How to Replace the Battery on the Sony Noise Cancelling Headphones - MDR-ZX110NC - YouTube
Sony MDR-XB950B1 & MDR-XB950BT Teardown Battery Replacement/Repair - YouTube
ABLEGRID AC DC Adapter For Sony MDR-RF811 MDR-RF811RK MDRRF811RK Rechargeable Headband Wireless Stereo Headphone System Power Supply Cord Cable Battery Charger Mains PSU - Newegg.com
Sony MDR-RF811RK Battery BP-HP550
Sony BO-SONY-BP-HP550 battery (550 mAh 2.4 V, Original) - BatteryUpgrade
Sony MDR-RF811RK - Wireless Stereo Headphone System Manual | ManualsLib
CELLONIC® Battery Replacement for Sony MDR-RF811RK, MDR-RF855RK, MDR-RF810R, MDR-RF811R Wireless Bluetooth Headphones Headsets 700mAh BP-HP550-11 Spare Accu Pack: Amazon.co.uk: Electronics & Photo
Amazon.com: Genuine Sony Rechargeable Battery BP-HP550-11 for Sony MDR-RF970RK, RF970R, RF925RK, RF925R, RF912RK, RF4000K, IF245RK, RF860RK, RF855RK, RF850RK, RF840RK, RF811RK, RF810RK Headphones : Electronics
User manual Sony MDR-RF810RK (English - 2 pages)
Amazon.com: Rechargeable Headphone Battery BP-HP550-11 for Sony MDR-RF4000K MDR-RF810RK MDR-RF811RK MDR-RF840RK MDR-RF855R MDR-RF855RK MDR-RF810R MDR-RF912RK 175674722 : Electronics
2-Pack 700mAh Battery for Sony MDR Series Wireless Stereo Headphone Systems | eBay
New Rechargeable Battery 550mah 2.4v For Sony Mdr-rf810rk Mdr-rf810r Headphones Battery Bp-hp550-11 - Rechargeable Batteries - AliExpress
Обзор от покупателя на Беспроводные наушники Sony MDR-RF811RK — интернет-магазин ОНЛАЙН ТРЕЙД.РУ
Replacement for Sony MDR-RF810RK Battery - Compatible with Sony BP-HP550-11 Headphone Battery (700mAh 2.4V NI-MH) : Electronics - Amazon.com
Wireless helmet battery for SONY MDR RF811RK| | - AliExpress
Amazon.com: Rechargeable Headphone Battery BP-HP550-11 for Sony MDR-RF4000K MDR-RF810RK MDR-RF811RK MDR-RF840RK MDR-RF855R MDR-RF855RK MDR-RF810R MDR-RF912RK 175674722 : Electronics
Amazon.com: HQRP 2-Pack Battery Compatible with Sony BP-HP550-11 MDR-RF925 MDR-RF925R MDR-RF925RK MDR-RF970 MDR-RF970RK MDR-RF811 MDR-RF811RK Wireless Stereo Headphone System : Electronics
Amazon.com: XSPLENDOR Replacement Battery for Sony MDR-IF245RK MDR-RF4000 MDR-RF4000K MDR-RF810 MDR-RF810RK MDR-RF840 MDR-RF840RK MDR-RF850 MDR-RF850RK MDR-RF860 MDR-RF860RK MDR-RF925 Part NO BP-HP550-11 : Electronics
Amazon.com: Replacement Battery for Sony MDR-RF860, MDR-RF4000, MDR-RF970, MDR-RF970RK, MDR-RF925 : Electronics
Amazon.com: Rechargeable Headphone Battery BP-HP550-11 for Sony MDR-RF4000K MDR-RF810RK MDR-RF811RK MDR-RF840RK MDR-RF855R MDR-RF855RK MDR-RF810R MDR-RF912RK 175674722 : Electronics