I have an auto battery that I received Oct. 20 that's been working great up to now. It started blinking 15 times a couple days ago, just about the time I was expecting it to so I plugged it in and recharged it. When the light turned green, I removed it from the charger and put it in my case. I went to use it this morning and it won't do anything. My husband and I both tried it but the LED doesn't come on at all and there's absolutely no draw. We tried several carts, but it just won't work. Is there a fix for this?