Quote Originally Posted by jaypee10 View Post
baka un lang ang talaga ang output voltages ng alternator mo.
as an aficionado once said,
based on ordinary shop instruments, the voltages measured are +/- 10%. so, that measured 13.5 V may actually be in reality, anywhere from 12.15 V to up to 14.8 V.

a large charging voltage can result in excessive bubbling and loss of battery fluid, in the long run. this is probably why the maximum voltage is regulated to 13.5 V only.