The detection of the battery usually includes the following aspects:
1.*Voltage detection**: Use a multimeter to measure the voltage of the battery, and you can preliminarily judge the state of the battery. For a 12 volt lead-acid battery, the normal state of charge voltage should be at 126 volts or more if the voltage is lower than 119 volts, may need to be charged.
2.*Internal Resistance Test**: The internal resistance of the battery is an important indicator to reflect its performance. The internal resistance of the battery can be measured by using a professional internal resistance tester, and if the internal resistance increases abnormally, it means that the battery may be aged or damaged.
3.*Discharge test**: By discharging a certain load and detecting the discharge time of the battery, the actual capacity of the battery can be evaluated. Under normal circumstances, the discharge time of a new battery should be able to meet its rated capacity.
4.*Electrolyte Density Test**: For serviceable lead-acid batteries, the state of charge of the battery can be assessed by measuring the density of the electrolyte. A high density indicates a good state of charge, while a low density may require charging.
5.*Visual inspection**: Check whether the battery has abnormal phenomena such as leakage, deformation, heating, bulging, pole corrosion, etc., which will affect the performance and service life of the battery.
6.*Temperature Detection**: The operating temperature of the battery has an impact on its performance. Overheating or cooling can affect the life and performance of the battery.
When performing battery testing, it is important to pay attention to safety, avoid electric shock and chemical injury, and use the correct tools and methods. If you are unsure how to perform the test, it is advisable to consult a professional or refer to the instructions of the battery manufacturer.