hey im gonna be buying a red top but i see they got a bunch of numbers or group number there are like 34 .... 34/78 ....35 ....75/25 , these numbers are latin to me can you help me out thanks

 

34/78 first length/width wise, but you'll need a little spacer for the stock tie down.

 

Are you using this as a dedicated battery for the audio system? If not, and you are using it to crank the engine as well, I would go with a yellow or blue top. Best of both worlds.

 

blue top , isnt that designed for marine...i want something with good starting power, cause i got a pretty decent stereo setup ...hid ballasts and all that stuff

 

I've used a Yellow top in -40 degree weather...cranks the engine fine

 

I guess with the yellow top, they handle discharges and recharges very well with audio system drains.

 

Indeed.

They keep above 11V for almost their entire discharge, and since they're deep cycle, they'll take a complete discharge many times before biting the dust.

As your daughter found out once...stereo + car off = dead battery

This isn't as bad w/ the yellow top

 

Oh yeah....lasted about 1/2 hour running everything and dead. Now, with the yellow top, she has ran everything for almost 2 hours and still started her car. Huge difference.

 

hmm so the yellow top is the better one then?? wats special about the blue one??

 

By that graph doesnt that mean red top is better?

 

Graph is for cold cranking amps, which yes...if you do need additional cranking amps, you might want a red top.

But the yellow top is made to handle being totally discharged and recharged again better...better for an audio system and just as good as a stock battery for starting.

If you need additional starting power over stock, Red, if you just want an upgrade because of your stereo, Yellow.