Picopix Max charging issue

I received my Picopix Max in early January and used it for a few times in my office until late January when I had to work from home. Recently I was back to my office and I found that my projector cannot be fully charged (stuck at 64% charged). As a result it never has enough power for me to use it for a one-hour presentation. Anyone encountered the same issue?

A post was merged into an existing topic: Battery percentage sticks to 76% after charging whole night