BP-HP550-11 Battery for Sony MDR-RF811RK MDR-RF811R MDR-RF811 MDR-RF855RK MDR-RF855R MDR-RF810RK MDR-RF810R MDR-RF840RK MDR-RF840R Wireless Headphones - 700mAh  ...  more

Whether you’re working, gaming, watching TV or listening to music, this BP-HP550-11 replacement battery will keep you charged for longer - a 100% compatible Sony MDR-RF811RK battery, Sony MDR-RF855RK battery, replacement MDR-RF810R battery & more. 

This CELLONIC® NiMH high-performance, rechargeable Bluetooth headset battery for Sony MDR-RF811RK is the perfect Sony wireless headphone battery replacement, giving you long-term, reliable use – with longer breaks between charges.

Specifically designed for use as a BP-HP550-11 replacement wireless headphone battery, with 100% compatibility for MDR-RF810R, MDR-RF4000K, MDR-RF840R earphones and many other models.

✔ High-capacity, long battery life – High-quality, high 700mAh capacity, long-life headset battery.
✔ Reliable replacement battery – modern, NiMH technology with a reduced memory effect holds its charge over longer periods.
✔ Certified safety and quality – CE & ROHS certified, Grade A BP-HP550-11 battery with short-circuit, overheating and overvoltage protection.
✔ Thorough, comprehensive testing – each battery cell is tested for optimum capacity and to ensure all safety requirements are met – all before installation.
✔ Wide compatibility – replacement battery fits a wide range of Sony wireless headphones - a perfect battery replacement for Sony MDR-RF970R, MDR-IF245RK, MDR-RF4000, MDR-RF810R MDR-RF810RK MDR-RF811 MDR-RF811RK, MDR-RF840R MDR-RF840RK, MDR-RF850R MDR-RF855RK, MDR-RF860 & many more.

CELLONIC® BP-HP550-11 Battery Specifications:
Capacity: 700mAh
Voltage: 2.4V
Cell Technology: NiMH
Model: Sony BP-HP550-11 Battery

★ 3-Year Guarantee ★
CELLONIC® wireless headphone batteries stand for high-quality and certified standards – that’s why they come with a 36-month guarantee!