2 PCS Low Voltage Cutoff, Icstation DC 12V-36V 20A Over Discharge Protection Low Voltage Protector Disconnect Switch Module for Lead Acid Lithium Battery Solar Panel Light

There are two types of these and both look similar: ones to prevent overcharge and ones to prevent over-discharge. This is the latter--it disconnects the load when the battery voltage gets to low. I have one connected to my car's starter battery so that I can leave radios etc on all the time and not worry about draining the battery so much it won't start the car. I have another one connected to the auxiliary battery in my car. That battery doesn't have to start the car but I stl don't want to discharge it too much which shortens the life of even a deep cycle battery. I like these becuase it's easy to change the settings (the voltage where it disconnects when it gets to low, and the difference between that voltage and where it will reconnect. I set the low voltage at 12 v for the auxilary battery and 12.5 volts for the starter battery. Both are set a 1 volt difference so they reconnect when the engine starts charging the batteries again.) I really like that I can view the battery voltage all the time.

They work and are pretty easy to figure out. However, the terminals don’t hold wires that well. They keep falling out no matter how I clamp them down. Have to bring screwdriver with me or we might get stranded while riding power wheels around the neighborhood.Using it to cut the power from power tool batteries to power wheels cars/truck so they don’t get overdrained and ruined.It gets pretty hot, but keeps working pretty constantly when used for half an hour to an hour. Might want to run it with a relay instead of running power right through it?

Works great. You hold the left button to set the voltage that the relay will switch off at. Then you hold the right button to indicate the voltage that the relay will switch back on. I had it at 14.4 and 1.5 so the relay turns off at 14.4 and on again at 14.4+1.5.It has some other features to create a slight delay in the switching. Not sure if this is necessary but it works great.I have been running this at 5 amps and 20v continuously without any problems.

Exactly what i needed.Good quality.

The 12V-36V Low Voltage Disconnect performs well once properly programmed, offering effective control over voltage levels. However, there have been occasional issues where the settings do not hold on the first few attempts. While it may require some initial adjustments, once configured correctly, it reliably serves its purpose in disconnecting power at low voltages. Users may need to be patient during the setup process to ensure optimal performance. Overall, a functional solution for managing low voltage situations with the caveat of needing careful programming.

This LVD is a great solution to an ongoing issue of mine. How to monitor the voltage, and protect deep cycle batteries from excessive discharge. I no longer need to pull out the multi meter to test voltage, it's right in front of you. Having a highly adjustable cut out voltage makes this unit versatile for different battery chemistries. I encase my LVDs in clear heat shrink to provide a small level of mechanical and electrical protection. I highly recommend this LVD!

recieved the two boards, hooked them up to my variable dc power supply. first board was a weird one. It would show the output LED to go on and off at the right settings but the power out would still be on no matter what the LED said. Second board, must be a short somewhere, my power supply said no go and the board do not even power up.

this product works but the manual instructions on setting parameters is very wrong. i found out after returning the first set and playing harder with the 2nd set received. resetting only works after a click to get to the set value follow by a double click to get to the edit mode.