HPE 96W Smart Storage Battery P01366-B21 / 878643-001 / 881093-001 | ProLiant Gen9 / Gen10 — Smart Array RAID Cache Backup
1. Key Features
- HPE 96W Smart Storage Battery — provides write-cache backup power for HPE Smart Array RAID controllers and HPE NVDIMMs in ProLiant Gen9 / Gen10 servers
- HPE Part Numbers: P01366-B21 (Option PN) / 878643-001 / 881093-001 / 871264-001 / 875241-B21 — same physical unit, interchangeable across compatible Gen9 / Gen10 platforms
- Battery technology: Lithium-Ion (Li-Ion), rechargeable, low-halogen compliant
- 96W (Megacell) capacity — centralized design supports up to 20 devices per server in a single battery module
- Protects write-cache content: on unplanned power loss, the battery allows the controller to flush cached data to flash memory — preventing data loss
- Also serves as backup power source for HPE NVDIMMs — allows in-flight DRAM data to be moved to non-volatile NAND flash on power failure
- Includes 145mm power input cable for easy installation into the server battery bay
- One battery per server — centralized architecture eliminates the need for individual batteries per controller card
2. Technical Specifications
| Brand |
HPE (Hewlett Packard Enterprise) |
| Condition |
New Original (Genuine HPE) |
| HPE Option PN |
P01366-B21 / 875241-B21 |
| HPE Spare PN |
878643-001 / 881093-001 / 871264-001 |
| Battery Type |
Lithium-Ion (Li-Ion), Rechargeable, Low-Halogen |
| Capacity |
96W (Megacell) |
| Voltage |
7.2V |
| Max Devices |
Up to 20 devices per server (centralized) |
| Cable Length |
145mm power input cable (included) |
| Compatible Gen |
HPE ProLiant Gen9 / Gen10 (P-class Smart Array controllers) |
| Hot Plug |
No |
| Compliance |
Low-Halogen |
3. Compatible Models
HPE ProLiant Gen10 Rack Servers (DL / XL):
- HPE ProLiant DL20 Gen10 / DL160 Gen10 / DL180 Gen10
- HPE ProLiant DL360 Gen10 / DL380 Gen10 / DL560 Gen10 / DL580 Gen10
- HPE ProLiant XL170r Gen10 / XL190r Gen10 / XL230k Gen10
HPE ProLiant Gen9 Rack / Tower Servers:
- HPE ProLiant DL360 Gen9 / DL380 Gen9 / DL560 Gen9 / DL580 Gen9
- HPE ProLiant ML350 Gen9
HPE Smart Array RAID Controllers (P-class Gen9 / Gen10):
- HPE Smart Array P408i-p SR Gen10 / P408e-p SR Gen10
- HPE Smart Array P440 / P440AR / P840 / P840AR (Gen9)
HPE NVDIMMs:
- HPE NVDIMM (requires battery backup — compatible Gen9 / Gen10 platforms)
Always verify the HPE part number on your existing battery or system QuickSpecs before purchasing.
4. Package Contents
- 1 x HPE 96W Smart Storage Battery P01366-B21 / 878643-001 (New Original)
- 1 x 145mm power input cable (included)
5. Warranty
- 90-day replacement warranty
- Covers manufacturing defects; physical damage and improper installation not included
6. Additional Notes
- P01366-B21 is the HPE Option Part Number (customer-order PN); 878643-001 / 881093-001 / 871264-001 are HPE Spare Part Numbers — all refer to the same physical 96W Smart Storage Battery module.
- This is a centralized Megacell battery module — one unit supports multiple RAID controllers in the same server. Do not confuse with the smaller MC96 individual cache battery cell (7.2V 8Wh) used inside older Gen8 / Gen9 controller cards without a centralized battery bay.
- Required for write-cache protection on HPE Smart Array P-class (performance-tier) controllers. Without this battery, the RAID controller may default to write-through mode, reducing performance.
- Also required for HPE NVDIMM operation — without it, NVDIMMs cannot be used in persistent memory mode.
- Verify your server model supports the centralized battery bay (battery tray slot) — refer to HPE QuickSpecs or server maintenance guide before ordering.
- New original HPE unit — not refurbished or aftermarket.
