Nowadays, solar lights are becoming more widely used whether in rural or urban areas. Solar lights use green and renewable energy, they absorb power from the sun and convert it into electricity stored in batteries, then discharge to the led light when the solar light works.

However, some people are still worrying about problems that may happen when using solar lights, one of the reasons is that they think it is a headache to change the batteries after 2-3 years of use.

How to make the solar lights batteries work longer? Here are some tips:

  1. Avoid the batteries being overcharging.

The lifespan of the solar light battery is closely related to the heat accumulation generated inside the battery, and the heat source inside the battery mainly comes from the power loss of the internal electrochemical reaction. In the oxidation reaction, the float current will increase to generate more heat. During constant voltage charging, the float current will increase with the temperature rise, which will further increase the temperature. If the batteries are being overcharged, the high temperature will bring serious harm to the batteries, such as battery water loss, shell “bulging”, In severe cases, the battery will be scrapped. To prevent overcharging, it is necessary to provide the charging voltage value in strict accordance with the manufacturer’s instructions. Do not use a higher voltage charger on the batteries to avoid overcharging. It also requires the solar lights manufacturer to offer stable output voltage from the solar panel to the batteries when producing the solar lights. It is very important to buy from a professional & reliable solar light manufacturer or supplier.

2. Avoid the batteries insufficient charging.

Insufficient charging is mainly caused by the charging voltage setting is too low, or there is a problem with the control system. In addition, the position of the solar street light will also be affected. If the street light is placed under a tree or near a shelter, it will affect the illumination and cannot convert light energy into electrical energy, so that it cannot be charged or is insufficiently charged. Thus, when installing solar lights, people need to pay more attention to the location, especially the solar panel location to make sure it can receive the sunlight as much as possible.

3. Avoid the batteries over-discharge.

The depth of discharge is closely related to the design charge and discharge cycles (service life) of the battery. For example, when the depth of discharge is 5%, the number of cycles is 10,000, and when the depth of discharge is 50%, the number of cycles is only 800. Serious over-discharge will cause the battery to be unable to activate to a better state, or even to be scrapped. With different discharge rates, the discharge time and termination voltage are different, and the effective capacity released is also different, and is affected by the ambient temperature.

If any more questions about solar lights batteries, welcome to contact our Judn Solar Team, we are always ready to help.