I verified last night that the internal "4.2/4.35/3.7" slide switch functions as expected by changing the termination point of a charge. I don't have any 4.35v cells but I have some 4.30v (Samsung ICR18650-28A and LG LGABC21865) that I watched and pulled at 4.3v. The latter took about 150mAh additional charge current above where they were at 4.2v. I also used the 3.7v setting to take several cells to storage voltage. One quirk is that any battery above about 4.15v or so will be detected as "Full" when inserted and you have to take it down to about 4.09v or so before it will start charging (but it will terminate at 4.35 instead of 4.2v).