Low Voltage Disconnect and Charging Discharging Protection 2 IN 1 40A DC 5V-60V Low Voltage Cutoff with LCD Display Low Voltage Protector Disconnect Switch Module Charging Discharging Protection Board

The media could not be loaded.  Worked great for replacing the control boards that are built into a lithium battery for my portable air conditioner.Simple setup if even if the directions are a little hard to understand at first. You have to know the high and low voltages needed for your particular device for both charge and discharge modes.Buy 2 - This board does either charge control or discharge control but not both at the same time

This holds up well to my kid and a fresh 18 bolt Milwaukee battery. Best I have found so far.

For what it is, and the price, it's usable. The problem when using it with a charger or solar panel to charge a battery is: the charging source voltage/current is dumped into the same circuit as the working and measuring source. The local increase in voltage causes false triggering since the actual battery voltage is lower. You can compensate by adjusting the target higher, but the better way would be to have a separate relay (as in other similar products) to carry the power of the charging source to the battery.

Used for dash cam. Plus one more relay and the button for disconnection. Adjusted for 12v shutdown and 13.3v start. Extra relay and button disconnect from the battery if I don't need my dash cam (if I'm at home).

I would stay away from this low voltage disconnect device if your application uses more than 20 amps of current. Although this device is rated at 40 amps, the terminals are too small to hold a wire that will carry that much current.40 amps of current requires an 8 guage wire (8AWG). The largest size wire the terminals can take is 12AWG, which can carry up to 20 amps. The terminals won't even take a 10 gauge wire, which is required for 30 amps of current. For this reason I would not rate this device for more than 20 amps. Furthermore, forget about using ring terminals or spade terminals, because the spacing of the terminal block on the device is too close to allow it. You have to stick the bare wire under the terminal, which works, but is not nearly as clean and reliable as using ring or spade terminals that have been crimped to the bare wire.I bought this for a solar system to disconnect the battery from the inverter if the battery voltage falls below a certain point. I may still use this device, but only with an auxiliary relay that can handle the 40 amps needed to act as a battery disconnect in my system. The auxiliary relay requires less than 1 amp, so this disconnect device should be able to trigger it with no issue. See photos.

Installed into a power wheel to save my drill batteries. Son used it for in the morning and didn’t shut it off at programmed voltage. Used it later and screen wouldn’t turn on. Had voltage going in but nothing out of it

This multifunctional protection board has become an essential component for when we are camping and using our truck battery. We mainly use it in protecting our truck battery from discharging when running a portable fridge while we are camping. The LCD display offers real-time monitoring of voltage levels during charging and discharging. This level of precision enables me to keep a close eye on the health of my devices and prevent potential damage from voltage fluctuations. This will detect voltage drops below a predefined threshold and promptly disconnects the power supply, ensuring that my devices are shielded from operating under unsafe conditions. Whether it's during the charging or discharging phase, this protection board ensures that my devices operate within safe voltage parameters. This protection board is compatible with a wide range of devices, from battery-powered gadgets to charging systems. Its versatility makes it suitable for various applications, from DIY electronics projects to household electronics protection. Knowing that my devices are equipped with a robust protective barrier against voltage-related issues, even in my absence, offers me a sense of peace and confidence. Highly recommended.

This one works!! No " WHATS THIS WHATS THAT. It just works!!! Follow instructions.

It work for 1 week and broke.A have a 30 amp fuse and it didn't burn so my system draw less than that and the module stop working anyway.