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Rectangular black lithium-ion laptop battery with label showing 2800mAh 14.8V

FOCUSTEC

FOCUSTEC PA5185U-1BRS 2800mAh 14.8V laptop battery

SKU CH-P3Y0-S4EC5

Replacement lithium-ion battery with 2800 mAh capacity and 14.8 V output fits Toshiba Satellite C55, C50, L55 and E45 series using part numbers PA5184U-1BRS, PA5185U-1BRS, PA5186U-1BRS or PA5195U-1BRS

  • Battery TypeLithium-Ion
  • Fits Toshiba Satellite C55, C55T, S55, S55T, C50, L55T, L55D, C55-B, E45 series
  • Replaces OEM part numbers PA5184U-1BRS, PA5185U-1BRS, PA5186U-1BRS, PA5195U-1BRS
  • 2800mAh 14.8V lithium-ion capacity for extended runtime
  • Built with Samsung cells for fast charging and long service life
  • New condition battery ready for immediate installation

Compatible replacement for Toshiba Satellite

The FOCUSTEC PA5185U-1BRS is a 2800mAh 14.8V lithium-ion battery built to replace the original pack in Toshiba Satellite C55, C55T, S55, S55T, C50, L55T, L55D and E45 series notebooks. It matches part numbers PA5184U-1BRS, PA5186U-1BRS and PA5195U-1BRS. Buyers who need a different voltage or connector layout should verify their original battery before ordering.

Thermals and runtime

The pack uses Samsung cells rated for fast charging and long cycle life. In typical use the battery delivers more than five hours of operation per charge. No thermal data, fan noise figures or power-draw measurements are supplied by the manufacturer.

Samsung cells and warranty

Samsung cells are specified to support fast charging and extended service life. The unit carries a twelve-month warranty and the supplier offers email support around the clock. No additional software, cables or mounting hardware are included.

Highlights

  • Fits Toshiba Satellite C55, C55T, S55, S55T, C50, L55T, L55D, C55-B, E45 series
  • Replaces OEM part numbers PA5184U-1BRS, PA5185U-1BRS, PA5186U-1BRS, PA5195U-1BRS
  • 2800mAh 14.8V lithium-ion capacity for extended runtime
  • Built with Samsung cells for fast charging and long service life
  • New condition battery ready for immediate installation

Specifications

Battery TypeLithium-Ion

Questions about this item

How do I install the PA5185U-1BRS battery in my Toshiba Satellite C55, and what step is often missed?

Power off the laptop, remove the AC adapter, slide the release latch, swap the old pack for the new 14.8V 2800mAh unit, then press until the latch clicks; the step many miss is fully charging it before first use.

What maintenance or replacement will the PA5185U-1BRS lithium-ion battery need later?

No routine maintenance is required; the Samsung cells degrade over hundreds of cycles, so plan to replace the pack once run-time drops well below the rated 5-plus hours.

What limit appears first on the PA5185U-1BRS during sustained heavy use?

The 2800mAh capacity sets the runtime ceiling; under continuous load the pack will hit its discharge limit and trigger the laptop's low-battery shutdown.

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