Trying to figure out what im doing wrong. I bought a smart battery protect ran a wire from the battery positive to the in terminal and ran the black wire to the negative battery terminal.
Nothing happens, no lights, no bluetooth signal just nothing.
So i figured it maybe was a bad unit so i ordered another, this one only works with load attached but on my 24v battery its reading between 5 and 9 volts and power cycles endlessly.
Am i missing something? Its the 65amp version if that makes a difference.
Hey mate, I am setting one up atm the moment to use as a UPS for a RPI. I am going to use a trickle charge from the multiplus. This is how I have it wired. The ground comes from the middle 3 pin socket and there is also a remote. When I remove the remote you can see there is a small voltage. Have a look and see if there is anything different.
When I first set it up there was a high voltage alarm because it was set to 12V. It should have a solid blue light in the photos.
Thanks, mines wired pretty much the same. I found a video showing how to reset by jumping the ground and prog but that didnt do anything. If i jump the ground and alarm it works like it should until i remove the jumper and voltage drops and the unit turns off. I submitted a support ticket
What is the black wire? Is it the load or battery negative? This is where the load goes. You dont really need a battery protect for a lithium the BMS will disconnect when it get low. You really need to use M6 lugs as well not much contact with that 10mm.
The black wire was to a positive bus bar, i cut my battery cable to install and since it didnt work i decided to scrape together whatever cables were laying around to test.
Im hoping to use the battery protect to cut power to an ecoflow delta i charge via the solar input giving more important loads longer life.
A full battery should be 27.2V after charging and resting the voltage 25.58V is near flat. Any reason for it being so low? I wonder if the BMS is disconnecting? Can you put some charge in that battery. A disconnect does not work that great with lithium and best for lead acid due to fact voltage is close to SOC. If you set it to cutout at 13V depending on the load it could 75% down to 25%.
They are a good switch for remote switching. If your solar charger has load terminals you could do some control with that. Or if you get a cerbo and bms and can track the SOC you migh tbe able to use it. My voltages are 0.01 to 0.02 diff.
Something seems off. When you remove it, check for continuity and verify if the relay is working it should be OC. It might be welded and used for a capacitive load. I’ve heard of people damaging them; using them for an inverter is not allowed.
