAP runs its battery assessment on a timed schedule, not at the moment you install a new cell. If the scheduled self-test fires before the learn cycle has finished, the controller may log a battery fault even though the cell is functioning correctly. The fault clears on the next assessment once the learn cycle has completed and the BMS can report a valid backup window. If the error persists beyond 72 hours post-installation, check cell voltage at the connector — it should read between 7.2V and 8.4V under float charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416091689050,"sku":"BWCS-NEP361BU-1","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416091721818,"sku":"BWCS-NEP361BU-2","price":74.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416091754586,"sku":"BWCS-NEP361BU-3","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NEP361BU-1.webp?v=1779760241","url":"https:\/\/batteryweb.com\/products\/nexergy-netapp-n3600-replacement-battery-74v-6800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}