Solar street light, which battery is good?
First let's take a look at the characteristics of these batteries:
1. Lead-acid battery: The plate of lead-acid battery is composed of oxides of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantage is that the voltage is stable and the price is cheap; the disadvantage is that the specific energy is low (that is, the electric energy stored per kilogram of battery), so the volume is relatively large, the service life is short, about 300-500 times deep cycle, frequent daily maintenance, current solar street light The industry is still heavily used.
2. Colloidal battery: It is actually an upgraded maintenance-free version of lead-acid battery. It replaces sulfuric acid electrolyte with colloidal electrolyte. It has some safety compared with ordinary batteries in terms of safety, storage capacity, discharge performance and service life. Improvement, the price is even higher than the ternary lithium battery. It can be used in the temperature range of -40 °C to -65 °C, especially for low temperature performance, suitable for cold and cold regions in the north. It has good seismic performance and can be safely used in various harsh environments. The service life is about double that of ordinary lead-acid batteries.
3, ternary lithium battery: higher specific energy, small size, fast charging, high price. The ternary lithium battery has a deep cycle number of about 500-800 times, and its life span is about 1 times longer than that of a lead-acid battery, and the temperature range is -15 ° C - 45 ° C. However, the disadvantage is that it is not stable. The ternary lithium battery of the unqualified manufacturer may explode or ignite when overcharged or overheated.
4, lithium iron phosphate battery: higher specific energy, small size, fast charging, long service life, good stability, of course, the highest price. The number of deep cycle charging is about 1500-2000 times, the service life is long, generally 8-10 years, the stability is strong, the temperature range is wide, and it can be used at -40 °C-70 °C.
In summary, solar street lamps are of course best used with lithium iron phosphate batteries, but at a higher price.
We, SOKOYO, Are Manufacturer, Focus On Solar Outdoor Lighting Since 2008.
If you want to know more about us, welcome to enter: www.solar-streetlights.com
Or contact us directly, we are always at your service!
Tel: +86-514-87914128 Mail: firstname.lastname@example.org