Fishing pros, serious mariners and recreational boaters all know that a bad battery can spoil a great day, so they trust Trojan Marine® products to deliver more hours of fun on the water. Trojan Marine® dual purpose batteries are designed to deliver maximum durability, reliability and performance in all your starting and deep cycle applications. Handles enable easy lifting in tight spaces. Dual marine terminals allow you to hook up all your electronic gear. Large vent caps on deep cycle models reduce the potential for acid leakage.