I always slow charge, I bought a Ripmax Extra onboard.

Actually my flying friend Phil just says to me "Charge the tranny and receiver batt at the same time, the tranny always will lose power beofre the receiver so use the tranny as your meter"

His is one of those flyers where NOTHING goes wrong, he comes to the field with one hand in a bicyle and other with fuelled and assembled plane...

And hes used the same tranny for 12 years with no servicing works fine! Where as my SS6 is still busted after repairs (rippoffmax)

So how good are these Ripmax Extras?