ProMariner Battery Isolator - 2 Alternator - 2 Battery - 70 AMP [12072] Marine Navigation & Instruments | Gauges Polished stainless steel top with

Polished stainless steel top with black polymer base

SkyLock 400

The external battery pack extends OPSIN’s operation time to a full eight hours while providing helmet counterweight for comfort during a long deployment

Length:36"

You can use a pulley or block at the bow eye to double your pulling power You can get more strength out of your trailer winch

ProMariner Battery Isolator - 2 Alternator - 2 Battery - 70 AMP [12072] Marine Navigation & Instruments | Gauges Polished stainless steel top withBattery Isolator 2 Alternator 2 Battery 70 AMP ProMariner Battery Isolators with gold plated terminals and improved efficiency, provide enhanced charging. Rated for use with DC devices ranging from 10 amps to 70 amps. Owner's Manual (pdf)