Introducing our low-cost compatible HP 645A black toner cartridges —a budget-friendly solution without compromising quality.

Manufactured to the highest standards, our compatible HP 645A black toner cartridge guarantees the same quality of prints and the same quantity of prints as the original version, providing exceptional prints every time.

Choosing our low cost HP C9730A toner over OEM means substantial savings without compromising performance. We are committed to offering the lowest online prices, ensuring you get the best value compatible HP 645A black printer cartridges for your printing needs, we promise unmatched affordability without compromising on performance. Experience high-quality printing without the hefty price tag.

Rest easy with our no-risk purchase—our compatible HP C9730A cartridges come with a full 12-month guarantee. Plus, by law, using compatible HP 645A black toner won't invalidate your printer warranty, providing peace of mind.

Order HP 645A black compatible cartridges before our specified deadline for next working day delivery. For detailed information on our order cut-off times, please check our delivery information page. 


Upgrade your printing experience with cost-effective and high-quality premium compatible HP 645A black toner cartridges from The Cartridge Centre.

Ever wonder why printer manufacturers are so keen on firmware updates? They say it's to enhance printing speed, fix bugs, and ensure smoother operation. However, there's more to it than just improving your experience. Printer manufacturers release these updates to control your printing options and influence your purchasing decisions, it's no secret printer manufacturers make most of their profit from selling their own branded ink cartridges.

Just as your mobile phone or computer receives updates, printers also need periodic updates. While it's usually a no-brainer to update your phone or computer, you might want to think twice before updating your printer. These updates can render compatible cartridges useless, forcing you to buy their costly branded ones.

To safeguard your printing experience, disable automatic firmware updates in your printer’s settings. This will help prevent any disruptions.

By choosing to opt out of firmware updates, you can maintain the ability to use cost-effective compatible cartridges, avoiding the higher costs of branded ones. Remain alert for update notifications and decline them to preserve your options.

Since each printer varies, it's always advisable to consult your specific printer manual on how to disable firmware updates.

Can compatible HP 645A black toner cartridges dry out?

HP 645A black toner cartridges will not dry out as they are not liquid. HP C9730A toners from The Cartridge Centre will still perform perfect printing even if they haven't been used for a while.

Will this compatible HP 645A black toner cartridge work in my printer?

Click here to find out which printers this item is compatible with.

Where can I buy cheap HP 645A black toner?

At The Cartridge Centre, we take pride in providing budget-friendly solutions for your printing needs. Our low-cost HP C9730A compatible toner cartridges are designed to deliver the same exceptional results as the OEM version, ensuring quality prints at a fraction of the cost. We are committed to offering you the most competitive prices online, promising unmatched affordability without compromising on performance. Trust The Cartridge Centre for reliable, cost-effective alternatives that guarantee a seamless printing experience while maximizing your savings.

How many pages does compatible HP 645A black toner print?

Prints approx 13,000 pages @ 5% coverage.