Looking for some help with one of these constant current load testers. Never used one before, looked it over and watched a few videos. Pretty sure there’s something wrong with mine.
Brand new. Powered in back with included 9v1a power supply.
So started off connecting a 10S3p battery pack to the inputs on the left. Yes I double checked polarity. Yes the current control knobs are all the way counter clockwise. Got a spark— yea a 10S spark. Replaced the XT60 that charred the negative pin.
Tried again, this time with an XT90S and I put a 15amp fuse inline. Smoked the fuse right away when i connected. Hmmm
So now I’ve connected something smaller (included usb A to alligators) to either end of a single 25R battery and it immediately shows 1V and 11amps. The battery and cables got warm and control knobs still at minimum. The cell dropped to 3.05 V when I tested it after it was disconnected.
Here’s the 25R connected
Fan spun when it was plugged in. Never saw correct voltage on screen 3V or 42v on the prior test.
I tried to test a portable battery pack and got no readings. I tried plugging a 10S 2A charger into the input 5.5 jack and get nothing.
Seems like it’s trying to pull max amps. Any way to test it? No burn marks underneath