How To Test A Trickle Charger With A Multimeter. A high amp reading indicates that your battery is low on energy and if the reading is low it indicates that your battery has enough charge. Battery Charger Testing Guide.
Wait about 30 to 45 minutes. The chargers have at least one meter as part of the controls. A multimeter only has wire ends and when it comes in contact with the right terminal it shows the reading.
Therefore your trickle charger would not be sufficient.
Smart trickle chargers are computer controlled but the computer takes an average voltage reading over time to determine the charge state of the battery. After switching on the trickle charger be sure to check the amperage meter. Check the number displayed on the multimeters display screen. If the charger has an output Voltage a little higher.
