Megaware BatteryGuard [40131] KVD-72 an external GPS receiver such

an external GPS receiver such as the Simrad GS25 may be required

has an ultra-compact size for easy installation

Solid machined brass construction holds up to lead

Anti-Reverse Feature: Instant Anti-Reverse

For Use With: In-Line

Megaware BatteryGuard [40131] KVD-72 an external GPS receiver suchBatteryGuard Prolong the lifeof your battery. Maximize your battery's performace. Excessive shock and vibration are two of the leading causes for battery failure. Megaware BatteryGuard sits under your battery and absorbs the gravity shock caused by excessive vibration and up and down bounce. Features: Reduces up to 80% of the G shock caused by excessive shock and vibration Protect against premature battery failure Fits up to Group 31 batteries Fits