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Black rectangular lithium-ion laptop battery with six cells

FOCUSTEC

FOCUSTEC PA3817U-1BRS laptop battery 10.8V 48Wh 6 cells

SKU CH-69GS-KG4TG

Lithium-ion 10.8 V 48 Wh 6-cell replacement battery compatible with numerous Toshiba Satellite models

  • Battery TypeLithium-Ion
  • Li-ion chemistry gives stable voltage and long cycle life
  • 8V 48Wh capacity supports extended unplugged use
  • Six-cell layout balances runtime with slim fit
  • Replaces PA3816U PA3818U PA3819U and PABAS227-230 part numbers
  • Fits Toshiba Satellite L655 L675 L745 L755 P745 P755 M645 series

FOCUSTEC 48Wh 10.8V replacement battery

This new lithium-ion pack delivers 48 watt-hours at 10.8 volts across six cells. It is built for owners of compatible Toshiba Satellite laptops who need a direct replacement for a worn or failed original battery. The black casing matches the factory colour scheme. One battery is included in the package.

Replaces PA3816 PA3818 PA3819

The unit covers a wide range of Satellite series including 645, 655, 675, 745, 750, 755, 770 and 775 models as well as C655, C675, L730, L735 and L740 families. It is the correct upgrade when the original pack no longer holds a useful charge or shows swelling. Buyers whose laptops use a different voltage or connector will not be served by this part.

Limited to 10.8V six-cell lithium-ion form factor

The battery operates only at the rated 10.8 volts and fits the specific bay design used by the listed Satellite chassis. It cannot power systems that require a higher cell count, a different voltage or an alternate physical layout. Runtime scales with the 48Wh capacity and the host notebook's power draw.

Highlights

  • Li-ion chemistry gives stable voltage and long cycle life
  • 8V 48Wh capacity supports extended unplugged use
  • Six-cell layout balances runtime with slim fit
  • Replaces PA3816U PA3818U PA3819U and PABAS227-230 part numbers
  • Fits Toshiba Satellite L655 L675 L745 L755 P745 P755 M645 series

Specifications

Battery TypeLithium-Ion

Questions about this item

Will this PA3817U-1BRS battery fit the battery compartment of my Toshiba Satellite L755-S5153?

Yes, the L755-S5153 is listed among the compatible models for this 10.8V 6-cell pack, so it matches the original form factor and latch positions.

What is the correct way to install this battery, and which step do people often miss?

Power off the laptop, unplug the AC adapter, slide the old pack out, insert the new PA3817U-1BRS until both latches click, then charge it fully before first use — skipping the full initial charge is the common mistake.

How long will this 48Wh lithium-ion battery last before it needs replacing?

Runtime gradually decreases over time; plan to replace the pack when it no longer holds enough charge for your daily workload, typically after several hundred charge cycles.

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