What Battery Threshold should I use for my batteries?

[red bioroid]

I just got my extended battery for my X40.

I read that I can increase the lifespan of my extended battery threshold if I change the threshold %.

"Start Charging when battery goes below a certain % "

Have anyone use this feature with success?

My regular battery already has 92 cycle counts (over 20 months)and new extended battery has just 1 count. I plan on using my extented battery , to the point of it fully discharge each time, about 6-10 times per month.