I wonder if an app could be created to stop that trickle charge to 100% feature and change it to, something like, "Off until battery discharges to XX%"?
I don't think so; at least Android doesn't seem to expose the required functionality:
btw, this is something that (good) laptops allow you to configure; e.g. my Thinkpad
is set to "only start charging when below 50%, and only charge up to 70%"
Thanks for the info.