I dont mean to be rude but i think your wrong unless the website is wrong. i found this on http://www.kinetikpo...om/2009/faq.asp
I qoute "I heard that adding more batteries to my car will lower the voltage and is harder on my alternator, is this true?
Adding multiple Kinetik Power Cells to a vehicle will not add extra load on your alternator or lower you voltage in your car like adding 'wet cell' batteries will. Due to the low ESR and high voltage of Kinetik Power Cells, your voltage will actually increase. Kinetik Power Cells also charge more efficiently and quickly than a standard 'wet cell' battery reducing the stress on your alternator."
Thanks for that. I learned something new today lol. Gotta admit I'm a when it comes to electrical.