Solar batteries are generally common in four kinds of batteries, the first is lead-acid battery, the second is ternary lithium ion battery, the third is colloidal battery, and the last is the most common iron phosphate lithium ion battery. So which of these four batteries is better? Let‘s take a look at the features of these four batteries.

Solar battery first: lead-acid battery

The plate of a lead-acid battery is made by combining lead and lead oxide, and the electrolyte is a water solution of sulfuric acid. The main advantages of lead-acid battery are relatively stable voltage, relatively cost-effective; The main disadvantage is relatively low than the energy, so the volume is much larger than the general battery, the service life of the lead-acid battery is shorter, generally 300-500 deep cycle, maintenance is more and more frequent, but because of the price advantage, in the solar street lamp industry is still widely used.

Solar battery second: ternary lithium ion battery

Ternary polymer lithium battery refers to the battery cathode material using ternary positive material of lithium nickel-cobalt-manganate or lithium nickel-cobalt-aluminate. The cathode material of ternary composite battery is nickel salt, cobalt salt and manganese salt as raw materials, and the ratio of nickel, cobalt and manganese salt can be adjusted according to the actual situation. The battery with ternary material as positive electrode has high safety compared with lithium cobalt acid battery.

Solar battery third: colloidal battery

Colloidal battery: it is equivalent to the upgraded version of lead-acid battery. It is maintenation-free, which solves the frequent criticism of lead-acid battery maintenance. The colloidal electrolyte replaces sulfuric acid electrolyte internally, which improves the storage capacity, discharge capacity, safety performance and life, but sometimes even surruns the three-way lithium-ion battery in price. Colloidal battery can be used in the temperature range of -40℃65℃, low temperature performance is better, can be used in the northern alpine region. Good seismic performance, can be used safely in a variety of harsh conditions. The service life is twice or more than that of ordinary lead-acid batteries.

Solar battery fourth: iron phosphate lithium ion battery

Iron phosphate lithium ion battery is a collection of many advantages as one of the battery, it is higher than energy, small size, fast charging, durable, good stability, but the price is relatively high in all batteries. Its deep cycle charging times are generally 1500-2000 times, a group of iron phosphate lithium ion batteries in normal use, generally can be used for 8-10 years, can be used in the environment of -40℃-70℃, the use of temperature range is still relatively wide.