Victron Battery Protect UP IN SMOKE in 12V system. HELP

[73powerstroke]

Million different ones lol

 

[rmaddy]

That second one is much better.

 

[73powerstroke]

That chart is scary. No one should ever use that chart. Where did you find that?

Wire Amp Chart - Original True® Retailer

To choose a adequate wire gauge, determine the amp draw(amperage) that the wire circuit will carry. Then measure the distance that the wire will travel(length) including the length of the return to ground(the ground wire running to the chassis or back to a ground block or battery). Using these...

www.dfna.info

 

[73powerstroke]

That second one is much better.

I sent the other on accident

 

[Lilikoi_Heavy_Industries]

Yes Up here in Orchidland, Neighbor?

Yes, welcome!

Sorry that the Victron battery protect didn't do what it sounds like it should, it's a weird one. I'm a big victron fan, but that specific component is pretty confusing, I've seen people wire them up wrong on youtube before I think too because it sounds like it does something that it doesn't.

If you get a Victron inverter you could tell it to just shutdown at a certain voltage (or any inverter with programmable shutdown volts).

I don't have any DC loads on my larger systems, so no DC low voltage disconnect like your battery protect is used... They are all 48V systems for solar charge controller & wiring efficiency. The inverters stay on to run the fridge & deep freeze so it's important to get a low idle wattage inverter in that use case.

My 12V water pump runs off a single small panel and cheap marine battery, if there's not much sun for awhile I can turn on my 12V battery charger and use my AC power to run it (since I have a sine wave inverter, or generators if the main system batteries are low also).

 

[BlueMarblePA]

Don't know if will help but i use a Tyco Kilavac contactor switched by the relay out put on my BMV 702.

Can you explain how this works? I want to use a low voltage disconnect to prevent my inverter from draining the battery.

 

[BlueMarblePA]

I did find this online as an option. https://windandsolar.com/smart-battery-saver-shutoff/