After Reading many post about the TDI SL The Topics always Returned to the Issue about Batteries so I thought I would Buy A  Few Dozen Batteries and put it to the Tests Because I think that most people are Holding Back or putting off buying a really Good Machine based on the Issue of the Batteries, So I am posting this in order to let people see that The problem is easily solved and is A lot Cheaper than you might think,  HH   I have done Tests with Batteries here's what I Got, 1) T