Replacement for 42R3965: Drop-In Alternatives We Stock
Looking for a replacement for the 42R3965 (42R3965 - IBM 3.6V 3.9AH SAS 8PIN Cache Battery)? Pro Disk Network ships IBM drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the 42R3965
| SKU | 42R3965 |
|---|---|
| Product | 42R3965 - IBM 3.6V 3.9AH SAS 8PIN Cache Battery |
| Current price | $395.34 |
| Stock status | In Stock |
| Detail page | View 42R3965 › |
Drop-in replacements for 42R3965
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
92P1151 - IBM Lenovo ThinkPad Extended Life Battery Notebook battery 1 x lithium ion
SKU: 92P1151
Price: $265.26
44W2171 - IBM 300MBPS SAS Fibre Channel RAID Controller for DS3400 Storage with 512MB Cache without Battery
SKU: 44W2171
Price: $485.71
39R6571 - IBM 300MBPS SAS Fibre Channel RAID Controller for DS3400 Storage with 512MB Cache without Battery
SKU: 39R6571
Price: $485.71
00Y2465 - IBM 0.6m SAS Cable (mSAS HD) SAS for Storage Drive 1.97 ft Mini-SAS Mini-SAS
SKU: 00Y2465
Price: $450.00
39J5554 - IBM RAID Controller Cache Battery for IBM 2780, 5580, 5708, 5780
SKU: 39J5554
Price: $344.33
97P4846 - IBM RAID Controller Cache Battery for IBM 2780, 5580, 5708, 5780
SKU: 97P4846
Price: $344.33
46C9010 - IBM N2125 SAS/SATA HBA for IBM System x 6Gb/s SAS PCI Express 3.0 x8 Plug-in Card 2 SAS Port(s)
SKU: 46C9010
Price: $539.68
46M0829 - IBM ServeRAID M5015 SAS/SATA PCI-Express 2 Controller with Battery
SKU: 46M0829
Price: $65.26
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.