I was tired of the super heavy sixty something pound Interstate in my old Police car and was thinking of relocating to trunk when someone here recommended a lithium battery. I researched quite a bit and ended up buying one and it's been over two years and problem free. It weighs 11 pounds and has more cranking power than the huge Interstate and the charger that came with it is not much bigger than a cell phone so I can carry it in the trunk. Mine is Braille brand.