Same for me, but it's already over 3 years old, but it's still weak. i also own the previous model and it still runs perfectly.

I have the same problem. The part does not charge. I have been able to charge it 1-2 times since I got it. Just had it on again all night (about 10 hours), it still has 1 flashing LED. Can someone pick it up here and give me my money back?

Has anyone found a solution?
I've never been able to charge mine - on the mains for almost 24h and still a single LED flashing.

I have the same problem. Have you found a solution?

I have the same model. It takes a few hours to fully charge it. Therefore, it may be that only one LED lights up in the first few hours. I would wait and see if the power supply provides enough current.