According to foreign media reports, in the past, most residential solar users deploying battery energy storage systems used lead-acid batteries, especially batteries that were completely off the grid. However, this situation has started to change in the past few years. Lithium batteries are increasingly used in residential energy storage systems. So, which of the lithium-ion and lead-acid batteries is more suitable for energy storage systems? The following are the advantages and disadvantages of Lithium Iron Phosphate Battery Manufacturer.
1. Application of lead-acid battery
Since the 1970s, lead-acid batteries have been used as a backup power source for residential solar power generation facilities. Although they are similar to traditional automotive batteries, batteries used in residential energy storage systems are called deep-cycle batteries because they are discharged and recharged more often than most automotive batteries.
Traditionally, lead-acid batteries cost less than lithium-ion batteries, which makes them more attractive to residential users. However, they have a much shorter operating life than lithium-ion batteries.
Comparison of cycle life of lead-acid batteries and lithium-ion batteries in fixed energy storage systems
The operating life of lead-acid batteries is lower than that of lithium-ion batteries. Although some lead-acid batteries can be charged and discharged up to 1,000 times, lithium-ion batteries can be charged and discharged between 1,000 and 4,000 times.
Most lead-acid batteries have a service life of about 5 years and have a corresponding warranty period. As a result, residential users will have to replace lead-acid batteries multiple times throughout the life of a solar power facility.
The storage efficiency of lead-acid batteries is lower than other energy storage technologies such as lithium-ion batteries. Due to their low efficiency, they also cannot be charged or discharged as quickly as lithium battery energy storage systems.
Lead-acid batteries have a low discharge capacity, which means that consuming too much energy can quickly deteriorate their ability to store energy. Because lead-acid batteries have relatively low energy storage efficiency and cannot be fully discharged, lead-acid batteries require more energy storage capacity and space than lithium-ion batteries. Lead-acid batteries are also much heavier than lithium-ion batteries. Placing lead-acid batteries requires a stronger support and more space than lithium-ion batteries.
Lead is a toxic heavy metal. Although it is recyclable, it can still be contaminated by improper handling.
2. Application of lithium ion battery
Lithium-ion batteries are quickly becoming the battery of choice for many power applications, from wireless power tools to laptops and vehicles. More and more residential solar power facilities use lithium-ion battery energy storage systems. However, lithium-ion batteries still have some limitations. The first and most important point is the high cost.
The up-front cost of lithium-ion batteries is higher than that of lead-acid batteries. But the cost of lithium-ion batteries is rapidly falling. It is important to understand the cost of lithium-ion and lead-acid batteries currently used in residential energy storage systems. They can be used either as stand-alone energy storage systems or in conjunction with residential solar power facilities to meet the energy needs of some or all residential users or businesses.
Lithium-Ion Battery Energy Storage Systems
In terms of working life, Lithium-Ion Battery Energy Storage Systems are expected to continue to operate for about 10 years, and they can charge and discharge to higher levels without significantly reducing capacity. Lithium-ion batteries can also be charged faster at higher voltages. Although lead-acid batteries can take up to 16 hours to fully charge, even the slowest-charging lithium-ion batteries can be fully charged in about four hours. In terms of weight. Lithium-ion batteries used in residential energy storage systems are not light, but are much lighter than lead-acid storage.
All in all, lithium-ion batteries have more advantages in energy storage applications than lead-acid batteries, and as costs decrease, they will become more and more widely used in energy storage systems.
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