Megger det 5/2 earth tester I have no clue how to use it so decided to list it for sale

I’ve plugged it in the display lights up and the charge light comes on although I’d imagine it probably needs new batteries by now

There’s a few wires with it and all 4 black connection terminals are present comes in a nice sturdy carry case

Only listed as spares repair due to not knowing how to test it and unknown battery life