How to detect the failure of solar street lamp lithium battery

Many people may not know much about the working principle of solar lithium batteries and common fault detection. Here, we will share the knowledge.

First, after fully charging the solar street lamp lithium battery, connect the battery, ammeter and resistance wire.

1. Use a multimeter to measure the voltage of each battery, and write down the value, and note the discharge time. Adjust the resistance wire so that the ammeter pointer points to 5A.

2. During the discharge process, keep the ammeter always at 5A, and measure the battery voltage every 20 minutes, and record the measured value. When the battery voltage drops to 10.5V, the discharge time should not be lower than 84 minutes.

Second, solar street light lithium battery internal circuit breaker

Some batteries have internal disconnection, which means that the battery has voltage and no current. The whole vehicle has electricity and the motor does not turn. If a new battery is replaced, the whole vehicle is normal, which is a problem of the battery.

Third, the charger green light does not convert

When charging, the green light of the charger does not change. When the green light of the charger is light when it is empty, the battery is usually lack of water or sulfuric acid. After opening the top cover of the battery, unscrew the check valve or safety valve to the battery. Inject a proper amount of special replenisher (5ml ~ 8ml), and charge for 6-10 hours.

Fourth, solar street light lithium battery mileage

1. Check if there is any problem with the battery. If there is no problem, check the next item.

2. Check whether the no-load current and running current of the whole vehicle are too large, the no-load current should not exceed 1.2 amps, the running current is 500kg, the speed is 40km/h, and the flat cement or asphalt road should not exceed 7.5 amps. In the above case, replace the controller or motor and test again.

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