Lead acid batteries have a knack for dropping their juice when left alone. Storing a sportbike for the cold season, a long absence away from home or any other prolonged period that keeps your thumb away from the starter calls for an effective battery assistant. Compact, proven and proofed from the elements, Battery Tender’s Waterproof 800 will do more than save you from forking over cash for a new power box each season. An embedded microprocessor within the unit manages and monitors multiple charging modes so that your bike’s battery reaches full charge safely before a lesser mode takes over to maintain optimal current. A simplistic trickle charger on the other hand releases a constant stream of electricity that can prematurely shorten battery life through overcharging. Equipped with 800 milliamps of smart power, a full charge indicator and a protected core makes the Waterproof 800 an obvious choice for keeping your bike’s ticker turning over.