SKU:

CS-Brother-OEM-TN850-DR820-4-set

Printer Brand:

Brother

OEM Number:

TN850, DR820

Ink Color:

Black

Page Yield:

Toner:8000, Drum:30000

Printer Type:

Laser Cartridge

Condition:

New

Frequently Asked Questions

How long does one of these bundles keep a busy department printer fed?

Work it out from your monthly page count. The three TN850 cartridges in this box hold 24,000 pages of toner between them, so a department printing around 2,000 pages a month is looking at roughly a year before the last cartridge runs dry; at 4,000 pages a month, plan on about six months. The DR820 drum works to a different clock entirely — it is rated for 30,000 pages — so it will still be in service after all three cartridges are spent. For a single hard-working machine on this workgroup platform, one bundle is close to a full cycle of consumables in a single delivery, with the drum already in hand for the change this cycle needs.

What does the per-page maths look like once the drum is counted in?

Bought on their own at today's prices, three TN850 cartridges at $140.79 and one DR820 drum at $159.29 come to $581.66; this bundle is $523.49, which is $58.17 less for exactly the same genuine parts. Spread across the 24,000 pages of toner in the box, the bundle works out at roughly 2.2 cents a page — and that figure slightly overstates the true cost, because the drum is not used up by these cartridges: some 6,000 pages of its rated life remain when the third TN850 empties, and that leftover drum capacity carries straight into your next cartridge cycle at no extra cost. Against the $785.24 combined list price, you are also paying $261.75 under list.

Our print volume swings a lot from month to month — does shelf stock of three cartridges still make sense?

It is arguably the pattern this box suits best. The cartridges are individually sealed genuine Brother units, so the second and third TN850 sit on the shelf until the machine asks for them — nothing is opened early and nothing is wasted in a quiet month. When a heavy quarter lands — a big mailing, an audit, a contract run — the spare is already in the building instead of on a courier's van, and nobody is paying rush prices or watching a workgroup printer sit idle. The one discipline worth keeping is rotation: fit the cartridges in the order you bought them, oldest first.

How will I know when this drum has finally reached the end of its 30,000 pages?

The printer keeps count and will tell you: expect a drum warning on the display or in the status monitor as the total approaches. Put in page terms against this bundle, the DR820 outlasts all three TN850 cartridges — 24,000 pages of toner — and gives out roughly three-quarters of the way through a fourth cartridge, about 6,000 pages into it. Print quality usually confirms the message: repeating marks or a gray background that a fresh cartridge does not cure are the classic signs of a drum at the end of its run. When that day comes, the fix is a DR820 on its own; your toner stock carries on uninterrupted.

We run an HL-L6400DW on one floor and an MFC-L6900DW on another — will the same bundle serve both?

Yes, and that is the quiet advantage of this platform: a single toner and drum design covers the whole workgroup range, so one bundle type can be stocked for several different machines. The TN850 and DR820 pairing serves the HL-L6200DW, HL-L6200DWT, HL-L6250 DN, HL-L6250DW and HL-L6300DW printers, the HL-L6400DW and HL-L6400DWT, and the MFC-L6700DW, MFC-L6750DW, MFC-L6800DW and MFC-L6900DW multifunctions. Before ordering, match the TN850 and DR820 codes against the cartridge and drum codes shown inside your machine's front cover; if those are the codes printed there, this bundle is the right stock for every machine on your floor.

If I order the wrong bundle, how long do I have to put it right?

You have 30 days from delivery to send the bundle back — in any circumstance, whether it was the wrong item, a duplicate order or simply no longer needed — under the terms set out on our shipping and returns page. Past that window, cover on these genuine parts comes from Brother's own manufacturer warranty rather than from us. If anything about the order looks off when it arrives, call our support team Monday to Friday, 9 AM to 5 PM CST, inside that 30-day window and we will get it sorted.

About This TN850 and DR820 Genuine Brother Bundle

This bundle puts three genuine Brother TN850 high-yield toner cartridges — 8,000 pages apiece, 24,000 pages of toner in total — together with a single DR820 drum unit rated at 30,000 pages, for the Brother workgroup range that includes the HL-L6200, HL-L6300 and HL-L6400 printers and the MFC-L6700 through MFC-L6900 multifunctions. It is priced at $523.49 against a $785.24 list price, and it undercuts buying the four genuine parts separately by $58.17. Because the DR820 keeps going after the third cartridge is finished, the drum you fit from this box will still be working when the next TN850 goes in. Orders are dispatched from whichever of our warehouses in IL, PA, GA or CA gets the box to you fastest, and you can browse the full genuine range on our Brother page.