Sennheiser EPOS 460 T Battery Issues

I bought the Sennheiser EPOS 460 T with the expectation of enjoying its long battery life of up to 14 hours. However, I've been disappointed to find that it unexpectedly powers off after only 2-3 hours of use. I sent it to Bircom, the authorized service center, and they promptly provided a replacement. However, I'm disappointed to find that the new product still has the same performance issue. I spent ₺14,004 and now I would like to request a refund.
Dear Mustafa A, We would like to express our regret regarding the negative experience you have had. The Sennheiser Turkey team will contact you via your phone number regarding your complaint as soon as possible. Sennheiser Turkey Team









