Paralell Battery Question

Tross2023

I just got a new to me 2018 TAB 320S
It came w/ a new Interstate battery w/ theses specs

Group HD25-DP, 505 MCA, 64 AH, and 100 RC

I have a line on a second battery, also Interstate for only 79 bucks/new:

It is a: 

Group 24DC Marine/RV, MCA700, CCA 550, and RC140

Can I use them together...can I parallel them, even if one has different specs? 

thanks

Tom 

ckjs

@Tross2023: Those cannot be used in parallel.  To start with, the first presumably is 12 volts while the second is 24.
You can safely place identically spec'd batteries in parallel.

NorthIsUp

@ckjs - I think it's size 24 deep cycle (24DC), as opposed to being anything other than 12v.  It's not advised to mix different battery configurations even though both are 12v. They will not charge or discharge at the same rate and one battery can "fry" while the other is still charging. Alternately, one may finish charging while the other is not fully charged. Those are radically different batteries. Your performance will suffer and both batteries will probably die prematurely. 

Tross2023

By the way, the first one is HD24, not HD 25
does this change your advice?

SLJ

Tross2023 said:

By the way, the first one is HD24, not HD 25
does this change your advice?

No, you should not mix different types of batteries even if they're the same voltage. (not safe). I wouldn't even mix the same type of battery from different manufacturers.