After a visit to Batteries Plus I puchased a X2 Power battery, 17.2 lbs, 320CCA, 109.00, I got the posts to convret the batter for auto use as well. It should work good. I am glad everyone chimed in. I would have just gone and bought another big battery.....that would not have been so hybridz of me now would it......I will update this thread as time goes on. I have a 2 year warranty with it as well. Time will tell....