HP Deskjet 3845 3847 Ink Cartridges
Shop ink cartridges for your HP Deskjet 3845 and 3847 printers, which use the HP 27 and 28 ink cartridges series. Ink Depot has been supplying reliable consumables for these printers since Sep 2009. Designed as compact thermal inkjets for basic home document tasks, these models handle everyday text and family printing efficiently. Installing compatible C8727AA black ink cartridges delivers sharp monochrome results without excessive per-page costs. Our 4.8 Google rating reflects a long-standing track record of premium cartridge performance.
Expected page output for HP 27 cartridges
Page yields for HP thermal inkjet cartridges are measured under ISO/IEC 24711 testing standards using standard continuous printing coverage. Actual page counts vary depending on page coverage, print density, and document complexity.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 27 | Standard | Black | 220 | $0.091 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Compatible cartridges.
Why choose compatible HP 27 ink cartridges?
Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Opting for non-OEM options offers substantial savings for standard household printing. Read our guide comparing genuine vs compatible cartridges to learn more about how alternative consumables deliver consistent everyday results.
Stocking up and order delivery
If you print mainly text documents, keeping a spare compatible C8727AA black ink cartridge on hand prevents sudden interruptions during important print runs. All compatible cartridges are backed by our money-back guarantee for peace of mind under our returns policy. Free delivery applies on all orders over $99. We dispatch quickly from warehouses in Perth, Brisbane, Sydney, Melbourne and Adelaide so you receive your HP ink cartridges without delay.
Pro Tip
HP thermal printheads are built directly into the 27 series cartridge body, meaning replacing the ink cartridge automatically renews the print mechanism for consistent output clarity.
Frequently Asked Questions
Do the HP Deskjet 3845 and Deskjet 3847 use the same ink cartridges?
Yes, both printer models share the same HP 27 black and HP 28 tri-colour cartridge slots and use identical physical replacements.
What happens if an older HP 27 cartridge sits unused in the printer for months?
Because the printhead is integrated into the cartridge itself, dried ink in the nozzles can often be cleared by running a standard printhead cleaning cycle from your computer without risking permanent damage to the printer internal components.
Can I install a compatible C8727AA cartridge alongside a genuine HP colour cartridge?
Yes, compatible black cartridges operate independently from colour cartridges, allowing you to mix compatible and original units without recognition issues.
Why does the black ink cartridge run out faster during plain text printing?
Monochrome document printing draws ink exclusively from the C8727AA black cartridge, while colour elements draw from the separate tri-colour unit, leading to uneven depletion rates based on the type of files you print.
