Stinger 80 Amp Battery Relay Isolator

• Ideal for battery isolation
• High Current Relays Are The Most Reliable And Efficient Way To Add Secondary Batteries To Your Syste
• Compatible With All Types Of Alternators And Charging Systems
• Water Resistant Black Phenolic Plastic
• 100,000 Mechanical Cycle Life

Used this on my boat for an aux battery system to run the stereo and lights while anchored. Works as advertised in keeping the primary batteries from dischargewe won't be paddling back again due to dead batts!

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Work good & perfect,

solid pro-looking product

Now i can use my rear battery to my heart contents w/o worrying of starting problem.

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Awesome product here. This thing is strong enough to power both my compressors on my air rid equipped s-10. No more burnt up relays. This thing works great and for the price is a great value.

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Bought this for a 2nd battery in my truck for running a laptop when its not running, works great and was fairly simple to setup.

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I cannot find any information on this anywhere online is this an isolator or is it a relay. And I'm not 100% sure how to install one.