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Rectangular black lithium-ion laptop battery with connector pins

NShi

NShi VJ8BPS57 laptop battery 11.4V 40Wh 3520mAh for Sony VAIO S15 2019

SKU CH-HJCQ-QVVJH

Replacement lithium-ion battery delivering 11.4 V and 40 Wh for Sony VAIO S15 2019 models

  • Battery TypeLithium Polymer
  • Grade A cells reduce leakage risk and stabilise output
  • Built-in circuit protection guards against overcharge and short circuits
  • 4 V 40 Wh capacity restores full runtime for VAIO S15 2019
  • Direct replacement for part numbers VJ8BPS57 31CP5/57/80
  • Brand-new lithium-ion pack supplied at 100 % manufacturer condition

Replacement Battery for Sony VAIO S15 2019

This NShi VJ8BPS57 battery replaces the original pack in Sony VAIO S15 2019 laptops. It delivers 11.4V and 40Wh capacity using Grade A lithium-ion cells. The unit is 100% new from the manufacturer and coloured black.

Installation and Common Issues

Installation requires opening the laptop back case to access the battery compartment. Verify the original battery part number matches VJ8BPS57 or 31CP5/57/80 before fitting. Built-in circuit protection guards against overcharge and short circuits, reducing leakage risk.

Who This Suits and Who Should Look Elsewhere

Suits owners of a Sony VAIO S15 2019 needing a direct voltage and capacity match. Not suitable for other VAIO models or laptop brands. Buyers who cannot confirm the part number on their existing battery should look elsewhere.

Highlights

  • Grade A cells reduce leakage risk and stabilise output
  • Built-in circuit protection guards against overcharge and short circuits
  • 4 V 40 Wh capacity restores full runtime for VAIO S15 2019
  • Direct replacement for part numbers VJ8BPS57 31CP5/57/80
  • Brand-new lithium-ion pack supplied at 100 % manufacturer condition

Specifications

Battery TypeLithium Polymer

Questions about this item

How can I confirm the battery is working after installation?

After fitting the VJ8BPS57 pack, power on the Sony VAIO S15 2019 and check that the OS reports 11.4 V and a full charge near 40 Wh or 3520 mAh.

What comes in the box and what must I source separately?

The package contains the 100 % new Li-ion battery with Grade A cells and built-in circuit protection; no tools, screws or AC adapter are included.

Which part number should I match to be sure I have the right version?

Open the laptop back case and verify the original battery reads VJ8BPS57 or 31CP5/57/80 before ordering this replacement.

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