Well we have just about nailed the Deep Six battery pac down.  We have been testing it and are happy with our findings , the pac has stood up to the rigors of deep sea fishing well. There are 2 models, the standard and the pro . basically the only difference between the two is the receptical cover plate.  The standard has a Leviton duplex cover plate and the Pro has a Hubbell  mono super delux cover.  The Battery box has many uses,  it can be used in emergencies to run radios, pumps, lights, computers, start a car or truck and the list goes on.   They will power 2 Precision Auto reels for multiple days of fishing.