The advantages of Sinopoly’s Lithium Battery Packs for marine applications are great. The lithium batteries are built to last for a longer period of time and engineered to be extremely safe. Furthermore, they offer high discharge rates, don’t require active maintenance, are lightweight and are fully charged in no-time. They bring you maximum comfort and safety. You will navigate through the waters in silence. Complete freedom with no noise, no vibrations, no exhaust fumes.