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Rectangular black lithium-ion laptop battery with label showing 11.4V 43Wh

Audiovox - Generic

Audiovox - Generic PA5242U-1BRS laptop battery 11.4V 43Wh

SKU CH-393Q-A73CM

11.4 V 43 Wh lithium-ion replacement battery for Toshiba Satellite Radius 12 and Portege Z20T series laptops

  • FeaturesRechargeable, 44 watt_hours, Laptop
  • Ready-to-install replacement for Toshiba Portege WT20-B and Z20T series
  • 4V 43Wh lithium-ion cell delivers reliable mobile power
  • 3655mAh capacity supports extended work sessions away from mains
  • CE FCC RoHS certified for electrical safety and environmental compliance
  • Replaces original part numbers PA5242U-1BRS and PA5242U exactly

Replacement Battery for Toshiba Radius 12

This lithium-ion pack delivers 11.4 volts and 43 watt-hours of capacity. It is built as a direct replacement for the original Toshiba part number PA5242U-1BRS. The cell chemistry is rated at 3655 milliampere-hours. It arrives new and carries CE, FCC and RoHS safety certifications.

Drop-In Fit for Listed Portege and Satellite Models

The battery slots into compatible Toshiba Portege WT20-B, Z20T-B and Z20T-C series units as well as Satellite Radius 12 P20W and P25W models. No adapter cables or firmware updates are required for installation. It frees the notebook from mains dependency for mobile work sessions. The physical dimensions match the factory pack so the chassis closes normally.

43 Wh Capacity for Typical Office Workloads

At 43 watt-hours the pack supports several hours of document editing, web browsing and video playback on a full charge. Runtime shortens under sustained heavy loads such as rendering or large compiles. The 3655 mAh rating provides a measurable baseline for comparing remaining health over time. Users needing all-day autonomy away from power outlets should plan for a spare or a USB-C power bank.

Highlights

  • Ready-to-install replacement for Toshiba Portege WT20-B and Z20T series
  • 4V 43Wh lithium-ion cell delivers reliable mobile power
  • 3655mAh capacity supports extended work sessions away from mains
  • CE FCC RoHS certified for electrical safety and environmental compliance
  • Replaces original part numbers PA5242U-1BRS and PA5242U exactly

Specifications

BrandDELL
ModelC21N1613
Part NumberC21N1613
FeaturesRechargeable, 44 watt_hours, Laptop

Questions about this item

How long will the 43Wh capacity last under continuous load?

The 43Wh rating provides a finite energy reserve; actual runtime under sustained use depends on the laptop's power draw and workload intensity.

Does the Li-ion 11.4V pack run hot or draw high power during all-day operation?

Li-ion chemistry at 11.4V generates moderate heat under load; the pack includes CE/FCC/RoHS safety certification for thermal protection.

Which Toshiba models must I already own for this PA5242U-1BRS replacement to fit?

Compatible models include Satellite Radius 12 P20W, P20W-C-10H, P25W-C2300-4K, P25W-C2302, P25W-C2304-4K and Portege WT20-B, Z20T-B series.

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