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Eight black toner cartridges in a rectangular box

eSquareOne

eSquareOne S1-BR-TN850-08 toner cartridge 8-pack black TN850 TN820

SKU CH-MGT2-1K95C

Eight black high-yield cartridges, each printing up to 8000 pages, replace Brother TN850 and TN820 for a wide range of DCP, HL and MFC laser printers

  • Cartridges included8 Pack
  • Ink or toner colorBlack
  • Estimated page yield8000 Pages
  • Print coverage5%
  • VariantTN850
  • Operating humidity range20 to 80% RH
  • 8 black cartridges for high-volume printing
  • 8000 pages per cartridge at 5% coverage
  • Compatible with Brother DCP HL MFC series printers
  • Operates from 10 to 32.5°C and 20 to 80% humidity
  • ISO 9001 and ISO 14001 quality management

Eight-pack compatible toner for Brother printers

This eight-pack contains black toner cartridges that replace Brother TN850 and TN820 originals. It fits a long list of Brother DCP, HL and MFC laser printers used in offices and workgroups. Each cartridge is new and built to match the yield of the OEM high-yield version. Buyers who need colour output or a smaller quantity will not be served by this pack.

Yield measured at five percent coverage

The rated output is 8000 pages per cartridge when printed at five percent page coverage. Real-world yield drops quickly with dense text, graphics or duplex printing. The cartridges operate between 10 and 32.5 degrees Celsius and 20 to 80 percent relative humidity. Storage outside the minus 20 to 40 degree range or beyond the same humidity limits can degrade toner performance.

Straightforward drop-in installation

Cartridges insert directly into the printer without tools; the pack includes installation notes for reference. Common issues arise when the protective seal is not fully removed or when the chip is not recognised after a firmware update. Keeping the printer within the stated temperature and humidity range helps avoid print-quality defects.

How it compares

Measured against everything we stock in Compatible Laser Toner, at today’s prices. Recalculated every night.

Price $167.99
Pricier than about 90% of the 15,190 comparable items (median $47.99).

Specifications

Product
Brand nameeSquareOne
Model nameS1-BR-TN850-08
Ink or toner colorBlack
Product typeCompatible
Performance
Estimated page yield8000 Pages
Print coverage5%
Compatibility
Replaces brandBrother
Replacement forBrother TN850 TN820
In the box
Cartridges included8 Pack
Environment & compliance
Operating humidity range20 to 80% RH
Storage humidity range20 to 80% RH
Operating temperature range10 to 32.5 °C
Storage temperature range-20 to 40 °C
More details
VariantTN850

Questions about this item

Should I buy the 8-pack or individual cartridges for my HL-L6200DW?

The 8-pack supplies eight black TN850-compatible cartridges at once, reducing reorder frequency for high-volume printing on models such as the HL-L6200DW.

What does the 8000-page yield mean for daily office use?

Each cartridge prints roughly 8000 pages at 5% coverage, so a typical office printing 200 pages a day would replace one cartridge about every six weeks.

Does the cartridge use a chip that works with Brother firmware updates?

The compatible cartridges are engineered to match Brother TN850 and TN820 specifications, allowing them to function with the listed DCP, HL and MFC series printers.

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