Reddit reviews ZMYGOLON 300A Battery Power Disconnect Battery Switch Rotary Isolator Kill ON Off Switch for Car Van Truck Boat
We found 2 Reddit comments about ZMYGOLON 300A Battery Power Disconnect Battery Switch Rotary Isolator Kill ON Off Switch for Car Van Truck Boat. Here are the top ones, ranked by their Reddit score.
Rated current: 100A, Instantaneous current:300A, Operating Voltage:12-24vContact resistance: 50M,Insulation resistance: 100MDielectric strength: 1500VAC / 1minSide terminal battery bolt Electrical life: 10000Easy operation:disconnect and reconnect battery by one simple turn of the knob on it
I don't think i see your logic regarding your alternator's charging capabilities.
So here is a quick mental check: A 40 Amp DC-DC charger or a 40A isolator will pull 40 Amps regardless if your alternator was a 1000 Amp alternator. Alternators have the ability to change their output capabilities depending on the load. A 150 Amp alternator isn't looking to dump 150 amps all the time, think about your starter battery: if you were constantly dumping 100 amps into that battery you would damage it.
Other than that your parts look good!
A couple pointers... With the Renogy controller the remote meter is pretty much a must on most models, the MT-50 i think is the name. Also how are you mounting the panels? Renogy's Z-brackets are a great solution.
Finally i would strongly recommend (3) heavy duty switches for the following: 1) Loads 2) Solar 3) Battery. The logic here is that whenever you power on/off your system there should be a sequence. Never allow solar energy to enter your controller without the battery connected so that the power can be dumped somewhere. A load switch is also useful if you ever have a short you can switch all your loads off quickly. A switch that is impossible to accidentally flip is the correct solution here, like this one: https://www.amazon.com/gp/product/B07QTYH995/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
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Feel free to ask anymore questions!
This is the switch I got. I didn't really think about weathering, maybe I ought to get one with a more beefy housing.
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https://www.amazon.com/gp/product/B07QTYH995/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1