In the past, the vast majority of home solar energy storage systems used lead-acid batteries, but in recent years, this situation has begun to change significantly, with more and more home energy storage systems using lithium-ion batteries. Today, battery energy storage connector expert, Goldswisdom, takes you to find out whether lithium-ion batteries or lead-acid batteries are better for energy storage systems.

• Use of lead-acid batteries

Lead-acid batteries have been used since the 1970s as energy storage batteries in home solar power systems. It's similar to a traditional car battery, but it charges and discharges more often than a car. Since the cost of lead-acid batteries is lower than that of lithium-ion batteries, home users are more likely to choose lead-acid batteries.

•                                                    Fixed energy storage system of lead-acid battery and lithium ion battery
  

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• The cycle times of lead-acid batteries are about 1000 times at most, while the deep cycle times of lithium-ion batteries are mostly between 4000-6000. Therefore, in the high frequency charge-discharge cycle of solar energy storage system, users will have to replace lead-acid batteries frequently.

• Lead-acid batteries also suffer from inefficiencies in discharge and discharge, consuming extra energy during use and not being able to charge and discharge as quickly as lithium-ion battery systems. So, all things being equal, lead-acid batteries need more capacity, more space, which means more volume and weight.
  

Lead is also a toxic heavy metal, and even though it is recyclable, even the slightest mishandling of it can cause pollution.

The use of lithium ion batteries

Lithium-ion batteries have developed rapidly in recent years, becoming the first choice for many devices. Mobile power supply, mobile phone, laptop, car, etc. A growing number of home solar energy storage systems are using lithium-ion batteries. But lithium-ion batteries have some limitations, starting with cost.

Lithium-ion batteries have higher upfront costs than lead-acid batteries. Tesla Inc. 's Powerwall energy storage system will sell for $9,900 or $9,600 in the U.S. in 2018, including supporting hardware. This is a 14kWh battery system that can deliver up to 7kW at peak demand, and its cost does not include installation costs. Gold Wisdom is designed to provide customers with cost-effective battery docking terminals, the use of joint development mode to reduce costs for customers, and each large current joint is made of brass plated real gold and PA nylon insulator, quality and quantity, rest assured to use!

With the improvement and optimization of the lithium battery industry chain, the cost of lithium ion batteries is falling. A November 2017 report found that lead-acid battery storage systems for home solar can cost between $598 and $635 per kilowatt-hour to install. Lithium-ion batteries cost $831 to $1,089 per kilowatt-hour to install. But the low cost of lead-acid batteries hides some additional costs, such as a shorter working life and higher operating costs.

Lithium-ion batteries and home energy storage

The cost of lithium-ion and lead-acid batteries currently used in home energy storage systems is very important. They can be used either as stand-alone energy storage systems or in conjunction with residential solar power facilities to meet some or all of the energy needs of household users or businesses.

In terms of working life, lithium-ion batteries are expected to last 8-10 years, and they are able to charge and discharge to much higher levels without significantly reducing capacity. At the same time, Ames recommends using high-quality lithium-ion battery storage connectors to reduce maintenance costs and extend the life of your home's energy storage.

Lithium-ion batteries for home energy storage aren't light, but they're about 30% lighter by volume than lead-acid batteries of the same size. Faster charging at higher voltages;Safety performance has also been greatly improved.

Of course, there are many more advantages of lithium-ion batteries. In a word, lithium-ion batteries are more advantageous than lead-acid batteries in energy storage applications, and as the cost falls, they will be more and more widely used in energy storage systems.