Outdoor Solar Street Lamps Battery Overview

Solar street lighting is now the main way to illuminate rural roads, and it plays a decisive role in improving the level of rural lighting. Some batteries have been useless, but due to untimely maintenance, many outdoor solar street lamps are now abandoned and unused, but the batteries are still deeply buried in the ground. Most of the batteries used in the previous solar street lights are lead-acid or gel batteries. Although they are maintenance-free, they contain strong acid solutions and lead plates. If they leak, they will inevitably pollute the land and groundwater resources. With the development of science and technology, the technology of lithium battery is becoming more and more mature, the capacity is getting larger, the lifespan is getting longer and the range of use is getting wider. More and more outdoor solar street lamp manufacturers are beginning to adopt lithium batteries.

1. Types of lithium batteries

Lithium batteries for outdoor solar street lamps can be divided into two kinds of materials, ternary lithium batteries and lithium iron phosphate batteries. Their synthetic materials, lifespan, working environment, size, etc. are different, and they also have their own advantages and disadvantages. Their prices are also very different. The cycle life of ternary lithium battery is 300-500 times, the price is cheap, and the lifespan is short. The lithium iron phosphate battery has a cycle life of more than 2000 times, is expensive, simple to install, small, and pollution-free.

2. Advantages of lithium batteries compared to lead-acid batteries

• The lithium battery is light in weight, saving time and effort to install.

• Safety: The safety of lithium batteries (lithium manganate, lithium iron phosphate) is different due to different materials. Although lead-acid battery technology is relatively mature, it pollutes the environment.

• Electrical characteristics: Simply put, when a battery with the same capacity is discharged at a high current, a lithium battery discharges about 35% more electricity than a lead-acid battery.

• Specific energy: The mass ratio and volume ratio of lithium batteries are about 45% higher than that of lead-acid batteries.

• Now the first choice for outdoor solar street lamps in the world is generally integrated solar street lights. Because the integrated all in one solar street lamp integrates the battery, controller, etc. The installation and maintenance of the streetlight are very simple. If a lead-acid battery pack is used, it needs to be buried in the ground next to the light pole and placed in the buried box. And if the lithium battery is used, it can be externally hung on the back of the battery board with its lighter weight, saving time and effort.

• Self-discharge rate: monthly self-discharge of lithium batteries is less than 3%, and lead-acid batteries are 15-30%, the difference is obvious.

• Environmental protection: Lithium batteries have almost no pollution, while lead-acid batteries have heavy metal lead pollution.

• Lifespan: The current general lithium iron phosphate charge is 2000 times, and the storage capacity is about 90% after 2000 times, while the lead-acid battery is about 500 times.

Lithium battery belongs to the nature of dry battery. It is a controllable and non-polluting energy storage battery, which is more stable and safer than lead-acid batteries. Shenzhen EXC outdoor solar street lamp manufacturer use lithium iron phosphate battery. The battery has more than 2,000 cycles of charging and discharging, with long lifespan, high safety, and high temperature resistance. At the same time, Shenzhen EXC use original technology to make the battery lifespan longer. Rechargeable battery is the key factor that affect the lifespan of the outdoor solar street lamps. When choosing the solar lamp, we must pay attention to the quality of the components. Except for the battery, the quality of the controller and the solar panel will also affect the quality of solar street lamps.

Shenzhen EXC-LED Technology Co., Ltd. (Hereinafter referred to as EXC-LED; brand: EXC), a national high-tech enterprise integrating LED application product design, R&D, production, sale, and service, has always been focused on LED outdoor lighting and cloud control system for years. If you want to know how to configure the outdoor solar street lamps that suits you, you can consult us, we will provide the most thoughtful lighting solution.