815983-001 is the HPE spare part number for 96W Megacell Smart Storage Battery with 145mm Cable. If you pulled this number from an iLO event log, HPE service documentation, or the label on a failed battery, this is the direct replacement. It is a 96W Megacell Smart Storage Battery supplied with a 145mm (5.7 inch) power cable, used to back up cache on Smart Array controllers in HPE ProLiant Gen9 servers including the DL20, DL60, DL80, DL120, DL160, DL180, DL380, DL388, DL560 and the ML110, ML150 and ML350. Confirm the 145mm cable length matches your chassis routing before installing.
HPE Option Part #: 727258-B21
HPE Spare Part #: 750450-001, 815983-001, 878643-001
HPE Model #: 727260-001, 727260-002
PRODUCT SPECIFICATIONS FOR 815983-001:
- Device Type: Battery
- Connectivity Details Length: 5.7 inch (145mm)
- Connectivity Details Type: Power Cable
- Watts: 96W Megacell
- Battery type: Smart Storage
COMPATIBLE WITH:
PROLIANT DL SERIES
PROLIANT ML SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS ABOUT 815983-001
What is the difference between 815983-001, 727258-B21 and 750450-001?
They identify the same physical battery. 815983-001, the number on this page, is a spare part number, used by HPE service documentation and printed on replacement parts. 727258-B21 is the option kit number, the orderable assembly part number a server was originally configured with. 750450-001 is another spare number for the same battery. This family also includes two OEM drive model numbers and one further spare number, all listed in the cross-reference block on this page.
What is an assembly part number versus an OEM model number?
An assembly part number, such as the option kit number, identifies the orderable package HPE sells or factory-installs, and it is the number you would find on a purchase order or server configuration. An OEM model number identifies the manufactured unit itself and is often printed on the hardware label rather than used for ordering. Both point to the same physical battery covered by this page.
Which servers does 815983-001 support?
This battery is listed for HPE ProLiant Gen9 servers: DL20 Gen9, DL60 Gen9, DL80 Gen9, DL120 Gen9, DL160 Gen9, DL180 Gen9, DL380 Gen9, DL388 Gen9, DL560 Gen9, and the ML110 Gen9, ML150 Gen9 and ML350 Gen9. Cable routing differs between rack and tower chassis, so check that the 145mm cable reaches the battery mounting point in your specific model before ordering.
What does the cable length matter for?
The Smart Storage Battery connects to the controller or system board through a dedicated power cable, and HPE supplies this battery in several cable lengths for different chassis layouts. This part carries a 145mm (5.7 inch) cable. If your failed battery used a different cable length, that is a different part number, so match the length recorded in your service documentation or measured from the removed unit.
Do I need to replace anything else when swapping this battery?
The Smart Storage Battery is a self-contained unit with its own power cable, so the battery and cable are replaced together. The Smart Array controller and its cache module are separate parts and are not included. After installation, check iLO or the controller utility to confirm the battery is recognized and charging before returning cache-dependent write policies to normal.
HPE PARTSURFER INFO FOR 815983-001 (727258-B21)
| Spare PN | Description | |
|---|---|---|
 | 750450-001 | 96W Smart Storage Battery - For DL/ML/SL Generation 9 series of servers - One battery pack provides flash back write cache (FBWC) for all the drive controllers in the server - Connects to the system I/O board, 145mm (5.7-inch) long cable |
| 815983-001 | 96W Smart Storage Battery - For DL/ML/SL Generation 9 series of servers - One battery pack provides flash back write cache (FBWC) for all the drive controllers in the server - Connects to the system I/O board, 145mm (5.7-inch) long cable |
Last Updated: 2026-08-06
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This product is warrantied against hardware failure for a period of 30 Days from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
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