These new batteries are better than traditional lead acid batteries in many ways. They're up to 80% smaller, in most cases almost 10lbs lighter and their service life is almost twice as long as lead acid batteries. Ballistic has an industry leading 3 year warranty. The technology is complete "dry" so you can mount the batteries in any direction and they come with OEM style terminals so they're basically "plug-n-play"!. They're non-toxic, recyclable and better for our planet. Ballistic batteries do not require a trickle-type or any special charger and will loose only 10% of charge of a year of sitting - no more dead batteries! The only negatives we find is that they're slightly more expensive than traditional lead acid batteries and they do not function as well is very cold environments.