S13 alternator problem..help~

hello guys,

i have a 93 s13, stock KA engine
i assume the alternator is dead, but im not sure, so im gonna ask around

i jumped in my car, not enough power to crank the starter, so i boosted the car…after doesn’t charge the battary at all, after i shut it off. must be boosted again…but it idles i can turn on lights n stuff after i boosted…

could there be a power leak, or its obvious its my alternator is only half working?

my bat is a half year old optima, so shouldn’t be a problem.

thx alot