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Small rectangular silver battery labelled Z55H with tiny screwdriver and pry tools beside it

PISKEKAT

PISKEKAT Z55H 3.85V 70mAh laptop battery for Sony WF-1000XM4 with tools

SKU CH-MAM5-GVEHT

A 3.85 V, 70 mAh replacement cell for Sony WF-1000XM4 earbuds, supplied with fitting tools

  • Battery TypeLaptop Batteries
  • Direct replacement for original Z55H battery
  • 85 V and 70 mAh match factory specs
  • Designed specifically for Sony WF-1000XM4 headset
  • Includes installation tools for easy fitting
  • New condition with 12-month warranty coverage

Direct Replacement for WF-1000XM4

This PISKEKAT Z55H battery matches the original 3.85V 70mAh specification for the Sony WF-1000XM4 headset. It is built for owners who need a like-for-like cell to restore factory runtime. The pack includes the installation tools required to open the earbud and swap the cell. Buyers who want a higher-capacity upgrade will not find that option here.

70mAh Capacity and 3.85V Output

The cell delivers 70mAh at 3.85V, matching the OEM energy rating for the WF-1000XM4. This capacity supports the standard listening time the headset was designed for. It will not extend playtime beyond the original specification. Users who need longer sessions between charges cannot achieve that with this replacement.

Tool Kit Included for Earbud Access

The package supplies the small drivers and pry tools needed to open the tightly sealed earbud housing. This lets a careful owner perform the swap without sourcing separate instruments. The compact form factor leaves no room for screws; adhesive and clips hold the shell together. Anyone uncomfortable with delicate disassembly should seek professional fitting.

Highlights

  • Direct replacement for original Z55H battery
  • 85 V and 70 mAh match factory specs
  • Designed specifically for Sony WF-1000XM4 headset
  • Includes installation tools for easy fitting
  • New condition with 12-month warranty coverage

Specifications

Battery TypeLaptop Batteries

Questions about this item

Will the 3.85 V 70 mAh cell work with the original charging case electronics?

The cell matches the original Z55H part at 3.85 V and 70 mAh, so the case charging circuit recognises it normally.

How can I verify the replacement is functioning correctly after fitting?

After reassembly place the earbuds in the case; the status LED should show charging and each bud should reach full charge within the usual cycle.

Does the package include the tiny screwdrivers and pry tools needed to open the case?

Yes, the kit ships with the Z55H battery and a complete installation tool set for the WF-1000XM4 case.

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