I have an ipad1 the battery works great until it reaches with 10 percent battery left. And it comes up with a warning with 10 percent battery left and should charge. The problem is it drops quickly and it doesn't charge. I usually have to reconnect it to my CPU and when the screen comes back up plug it into the wall charger and then it is a slow process back to 100 percent. I have tried changing the cable wall charger plug. Any help would be greatly appreciate it.