Hi, I got this cheap buck boost power supply from Amazon today. Model number is ZK-4KX. I want to use it to charge a battery at a max of 1 amp. I set the current limit to one amp and the voltage to 13v. My battery is around 12.5v currently.
From a cold boot the power supply works fine (I demonstrate that at the end of the video). But if I toggle the output off and back on again, the power supply delivers as much current as the load will draw and then goes into over power protection mode (OPP on the screen). This is defective, right? Just making sure that I'm not doing something wrong.
Here's a 1 minute video of me demonstrating the issue.
From a cold boot the power supply works fine (I demonstrate that at the end of the video). But if I toggle the output off and back on again, the power supply delivers as much current as the load will draw and then goes into over power protection mode (OPP on the screen). This is defective, right? Just making sure that I'm not doing something wrong.
Here's a 1 minute video of me demonstrating the issue.