Battery drain so quickly
Hi! I have a Bigme b751c e reader for about 4-5 months. In the beginning, the battery lasted WEEKS. However I would go through periods of not charging nor using it. Now that I’ve started to use it more, I noticed that the battery drains insanely fast. I’m talking 30-50% in a few hours of wifi online reading (color). Is this normal? Is there a way to troubleshoot? I might have already thrown my manufacturer warranty papers away—who should I contact?
I’ve heard that the battery cannot be replaced on this device. Is this true? If it isn’t, how much would the cost be?