2x Battery for Sony MDR-IF245RK; MDR-RF4000; MDR-RF4000K BP-HP550-11 (700mAh, 2.4V) from CELLONIC

(17 reviews)
Article number: 920816

What our customers say

4.8 (17)

Also mentioned: Fast delivery (6)

  • Osmo Finland

    I can't criticise the batteries, I'm just charging them, I'll put them to use then. I can only rate them after a fairly long period of use.
    However, I am very satisfied with your service, fast order processing and prompt replies to my queries when the first shipment did not arrive. You sent the second one, which I have received.

    Verified purchase

  • Dieter Germany

    After using the batteries for the first time, I am very satisfied. The larger capacity is doing very well. I'm curious how long the NiMh battery will last.

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Description

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!
Technical details
Article number: 920816
Weight: 64 g
Length: 46.3 mm
Width: 23.1 mm
Height: 12 mm
Voltage: 2.4V
Technology: NiMH
Capacity: 700mAh
EAN: 4250843483034
Compatibility
Reviews
  • Osmo Finland

    I can't criticise the batteries, I'm just charging them, I'll put them to use then. I can only rate them after a fairly long period of use.
    However, I am very satisfied with your service, fast order processing and prompt replies to my queries when the first shipment did not arrive. You sent the second one, which I have received.

    This review was translated automatically. Source language was
    En voi arvostella akkuja, olen vasta lataamassa niitä, otan ne sitten käyttöön. Arvostella voisi vasta melko pitkän käytön jälkeen.
    Olen kuitenkin todella tyytyväinen toimintaanne, nopea tilauksen käsittely ja pikaiset vastaukset kyselyihini kun ensimmäinen lähetys ei perille tullut. Lähetitte toisen, jonka olen saanut.

    Verified purchase

  • Dieter Germany

    After using the batteries for the first time, I am very satisfied. The larger capacity is doing very well. I'm curious how long the NiMh battery will last.

    This review was translated automatically. Source language was
    Nach dem ersten Einsatz der Batterien bin ich sehr zufrieden Die größere Kapazität macht sich sehr gut. Bin gespannt, welche Lebensdauer der NiMh-Akku haben wird.
  • Maria Germany

    I have saved this supplier. The company rating: fast, clean, good! Price/performance very good

    This review was translated automatically. Source language was
    Habe mir diesen Lieferanten eingespeichert. Die Firmenbewertung: schnell, sauber,gut! Preis/Leistung sehr gut
Product safety

Manufacturer / EU Responsible person

Manufacturer subtel GmbH
Address Mainzer Str. 3, Berlin, 10247, Germany
E-mail info@subtel.co.uk
Safety data sheet download