what kind off battery???

i just bought a gm one wire cs130 alternator
i was thinking of a optima yellow top battery, but what kind ??
and if this helps im running a oasis hp1000 compressor

what size alternator do you have. My buddy had 2 red tops hooked up to an oasis and it almost killed the truck so if i were you if ur alternator does put out that much amps like a 210 or something get 2 yellow tops

low87dawg,

reguardless of the alternator, you need to keep the voltage regulated to no more than 13.8v, optima says that is the max w/o harming their batterys, also you don't want it too low either i'd say less than 11v. the yellow tops are starting/deep cycle which are good to start a vehicle with, and good for lots of accessories such as a compressor or stereo. the red tops are strictly for starting, and cant handle the deep cycling of a compressor or stereo without constant charging, thus wearing them out quicker. there are three yellow tops that i would consider depending on size constraints etc.
if you wire them in parralell it will have 12v, but increase the cca, and reserve time, being able to run your compressor w/o worries.

cca=cold cranking amps, mca=max cranking amps

d75/25 has 650cca / 810mca, and a 98 min. reserve, top post only.
d34/78 has 750cca / 870mca, and a 120 min. reserve, top & side posts.
d31a has 900cca / 1125mca, and 155 min. reserve, top post only, and is a comercial type battery.

example: if you run 2- d34/78's you would have 12v, 1500cca, and @ 240 min reserve.

or you could run a battery separator, and use a red top for starting the ole dawg, and run a yellow top for your compressor, having the best of both worlds, max starting power, and a deep cycle for your accessories.

hope this helps...

hmm well i just got more ideas so im not sure what to get now??