Battery for Sony SRS-X77, Sony SRS-X55 2600mAh from CELLONIC  ...  more

Play music for longer with this CELLONIC® replacement Sony battery - a 100% compatible ST-04 replacement battery for Sony SRS-X77 wireless speakers.

Sony Bluetooth speaker not holding its charge like it used to? Simply change your original Sony SRS-X77 battery – it's a simple, efficient and cost-effective way to bring it back to life. 

This Lithium Ion battery has been specifically designed for use as a Sony ST-04 battery replacement, with 100% compatibility for Sony SRS-X77 batteries and more.

Long battery life: Sony replacement battery ST-04, 2600mAh capacity

✔ Replacement Sony battery – a perfect replacement battery for Sony SRS-X77 Bluetooth speakers
✔ High capacity, long runtime – extended power when you need it and fewer charges thanks to modern Lithium cells without memory effect tech – just like your original battery
✔ 100% compatible replacement for your original Sony ST-04 battery

High-quality, tested cells for Sony speakers

✔ Long-lasting, reliable performance - high-quality cells for up to 1000 charging cycles
✔ Certified safety – CE & ROHS certified, Grade A battery with short-circuit, overheating and overvoltage protection
✔ Thorough, comprehensive testing – each battery cell is tested to ensure all safety requirements are met and that it holds and maintains the correct capacity - all before installation

Replacement ST-04 battery for your Sony SRS-X77 speakers
Brand: CELLONIC® Speaker Replacement Battery
Capacity: 2600mAh
Voltage: 7.4V
Cell Technology: Lithium Ion
Dimensions: 131.20 x 21.30 x 18.60mm
Alternative for / Replaces: Original ST-04 battery 

★ 3-Year Guarantee ★
As an international specialist retailer since 2004, we know what matters when it comes to high-quality replacement wireless Bluetooth speaker batteries. That's why our replacement Sony batteries come with a 36-month guarantee!