HP EliteBook 865 16 inch G9 Notebook PC
Yes. 2 slots, up to 64 GB seen working.
It takes DDR5-4800 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR5-4800 262-pin SO-DIMM
- Most seen working
- 64 GB in two or more machines
- Firmware says
- 64 GB maximum
- SSD slots
- At least 1 M.2 SSD slot listed by the firmware
- How sure
- 14 of 14 reports show this layout
Worked out from 14 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 51 Wh or 76 Wh.
That is the design capacity the batteries themselves report, and the label can read 1 to 3 Wh higher. Other pack sizes may have shipped, so check the capacity printed on yours before you order.
From 14 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the HP EliteBook 865 16 inch G9 Notebook PC?
Yes. 2 slots, up to 64 GB seen working. It takes DDR5-4800 laptop-size sticks (SO-DIMM).
What type of RAM does the HP EliteBook 865 16 inch G9 Notebook PC use?
DDR5-4800 laptop-size sticks (SO-DIMM, 262-pin).
How much RAM can the HP EliteBook 865 16 inch G9 Notebook PC take?
Machines in the reports run up to 64 GB. That matches the 64 GB maximum the firmware reports.
Does the HP EliteBook 865 16 inch G9 Notebook PC have an M.2 SSD slot?
Yes. The firmware lists at least 1 M.2 SSD slot, in 14 reports. Some firmware leaves a slot out, so there may be more.
What battery does the HP EliteBook 865 16 inch G9 Notebook PC use?
Batteries in these laptops report 51 Wh or 76 Wh, going by 14 reports. Other pack sizes may have shipped, so check the capacity printed on yours.
Is this my laptop?
Check the model name on the label underneath. It should read EliteBook 865 16 inch G9 Notebook PC.