Yes
Solar street lights are indeed equipped with batteries. Their core function is to convert light energy into electrical energy through solar panels and store it in batteries for nighttime lighting. The following is a detailed analysis:
1. Necessity of batteries
Solar street lights rely on batteries to store the electricity converted during the day to ensure continuous power supply on rainy days or at night. Without batteries, the system will not be able to work when there is no light.
2. Common battery types
Currently, mainstream solar street lights use the following four types of batteries, each with its own characteristics:
Lead-acid batteries: low price but short life (2-4 years), frequent maintenance, and large size.
Colloid batteries: an upgraded version of lead-acid batteries, resistant to low temperatures (-40℃~65℃), longer life (5-8 years), suitable for high-cold areas.
Ternary lithium batteries: fast charging, small size, but poor safety (may overheat and explode), life of about 500-800 cycles.
Lithium iron phosphate battery: The best overall performance, life of 8-10 years (1500-2000 cycles), extreme temperature resistance (-40℃~70℃), but the price is higher.
3. Voltage specification
Solar street light battery voltage is usually 12V (most common), 24V, 36V, etc., higher voltage (such as 48V, 72V) is less common, depending on the design requirements.
