Device · Epson

Epson EcoTank ET-3850 All-in-One

verified 2026-10-07 Specs from Epson US ET-3850 product page. Also known as: ecotank et-3850, et-3850, et3850.

Specs

technologyink tank

Takes

  • ink Epson 502 (T502) EcoTank ink bottles (US)
    Keyed EcoFit refill bottles for US EcoTank ET-2700/2750/2760/2850/2980, ET-3700/3830/3850/3950 and ET-4750/4850/4950 series.

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Good to know
  • Not interchangeable with 522 bottles: ET-2850 and ET-3850 take 502, but ET-2800 and ET-4800 take 522.
  • Epson rates 502 replacement bottles in the ET-3850 at about 7,500 black / 6,000 color ISO pages.
  • "Epson T502" and "Epson 502" are the same US product (SKU T502120-S for black). Outside the US, EcoTank printers use different bottle series (e.g., 104/103 in Europe).
  • Part of the included ink is used for initial setup, so included-ink yields are lower than replacement bottles.
  • Epson strongly recommends genuine ink; non-genuine ink damage is not covered by the limited warranty.

What fits the Epson EcoTank ET-3850 All-in-One?

2 parts and accessories in the graph work with this model. OEM parts first.

ink bottle

Informational only. Confirm with the manufacturer before buying or installing. Spotted a mistake? Report it.