Z55h Battery

Updated August 15, 2026

Overview

Product sourcing insights & recommendations

29 来源

The Z55H battery is a high-energy-density 3.85V lithium-ion coin cell specifically engineered for premium TWS (True Wireless Stereo) earbuds, most notably as the OEM battery for the Sony WF-1000XM4. Manufactured primarily by ZeniPower (Zhuhai Zhi Hai ZeniPower Battery Co., Ltd.), it is the core solution for resolving widespread "battery drain" issues in high-end headsets. Amazon Centralsound

Technical Profile & Product Context

* Key Specs: Nominal voltage of 3.85V and a capacity ranging from 70mAh to 75mAh (0.29Wh). Its dimensions are 12mm x 5.4mm. Aliexpress Centralsound

* Compatibility: While standard in the Sony WF-1000XM4, it is also a popular high-capacity upgrade for the Sony WF-1000XM3, WF-SP900, and SP700N models. Shopee

* Comparison (Z55H vs CP1254): The Z55H is often sought as a more powerful replacement for the Varta CP1254. It offers a higher nominal voltage (3.85V vs. 3.7V) and higher energy density, providing longer playback time in compatible devices. Magconn Shopee

Market Trends & Insights

* Growing Repair Demand: As flagship TWS earbuds from the 2021-2023 era reach the end of their battery life cycles, there is a surging "Right to Repair" market for individual Z55H cells. Retail prices for single units typically range from $10 to $15, while wholesale procurement offers significant margins. Ebay Amazon

* Supply Chain Dominance: ZeniPower has solidified its position as a critical OEM supplier, rivaling Varta in the micro-lithium sector. The market is trending toward higher voltage (3.85V+) cells to support advanced features like ANC (Active Noise Canceling) and LDAC high-res audio without increasing battery size. Evemall Centralsound

* Projected Growth: The global micro-battery market is expected to grow at a CAGR of ~10% through 2026, driven by the replacement cycle of premium wearables and the push for smaller, more energy-efficient components. Fortunebusinessinsights Gray

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Sources & References

29 sources cited · Verified industry data & reports

2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony ...

Amazon.com

100% Compatible with original battery. · Battery Voltage:3.85V Battery Capacity:70mAh， For battery part number:Z55H CP1254 · Actual measured dimensions (mm): D5.5 ...

(2) ZeniPower Z55H Battery li-Ion 3.85V 0.29Wh Sony WF- ...

CentralSound

(2) ZeniPower Z55H Battery li-Ion 3.85V 0.29Wh Sony WF-1000XM4 Ear Buds · Includes 2 batteries. · 3.85V · 12mm diameter · All orders ship directly from us ...

Has anybody successfully replaced the battery on their WF ...

Reddit · r/SonyHeadphones

I'm asking because the battery used is the Zenipower Z55H and its virtually nowhere to be found online. The battery is rated at 3.85V and the only close ...

ZeniPower Z55H 70mAh 3.85V Li-Ion Battery For Sony ...

eBay

ZeniPower Z55H 70mAh 3.85V Li-Ion Battery For Sony Headphones. 5.08 product ratings. lightinggeek (4418). 100% positive feedback. $11.20. Free shipping.

Original ZeniPower Z55H 3.85V Li-ion Battery for Sony WF- ...

AliExpress

Brand: ZeniPower Model:Z55H Voltage: 3.85V High Voltage Capacity/Power:0.29Wh Size: 12*5.4mm approx (Please Double Confirm Your Original Battery Size Before ...

ZeniPower Z55H batteries for WF-1000XM3 earphones?

Reddit · r/sony

I accidentally bought the Z55H batteries intended for WF-1000XM4 instead of Z55 batteries. Can I still use them in my WF-1000XM3? Edit: I did it eventually. ...

Z55h Battery

Overview

Technical Profile & Product Context

Market Trends & Insights

Z55h Battery 3.85v 70mah 75mah For Sony Wf 1000xm4

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Sources & References