Alright just a bit of background before I ask my questions: I'm no electrical expert but I did pay attention in my science classes. I currently run a Die Hard Platinum Marine PM-2 battery in place of my stock battery that 'mysteriously' died on me at 25k miles (long story). I liked this one because I knew I would be adding a lot of extra power sucking devices and this particular battery had 4 terminals. I now will be adding a lot of extra lighting (3 hellas on an avid off-road light bar and 2 whelen landing lights behind the grill) which will majorly suck battery life when all in use. To add to that, I already upgraded my stock stereo and added bed speakers and run my CB almost all the time when Iím in my truck. I'd also at some point like to add a viair on board air compressor too, so I'm thinking with all this, I should probably run dual batteries. Now for the questions. What I would like to do (not sure if this is the best way to go about this, please feel free to drop your two cents! ) is run a Die Hard Platinum Automotive P-1 in a parallel circuit. I thought the P-1 would be best because it had identical specs as far as reserve capacity and cold cranking amps. Am i correct in that the batteries have to have the same specs, or do they not?, or do they literally have to be the exact same battery? Next question, if I run my set-up this way, will I have to upgrade my alternator as well? Sorry for the mini novel, but thanks for taking the time to read and reply!
And just a disclaimer so I can avoid hate posts...i will NOT be one of those obnoxious drivers who blinds on-coming vehicles, I just like a lot of light when off-roading, or making new roads to find new places to camp etc.