I want to measure output of a charger (MODEL: GB28-25126) with below picture:
When I connect my HIOKI multi-meter (3280-10F) to output of my charger in order to measure the resistance, it shows OF (OverFlow) at first and then starts decreasing until 5 mega Ohm. At 4 mega ohm it suddenly shows 4.5 kilo Ohm and starts increasing until 9.67 kilo ohm and then will remain constant. I have some questions:
- What causes that behavior?
- At last what is the output resistance of charger?
- Above all, if I connect a 12V battery to the charger, the battery will be depleted by the charger when it is not connected to home electricity?