I recently got a rayovac extended battery for my bionic. Issue is that it won't charge all the way over night. The first night it charged to 15% and I had to plug it in that day to keep it alive. The second night I used a new outlet and it only went up to 40%. So luckily I was awake around 4 and checked it and just unplugged it then replugged it in. And then when I wake back up at 6. Its only at 60%. What is happening??