Epson EcoTank WorkForce ET-16500 Ink Bottles
Your Epson EcoTank WorkForce ET-16500 uses the T664 ink bottles, which includes the high-capacity T774 black ink. Ink Depot has been supplying reliable consumables for this continuous ink printer since Jun 2020. Since this high-volume office system utilises separate high-capacity ink bottles rather than standard cartridges, users rarely change inks simultaneously, meaning you can top up individual colour reservoirs exactly as they deplete. Our 4.8 Google Star rating shows that our customers consistently receive high-quality cartridges backed by reliable performance.
Real-world page output and replacement cycles
Epson determines the page yield numbers for these T664 and T774 ink bottles using the ISO/IEC 24712 international standard for inkjet printers, testing continuous printing with a mixed text and graphics template. In a high-volume office environment, the actual number of prints you achieve depends on how heavily your workplace prints wide-format graphics versus standard documentation.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| C13T664292 | Standard | Cyan | 6,500 | $0.003 |
| C13T664392 | Standard | Magenta | 6,500 | $0.003 |
| C13T664492 | Standard | Yellow | 6,500 | $0.003 |
| C13T774192 | High Yield | Black | 6,000 | $0.004 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Choosing between genuine and compatible options
Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Opting for our compatible T664 or T774 ink bottles provides a highly cost-effective way to manage office print overheads without altering your daily workflows. To help you make an informed decision on what goes into your printer, you can read our guide comparing genuine vs compatible cartridges.
Managing other maintenance items
This wide-format office printer relies on more than just ink to keep running smoothly; it also requires a C13T671100 maintenance kit to collect excess ink from automated printhead cleaning cycles. Experience Tip: When your printer alerts you that the maintenance box is nearing the end of its lifecycle, swap it out promptly to prevent the printer from locking up mid-job.
How most offices manage stock and delivery
Office teams printing large text documents generally consume the T774 black ink at double the rate of the individual T664 cyan, magenta, and yellow colours. Choosing bundle packs is an efficient way to keep all colours on hand, and our compatible options include a money-back guarantee through our Returns policy if they do not meet expectations. Free delivery applies on all orders over $99 (conditions apply), with all orders shipped rapidly from our regional warehouses in Perth, Brisbane, Sydney, Melbourne, and Adelaide. You can check the main hub for more Epson ink bottles to find supplies for companion equipment.
Pro Tip
Always wait for the printer to explicitly signal that an ink tank is low before refilling it, as overfilling the physical reservoirs past the maximum line can disrupt the internal pressure system and cause pooling or streaking on wide-format prints.
Frequently Asked Questions
Can I use standard T664 black instead of the T774 black bottle in my ET-16500?
No, you should stick to the T774 black ink bottle. The T774 black is a pigment-based ink formulated specifically for sharp office text and matches the internal printhead configuration of the ET-16500, whereas standard T664 black is a dye-based ink intended for smaller home Expression models.
Why does my printer say the maintenance kit needs replacing if I only print text?
The printer routes excess ink from automatic head-cleaning cycles and borderless margin flushes into the C13T671100 maintenance box. High-volume document printing still triggers periodic internal maintenance routines to keep the wide-format nozzles clear, causing the box to fill up independently of your overall ink levels.
Do I need to wait until the ink bottles are completely empty to refill the tanks?
It is best to refill the printer reservoirs as soon as the ink levels drop to the lower limit line on the exterior window. Running the ink tanks completely dry allows air into the internal ink delivery tubes, which requires a heavy "Power Ink Flushing" cycle to clear, unnecessarily wasting a large amount of your remaining ink.
