HP EliteBook 840 G3
Laptop, from 2016 154 hardware reports
Memory
Up to 32 GB
2 laptop-size slots
Battery
47 Wh
Internal pack
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 32 GB seen working.
It takes DDR4-2133 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-2133 260-pin SO-DIMM
- Most seen working
- 32 GB in two or more machines
- Firmware says
- 32 GB maximum
- How sure
- 151 of 154 reports show this layout
See 16 GB DDR4-2133 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
From 154 reports of this machine in the Linux Hardware Database (CC BY 4.0). Updated 9 Nov 2026.
2 laptop-size slots
Illustration Battery
A 47 Wh battery.
That is the capacity the batteries in these machines report.
From the design capacity the batteries report, in 130 reports. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the HP EliteBook 840 G3?
Yes. 2 slots, up to 32 GB seen working. It takes DDR4-2133 laptop-size sticks (SO-DIMM).
What type of RAM does the HP EliteBook 840 G3 use?
DDR4-2133 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the HP EliteBook 840 G3 take?
Machines in the reports run up to 32 GB. That matches the 32 GB maximum the firmware reports.
What battery does the HP EliteBook 840 G3 use?
A 47 Wh battery, going by the batteries in 130 reports.
Is this my laptop?
Check the model name on the label underneath. It should read EliteBook 840 G3.