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240VAC 50A relay, triggered by a battery voltage.

Shale MacGregor

Solar Enthusiast
Joined
Sep 5, 2021
Messages
641
This seems like something simple that has been done before, but apparently I suck at searching.

I want to measure the voltage of a battery, and when it hits a certain voltage (full charge) it triggers a 240VAC 50A relay. Then when the voltage drops to a certain point, it triggers the relay again.

I am pretty sure I can plan and build this, and will, but I figured I am probably overlooking a simple existing solution or product that is out there and would rather spend the time on something else.
 
Regular 50 amp transfer switch controlled with a battery protection relay would do the trick.

https://www.bestconverter.com/50-Amp-Transfer-Switches_c_183.html

https://www.ebay.com/itm/383760514786

Although the relay link is designed for split phase so I believe it has a 120v relay. May need a different relay if no split phase.
Try these:https://www.amazon.com/dp/B07Q1J763H?ref=ppx_yo2ov_dt_b_product_details&th=1 with https://www.amazon.com/dp/B098DRZYJS?ref=ppx_yo2ov_dt_b_product_details&th=1.
Here is my quick solution I did: https://diysolarforum.com/threads/r...tery-low-voltage-condition.43122/#post-544626
 
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