Amazon.com: 1000mAh Replacement Battery for Sennheiser PXC 550 II Noise Cancelling Wireless Bluetooth Headphones : Electronics
Review: Sennheiser's PXC 550 Wireless Headphones Should Put Bose on Notice - MacRumors
Sennheiser PXC 550-II Wireless - NoiseGard Adaptive Noise Cancelling, Bluetooth Headphone with Touch Sensitive Control and 30-Hour Battery Life (508337) - Newegg.com
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
AHB413645PCT Battery Replacement for Sennheiser PXC 550 Headphones
Sennheiser PXC 550 Wireless gaming headset audio quality, price, mic, and full specs review - GPUCheck United States / USA