I have just purchased Logitech G700 and I see that it needs standard AA sized batteries in it. There are some batteries included in the pack for this mouse and they are of different brand which is not available in the stores near my house. The batteries are of Sanyo and I donít find it near my house. I wanted to ask if these batteries are rechargeable or not. I mean, since the manufacturers have given specific batteries, I think they must be the best to use with Logitech G700. Can someone tell me about it?