Electronic Battery Load Tester

Without a schematic it's near impossible to determine what might have failed.

At $20-$30, I wouldn't be wasting my time trying to fix it, just buy another one and be more careful about hooking it up.

For others - it's commonly known as a DTL150 150W Electronic Load Battery Discharge Tester - there's other variations of it.

Add an ideal diode to the test leads to prevent damage if reverse polarity is
applied again ?



Regards, Dana.

I already bought a replacement, it looks simple, I am sure there is a way to figure out what is wrong with it, ill try a thermal camera once I can order one, just figured knowing what I did and knowing components someone with knowledge would have an idea of what to look for. Either way thanks for the responses and ive looked for a schematic i dont think one exist. But I mean look at mend it mark, half the time he has to make up his own schematic so there has to be way to just understand what is going on and by logic figure it out, but that I figured took years and more experience I guess what I am saying is DANG MAN

it turns on it just doesnt draw any current maybe that detail might help someone

The first thing I'd try is test the main power device, that had the heatsink on it?