Which battery fits the HP EliteBook 840 G8? OEM part numbers

1 battery is documented for the HP EliteBook 840 G8: L78555-005. 1 of 1 comes from OEM documentation (partsurfer.hp.com); last checked 2026-10-23. Not bench-tested: match the number on your old battery and any constraint before ordering.

Part number	Part	Constraints	Confidence	Last checked
L78555-005	HP L78555-005 Battery	Listed for all 8 checked HP EliteBook 840 G8 product numbers. HP description: "SKO-BATT 3C 53Wh 4.59Ah LI CC03053XL-PL". Confirm your product number on HP PartSurfer before ordering. OEM parts list only; not bench-tested. Config limit: in the cached HP PartSurfer BOMs this part is listed on 9 of 10 checked product numbers (3D2H5US, 3V088US, 545Y8US, 54N20US, 55F54US, 560P9US, 563N2US, 579Y3US, 60R89US); confirm your product number on HP PartSurfer before ordering.	OEM documented	2026-10-23

Where do these HP EliteBook 840 G8 battery part numbers come from?

1 of 1 fits are from OEM documentation (partsurfer.hp.com); each row links its source. Last checked 2026-10-23.

Are these batteries tested in the HP EliteBook 840 G8?

No. Fits come from manufacturer or retailer documentation and are not bench-tested. Check the part number on your old part and any listed constraint.

All documented parts for the HP EliteBook 840 G8.

Other parts for the HP EliteBook 840 G8

Power Adapter (6) · RTC Battery (1) · Hinge (1) · Display Bezel (5) · Display Cable (1) · Cable (7) · Display Back Cover (4) · Bottom Cover (1) · Keyboard (6) · Screen (6) · Fingerprint Reader (1) · I/O Board (1) · Touchpad (3) · Heat Sink (2) · Camera (3) · Speakers (2) · Power Cord (69) · SSD (14) · Wireless Card (4) · Fan (1) · Card Reader (1) · Microphone (2) · Motherboard (6) · Service Part (3) · Memory (4) · Screw Kit (1)

For AI agents: the same list as JSON from the free MCP server at /mcp (tool get_model_parts, model hp-elitebook-840-g8) or the keyless JSON API.