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  1. #1

    Lightbulb is this battery isolator worth the money?

    I hope this is the right forum......

    I'm looking to build a dual battery system for my truck and I've been researching battery isolators and I found these: in power battery isolators.

    is this a good idea to buy? It seems like it might be more reliable because their solid state....

    - - - Updated - - -

    some more info...

  2. #2


    Solenoids are the least reliable form of isolator but also tend to be the cheapest ... and are usually reliable enough for stereo applications. Diode-based isolators are a little more expensive and are highly reliable ... but they entail voltage drop due to the use of the diode ... which affects your ouput. MOSFET-based isolators are spendy but are ultra-reliable and have negligible voltage drop. By 'solid state' I'm assuming that isolator is MOSFET-based.

    Choose your approach based on budget and application requirements; there's no lone right/correct answer. You might ask them what they're using for the isolation before buying...

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