700mah 3.7v New Battery For Sennheiser Pxc 550 Bluetooth Headset Li-polymer Rechargeable Replacement Ahb413645pct Track Code - Digital Batteries - AliExpress
100% New 700mah Ahb413645pct Battery Wireless Bluetooth Headset For Sennheiser Pxc 550 Battery Ahb413645pct - Digital Batteries - AliExpress
AHB413645PCT Battery Replacement for Sennheiser PXC 550 Headphones
I recently bought PXC 550 ii, this is the second time I charge it, it's been more than three hours already and the third led is still blinking (internet says full charge
New Battery for Sennheiser PXC 550 Headset Li Po Polymer Rechargeable Pack Replacement 3.7V 700mAh AHB413645PCT 3 Lines+Plug|Digital Batteries| - AliExpress