Solar panels use sunlight to convert into electricity for our daily use, and during peak solar periods, the excess solar energy needs to be stored in the solar battery, but during the process of use, there will be situations where the solar panels are unable to charge the battery, and we need to check them to make sure that the solar energy system is working well. This article will show you how to check if the solar panel is charging the battery, and users can go through these steps to identify any potential risks and fix them.

1. Check if the solar battery is working properly

1.1 Check if there is any change in the capacity displayed by the solar battery, as solar battery are usually lithium-ion batteries with an integrated battery management system inside the battery that shows changes in battery charging capacity.

1.2 Measure the solar battery voltage, disconnect the solar battery from the solar panel, pay attention to disconnect the negative terminal before disconnecting the positive terminal, to avoid short-circuiting when the cable comes into contact with other metal objects, and record the solar battery voltage.

1.3 Connect the solar panel to the battery, make sure that the solar panel charges the solar battery for a period of time, and measure the solar battery voltage. Pay attention to the positive terminal before the negative terminal, it is best to wear protective gear.

1. Compare the voltage of the solar battery before and after charging, if the voltage after charging is higher than the voltage before charging, it means that the charging is normal, if the measured voltage is lower than the voltage before charging, there is a fault.

2. Check if the solar panel is charging the battery

2.1 Check the solar panel indicator, most of the solar energy are equipped with indicator to show the charging status, check whether the solar energy indicator is on, it means whether the solar panel is charging the battery.

3. Check if the solar charge controller is charging the battery.

The solar charge controller is the central control unit for the charging process, any fault detected by the charge controller will disconnect the charging to protect the solar system.

3.1 Check the voltage and current displayed on the solar charge controller and the charging status, if the charge controller does not show charging activity, the charge controller itself and the related wiring may be faulty.

Conclusion:

Checking whether the solar panel is charging the solar battery can improve the utilization rate of solar energy, when the solar panel can not charge the battery, you can follow the above steps to check to ensure that the solar energy system works properly.