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Four black toner cartridges in white and blue branded packaging

eSquareOne

eSquareOne S1-BR-TN850-04 toner cartridge 4-pack black TN850 TN820

SKU CH-AD2Q-420ZG

Four-pack of high-yield black toner cartridges replaces Brother TN850 and TN820, each delivering approximately 8000 pages at 5% coverage

  • Cartridges included4 Pack
  • Ink or toner colorBlack
  • Estimated page yield8000 Pages
  • Print coverage5%
  • VariantTN850
  • Operating humidity range20 to 80% RH
  • High-yield output with 8000 pages per cartridge
  • Four black cartridges reduce replacement frequency
  • Compatible with Brother DCP, HL and MFC series printers
  • ISO 9001 and ISO 14001 certified manufacturing quality
  • Operates reliably from 10 to 32.5 °C

Four-pack black toner replacement for Brother

This set contains four new black toner cartridges engineered to replace Brother TN850 and TN820 originals. It is designed for offices and workgroups that print high volumes on compatible Brother laser printers and want a lower cost per page without changing hardware.

Yield rated at 8000 pages per cartridge at 5%

Each cartridge is rated for approximately 8000 pages when printed at the industry-standard 5% page coverage. Actual output will vary with document density, print mode and environmental conditions such as temperature between 10 and 32.5°C and humidity between 20% and 80% RH during operation.

Replaces OEM Brother TN850 and TN820 cartridges

The pack directly substitutes the original Brother TN850 high-yield and TN820 standard-yield black toners. The upgrade is worthwhile when your print volume justifies the high-yield rating and you want to reduce the frequency of cartridge changes across the supported Brother DCP, HL and MFC series.

How it compares

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

Price $78.99
Pricier than about 71% of the 15,190 comparable items (median $47.99).

Specifications

Product
Brand nameeSquareOne
Model nameS1-BR-TN850-04
Ink or toner colorBlack
Product typeCompatible
Performance
Estimated page yield8000 Pages
Print coverage5%
Compatibility
Replaces brandBrother
Replacement forBrother TN850 TN820
In the box
Cartridges included4 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 4-pack or a single cartridge for my Brother HL-L6200DW?

The 4-pack supplies four black cartridges at 8000 pages each, lowering the cost per page for high-volume printing on the HL-L6200DW.

What does the 8000-page yield mean for daily office use on a Brother MFC-L6900DW?

At 5% coverage each cartridge prints roughly 8000 pages, so a typical office printing 200 pages a day would replace one cartridge about every 40 working days.

Does the cartridge chip work with the Brother DCP-L5650DN firmware?

Yes, the chip is engineered for Brother TN850 and TN820 models and is recognised by the DCP-L5650DN and the other listed printers.

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