{"product_id":"sun-t2510-replacement-battery-25v-6600mah-li-ion","title":"Sun 371-2482 RAID Controller Replacement Battery 2.5V 6600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSun T2510 \/ T2530 \/ T2540 — 2.5V Li-ion RAID Controller Replacement Battery (371-2482)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.5V, 6600mAh (16.5Wh) lithium-ion battery for the Sun T2510, T2530, and T2540 RAID controller modules. It provides backup power to the controller cache during unexpected power loss, protecting write operations in flight. OEM part number 371-2482.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT2510 \/ T2530 \/ T2540 controller fit:\u003c\/strong\u003e\n    These three controllers share the same battery bay, connector pinout, and BMS handshake protocol. One cell covers all three without any adapter or firmware workaround.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the controller's BMS charge and discharge cycle. The BMS accepted the cell, initiated the learn cycle, and transitioned the controller from write-through to write-back mode after the calibration window completed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLearn cycle initiation after swap:\u003c\/strong\u003e\n    After installing this battery, trigger the learn cycle manually from ONTAP using \u003ccode\u003esystem controller battery show\u003c\/code\u003e or from StorCLI using \u003ccode\u003e\/cx bbu show\u003c\/code\u003e. The controller will remain in write-through mode until the learn cycle finishes and recalibrates the backup window against the new cell's actual capacity.\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\"\u003eWrite-through mode is not a fault — it is the controller's default safe state when it cannot verify the backup window. After a battery swap, the controller does not automatically recalibrate. The learn cycle must complete before the controller calculates a backup window and switches to write-back. On ONTAP, run \u003ccode\u003esystem controller battery show\u003c\/code\u003e to confirm learn cycle status. Expect 24–72 hours under normal load before the transition occurs.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eManagement console reporting a battery error days after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis catches many users off guard — the battery appears installed and charging, but an error surfaces 48–96 hours later. The controller runs its battery health assessment on a timed interval, not at boot. The scheduled self-test queries the BMS for state-of-health data that only exists after the learn cycle completes. If the test fires before calibration finishes, the controller logs a fault. Let the learn cycle run to completion, then verify cell voltage sits at or near 2.5V before clearing the alert.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416092573786,"sku":"BWCS-DEM300BU-1","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416092606554,"sku":"BWCS-DEM300BU-2","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416092639322,"sku":"BWCS-DEM300BU-3","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DEM300BU-1.webp?v=1779760263","url":"https:\/\/batteryweb.com\/products\/sun-t2510-replacement-battery-25v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}