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Rectangular black lithium-ion laptop battery with six cells and connector strip

FOCUSTEC

FOCUSTEC PA3817U-1BRS 6-cell 58 Wh laptop battery

SKU CH-ZG1G-P1VTZ

A 6-cell 58 Wh lithium-ion replacement battery compatible with numerous Toshiba Satellite series and part numbers

  • Battery typeLithium-Ion
  • Extended runtime with 58 Wh lithium-ion capacity
  • Direct replacement for PA3817U 3818U 3819U part numbers
  • Fits Toshiba Satellite C655 L755 P755 M645 series
  • New condition ensures full charge cycles from first use
  • Six-cell design delivers 5200 mAh for daily workloads

Direct replacement battery

The FOCUSTEC PA3817U-1BRS is a new 6-cell lithium-ion battery rated at 58 Wh and 5200 mAh. It is built to replace the original PA3817U-1BRS pack in compatible Toshiba Satellite notebooks. Owners of models such as the C655, L755, P755 and related series can restore mobile runtime without modifying the chassis.

Steady discharge profile

Lithium-ion chemistry delivers a consistent voltage curve across the full 58 Wh capacity rather than a sharp drop after a brief burst. The six-cell layout spreads the load so the pack runs cooler during long sessions, helping the battery maintain its rated output from the first minute to the last.

Part-number compatibility limits

This unit matches part numbers PA3817U-1BAS, PA3818U, PA3819U and PA3816U-1BRS. It will not fit laptops that require a different physical footprint or connector pin-out, so buyers with non-listed models must verify the original part number before ordering.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $30.99
Typical for this category: the median of 27,790 items is $30.99.

Specifications

Power
Battery typeLithium-Ion

Questions about this item

Does the 58 Wh lithium-ion pack run hot during all-day use?

The 58 Wh lithium-ion battery is designed for typical laptop thermal envelopes; it does not generate significant heat under normal load.

Must my Toshiba already use a PA3817U-1BRS or PA3818U part number for this to fit?

Yes — it replaces PA3817U-1BRS, PA3817U-1BAS, PA3818U, PA3819U and PA3816U-1BRS packs listed for Satellite L655, L755, P755 and related models.

Will it work in an older Satellite L675D that originally shipped with a 6-cell battery?

The pack fits L675D-S7052, L675D-S7100, L675D-S7104 and L675D-S7106 models that accept the same 6-cell form factor.

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