HP EliteBook 840 G8 accessories
Check a charger, dock or monitor for this computer.
Can the HP Smart AC adapter, nPFC, 4.5mm (741727-001) charge the HP EliteBook 840 G8?
Yes, with the charging requirements below.
Charging
HP lists these exact AC adapter spare parts in the EliteBook 840 G8 service guide.
- Match the genuine HP spare-part number on the actual adapter. Equal watts or a similar connector do not establish another adapter's compatibility.
- Use the adapter directly with the documented USB-C charging port or matching HP Smart 4.5 mm power input; this does not establish a dock or converter connection.
- Check the power requirement for the laptop's exact configuration. A listed lower-power adapter does not guarantee full performance or fast charging.
- Use the correct regional mains cord. A service spare listing does not establish the seller's box contents.
Sources
HP EliteBook 840/846 G6 service guide
HP EliteBook 840 G8 specifications
HP EliteBook 840 G8 Maintenance and Service Guide: power ports and exact adapter spares
Maintenance and Service Guide. PDF page 11, Table 1-1 identifies EliteBook 840 G8. PDF pages 16-17 (printed 6-7), Table 2-1
API request and response
{
"host_id": "hp-elitebook-840-g8",
"power_supply_id": "hp-psu-741727-001"
}{
"schema_version": "0.5.0",
"rule_version": "0.4.2",
"data_version": "2026-09-23.1",
"data_sha256": "bafabaf5b5eb570d415a4597e4e8fa3c893423d9ef8538a6b0e79477a8ec69f8",
"release_status": "commercial",
"host_id": "hp-elitebook-840-g8",
"monitor_id": null,
"power_supply_id": "hp-psu-741727-001",
"status": "conditional",
"display": {
"status": "not_requested",
"code": "display-not-requested",
"explanation": "No monitor selected.",
"source_ids": [],
"rule_ids": [],
"missing": [],
"conditions": []
},
"connection": {
"status": "not_requested",
"code": "cable-not-requested",
"explanation": "No display cable required by this request.",
"source_ids": [],
"rule_ids": [],
"missing": [],
"conditions": []
},
"power": {
"status": "conditional",
"code": "manufacturer-charger-option",
"explanation": "HP lists these exact AC adapter spare parts in the EliteBook 840 G8 service guide.",
"source_ids": [
"hp-840g6-service",
"hp-840g8-ports",
"hp-840g8-service-chargers-2026-09-23"
],
"rule_ids": [
"hp-elitebook-840-g8-reviewed-chargers-20260923"
],
"missing": [],
"conditions": [
"Match the genuine HP spare-part number on the actual adapter. Equal watts or a similar connector do not establish another adapter's compatibility.",
"Use the adapter directly with the documented USB-C charging port or matching HP Smart 4.5 mm power input; this does not establish a dock or converter connection.",
"Check the power requirement for the laptop's exact configuration. A listed lower-power adapter does not guarantee full performance or fast charging.",
"Use the correct regional mains cord. A service spare listing does not establish the seller's box contents."
]
},
"paths": [],
"sources": [
{
"id": "hp-840g6-service",
"title": "HP EliteBook 840/846 G6 service guide",
"url": "https://kaas.hpcloud.hp.com/pdf-public/pdf_12664225_en-US-1.pdf",
"locator": "PDF pp18-20: alternative USB-C DP and Thunderbolt/charging configurations; pp13-14 baseline; p39 exact adapter spares. Diagrams reviewed; the two USB-C symbols are alternatives, not two ports.",
"checked_on": "2026-09-07",
"review_status": "reviewed",
"review_after_days": 180,
"permission": "commercial_cleared",
"permission_basis": "Commercial use of independently normalized technical facts and independently authored compatibility outputs accepted under SJ-SOURCE-2026-09-11.2, research/SOURCE_USE_REVIEW_2026-09-11.md, for the exact 2026-09-11.1 snapshot. Applied in SJ-SOURCE-2026-09-23.1. This records our accepted source-use basis, not manufacturer permission or legal certification. Original documents, artwork, marketing prose and commercial feeds are not redistributed; recorded source-specific exceptions and collection restrictions remain in force. Earlier evaluation-only wording is superseded; its original record remains in the hash-pinned baseline.",
"sha256": "a3cc470ab3c2116abb7c9ff2c0d0b1875eb4637e7a04f6cd7305c868b214c5b1"
},
{
"id": "hp-840g8-ports",
"title": "HP EliteBook 840 G8 specifications",
"url": "https://support.hp.com/us-en/document/c06978058",
"locator": "Official indexed Ports/slots table:2 Thunderbolt4 USB4,2 USB-A,HDMI2.0. Direct page inaccessible on recheck; charging not independently promoted from the absent power section.",
"checked_on": "2026-09-07",
"review_status": "reviewed",
"review_after_days": 180,
"permission": "commercial_cleared",
"permission_basis": "Commercial use of independently normalized technical facts and independently authored compatibility outputs accepted under SJ-SOURCE-2026-09-11.2, research/SOURCE_USE_REVIEW_2026-09-11.md, for the exact 2026-09-11.1 snapshot. Applied in SJ-SOURCE-2026-09-23.1. This records our accepted source-use basis, not manufacturer permission or legal certification. Original documents, artwork, marketing prose and commercial feeds are not redistributed; recorded source-specific exceptions and collection restrictions remain in force. Earlier evaluation-only wording is superseded; its original record remains in the hash-pinned baseline.",
"sha256": null
},
{
"id": "hp-840g8-service-chargers-2026-09-23",
"title": "HP EliteBook 840 G8 Maintenance and Service Guide: power ports and exact adapter spares",
"url": "https://kaas.hpcloud.hp.com/pdf-public/pdf_12642651_en-US-1.pdf",
"locator": "Maintenance and Service Guide. PDF page 11, Table 1-1 identifies EliteBook 840 G8. PDF pages 16-17 (printed 6-7), Table 2-1: two USB-C power/Thunderbolt ports charge the computer; separate AC power connector. PDF page 34 (printed 24), Table 3-6: L32392-001 is the 65 W USB-C RC 1.8 m spare and 741727-001 the 45 W Smart RC 4.5 mm spare. The final 45 W USB-C wall-mount row has no spare number and is not promoted. No fast-charge or high-load guarantee inferred.",
"checked_on": "2026-09-23",
"review_status": "reviewed",
"review_after_days": 365,
"permission": "commercial_cleared",
"permission_basis": "Commercial use of independently normalized charger facts from this exact HP-authored service guide accepted under SJ-SOURCE-2026-09-23.1, research/commercial-release-2026-09-23/README.md. The assessed addition is limited to the documented power ports and exact adapter spare relationships identified by this source's URL, locator and SHA-256. This is our source-use assessment, not manufacturer permission or legal certification. No original manual, illustration or prose is redistributed. Existing HP access/use-risk findings and collection restrictions remain in force.",
"sha256": "bf26b4ae08e9cc0ec1b3dbfd51b9fa16ab3687c2df213191287da0ee7812a7ce"
}
],
"scope": "One directly connected external monitor and/or a replacement laptop charger. No dock, daisy chain or multi-monitor conclusion. Product choices do not imply ownership, stock or included cables. Monitor mains power is separate. Documented compatibility, not physical testing; supported drivers and firmware are assumed."
}Product sources
- HP EliteBook 840 G8 specifications Reviewed 2026-09-07
- HP EliteBook 840 G8 Maintenance and Service Guide: power ports and exact adapter spares Reviewed 2026-09-23