(ET) et question on mowing distance

[Oasis654 aol com]

hi folks, i try to mow some paths that are at the outer reaches of how far 
my 
e8 or e10 can go, and still make it back to the nearest electrical source. 
 
so i've been wondering about any distance extending tricks you folks might 
have picked up.  
     for instance, resting the et about half way thru would let the 
batteries 
self regenerate a little, right?  also, which gears to use under different 
conditions. 
    a related question has to do with longevity of batteries.  will 
batteries 
last longer with fewer charge/discharge cycles over the years of battery 
life?  if yes, there must be some minumum number of cycles that would be 
best?  
    thanks for your help, jon k albany, ny