UltraBay FX Battery

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UltraBay FX Battery (02K6513)

This is a battery pack that slides into an UltraBay FX, or fits into the dedicated battery slot.


  • Battery specification: 4Ah or 4.8Ah, 9.6V or 10.8V, 38.4Wh or 51.84Wh
  • Battery cell count: Nine, 3.6V lithium-ion cylindrical cell or eight 1.2V nickel-metal hydride cylindrical cells
  • Battery run time: up to 3 hours
  • Battery charge time: up to 6 hours, 3 hours if the machine is switched off
  • Weight: 450 grams or 0.99 pounds

Part numbers

Panasonic - Lithium-Ion, 10.8V 4.8Ah (51.84Wh)

  • 02K6520 (02K6535), 11J8923 (02K6535)

Panasonic - Nickel-Metal Hydride, 9.6V 4Ah (38.4Wh)

  • 02K6521 (02K6534)

Toshiba - Nickel-Metal Hydride, 9.6V 4Ah (38.4Wh)

  • 02K6537 (02K6536)

Usage and Linux support

See How to use UltraBay batteries.

Models supporting this accessory