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Rectangular lithium polymer laptop battery, dark finish, 126 by 70 by 20 mm, 457 grams

NShi

NShi 4400mAh 10.8V Li-ion battery for Portege M700 M750 M780

SKU CH-E2YD-AA7KB

A 4400 mAh 10.8 V lithium-polymer replacement battery for Portege M700, M750 and M780 tablets, certified to ISO 9001, RoHS, CE and UN 38.3

  • Battery TypeLithium Polymer
  • 4400 mAh capacity delivers extended runtime for Portege M700 M750 M780
  • 8 V lithium-polymer chemistry matches original voltage and cell type
  • Certified to ISO 9001 RoHS CE UN 38.3 and MSDS for safety assurance
  • Slim 20.2 mm profile and 457 g weight fit the original battery bay precisely
  • Replaces PA3128U-1BRS PA3191U series part numbers for direct compatibility

Compatible Portege M700 M750 M780 replacement

This NShi lithium-polymer battery replaces original Toshiba part numbers PA3128U-1BRS and the PA3191U series for Portege M700-S7043V, M780-S7234 and M750-S7242 tablets. It delivers 4400mAh capacity at 10.8V for 47.52Wh total energy. The pack measures 126.45 x 69.67 x 20.2mm and weighs 457.0g.

Sustained discharge at rated voltage

Rated at 10.8V and 4400mAh, the cell chemistry maintains stable output through a full work session rather than peaking briefly. ISO9001, RoHS, CE, UN38.3 and MSDS certifications confirm consistent manufacturing tolerances that limit voltage sag under continuous load. The 47.52Wh rating reflects usable energy across the discharge curve.

Direct fit with original screw holes

The battery matches the factory footprint and connector orientation for the listed Portege models, so installation requires no adapter cables or case modification. Verifying the exact part number on the old pack against the PA3128U-1BRS or PA3191U variants prevents ordering the wrong revision. A mismatch in part number is the most common reason a physically similar pack will not latch or charge.

Highlights

  • 4400 mAh capacity delivers extended runtime for Portege M700 M750 M780
  • 8 V lithium-polymer chemistry matches original voltage and cell type
  • Certified to ISO 9001 RoHS CE UN 38.3 and MSDS for safety assurance
  • Slim 20.2 mm profile and 457 g weight fit the original battery bay precisely
  • Replaces PA3128U-1BRS PA3191U series part numbers for direct compatibility

Specifications

Battery TypeLithium Polymer

Questions about this item

Does the 4400mAh 10.8V pack run hot or drain quickly when the Portege M780 is used all day?

The 47.52Wh lithium-polymer cell matches the original specification, so heat and runtime stay comparable to the factory battery under normal workloads.

Must I already own a specific Portege model or original part number for this battery to fit?

It replaces PA3128U-1BRS and every PA3191U variant listed, fitting Portege M700-S7043V, M750-S7242 and M780-S7234 without extra parts.

Will the 126.45 x 69.67 x 20.2mm case align with the latch and connector on my older Portege M700 tablet?

Yes — the dimensions and connector match the OEM design used across the M700, M750 and M780 series, so the battery seats and locks exactly like the original.

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