Bought the A2 Lite mouse to use in combination with my X8-H Plus and for the first couple weeks it worked well. I was pleased with its battery performance, the rechargeable batteries seemed to last over 1 week. However, in the last few weeks, the same batteries are only lasting 2-3 days with similar use. The X8-H plus box is running the latest 004a firmware. Any suggestions how I can fix this significantly poor batter life?