2x BP-HP550-11 Battery for Sony MDR-RF811RK, MDR-RF855RK, MDR-RF810R, MDR-RF811R 700mAh Headphone / Headset Battery Replacement  ...  more

Whether you’re working, gaming or listening to music, this replacement Sony MDR-RF811RK battery for Sony headphones will keep you online and charged for longer.

This CELLONIC NiMH high-performance, rechargeable Bluetooth headset battery 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 gaming headset / call centre headset battery, with 100% compatibility for MDR-RF811RK earphones and more.

Long runtime, full compatibility: Sony MDR-RF811RK battery with 700mAh high capacity

✔ 100% compatible replacement – Replaces your original Sony BP-HP550-11 battery
✔ Long battery life, high capacity – 2.4V high conductivity headphone battery, 700mAh high capacity
✔ No capacity loss – thanks to modern NiMH technology with a reduced memory effect technology
✔ Fewer charging breaks – less time spent waiting for your headphones to charge 

Proven quality, certified safety: Sony BP-HP550-11 replacement batteries for up to 1000 charging cycles

✔ Long-lasting, consistent performance – high-quality NiMH cells for up to 1000 charging cycles
✔ Certified safety – CE & ROHS certified, Grade A battery with short-circuit, overheating and overvoltage protection
✔ Suitable for – sub-zero and high temperatures - particularly weather and temperature resistant
✔ 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 BP-HP550-11 battery for your Sony MDR-RF811RK earphones
Brand: CELLONIC Headset Replacement Battery
Capacity: 700mAh
Voltage: 2.4V
Cell Technology: NiMH
Alternative for / Replaces: Original BP-HP550-11 battery 

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