When it comes to investing in a home solar battery, many homeowners wonder how long their unit will last. Luckily, advances in solar battery technology have made it possible for solar batteries to last anywhere between 5 and 15 years. However, with solar power systems having a lifespan of 20-30 years, it is likely that homeowners will need to install a replacement solar battery at some point down the line.
There’s no denying that renewable energy sources like solar power are becoming increasingly popular with homeowners. With the right solar panel setup, you can produce enough energy to power your home with ease. However, to get the most out of their solar panels, homeowners need to consider supplementing their systems with a solar batteries.[1]
Besides providing peace of mind during power outages, solar batteries can help save money by keeping costs low when utility rates[2] are highest. But, how long do solar batteries last?
When looking at solar technology, it is important to understand the longevity of home solar battery units to ensure they are able to last throughout the entire lifespan of your solar system. Depending on the technology, home solar battery units can last anywhere between 5 and 15 years. When making the decision to invest in a solar battery system, it is important to understand that a replacement in the future will be likely, given the extended 20- to 30-year lifespan of a solar power system.[3]
If you’re evaluating energy storage solutions for your solar energy system, you have three main types of batteries to choose from: lead acid, lithium-ion, or saltwater. Of the three types, lithium-ion batteries (also known as li-ion batteries) are the most popular battery technology for residential solar energy systems.[4]
When it comes to solar energy module applications, the best batteries for your system will depend on your needs and budget. Lead acid batteries are still a viable option for some projects, but for longer lifespans, more reliable performance, and greater efficiency, lithium-ion, and saltwater batteries have earned their place as leading energy storage solutions. As technology continues to evolve, solar battery storage options may increase in the near future, giving homeowners more choices and greater flexibility in protecting and powering their solar energy systems. Ultimately, any type of energy storage system you choose should depend on your budget, needs, and environmental conditions.
Lead acid batteries are one of the oldest and least expensive forms of energy storage for grid systems and solar energy systems. While their cost makes them an attractive option, lead-acid batteries are not as efficient as their lithium-ion counterparts. They have a lower depth of discharge, which means the amount of energy they can store and deliver is ultimately lower than Li-ion batteries, and they also have shorter lifespans.
Lithium-ion batteries are often the preferred choice for residential solar energy applications. These batteries have higher energy densities, which means they can store more energy, and deliver larger amounts of power, than lead acid batteries. Li-ion batteries are also much more efficient at recharging and discharging, and they can perform reliably in a large range of temperatures, making them suitable for use in any climate. The downside to using lithium-ion batteries is the higher cost. However, when the total system lifecycle and cost savings are factored in, charging and discharging costs are roughly offset by the cost of the larger battery bank, making lithium-ion a reasonable choice even at a higher upfront cost.
Finally, saltwater batteries have recently landed in the energy storage market. Saltwater batteries are a type of flow battery, meaning they require liquid electrolytes to produce energy. Unlike lead-acid and lithium-ion batteries, saltwater batteries have no solid elements and can be used in any climate, since there is no thermal input required for operation. These batteries also tend to last longer than their lithium-ion equivalents –though their reliability is still unproven– making them a viable option for more long-term energy storage projects.
There are many factors that can impact the life of a solar battery and some of these can be managed to extend its lifespan. Here are a few of the most common factors:
When it comes to the question of ‘how long do solar batteries last’, the answer will depend on the type of battery you have chosen. Lead acid batteries may last between 5-10 years or more, while Lithium-ion and saltwater batteries may last between 10- 20 years with the proper maintenance and care.
Lead-acid batteries have been a mainstay in off-grid energy systems for a substantial amount of time. Despite their relatively low cost and availability, lead-acid batteries have a shorter lifespan and lower depth of discharge (DoD) compared to newer lithium-ion batteries.
The DoD of a battery reflects the amount of energy that the battery is able to discharge relative to its total kilowatt-hours (kWh) capacity. Typically, lead-acid batteries are able to provide a DoD of between 30-50%, whereas lithium-ion batteries can provide a DoD as high as 90-95%. as a result of the lower DoD, lead-acid batteries are typically used only in low-power applications such as backup power and emergency applications, whereas lithium-ion batteries are often preferred for applications such as solar and wind power.[5]
When considering a home energy storage system, lithium-ion batteries are the leading choice for their myriad advantages. Not only are lithium-ion batteries lighter, more compact, and longer lasting than lead-acid batteries– with a DoD of up to 80%– but they’ve also become increasingly affordable in recent years. Thanks to the growing demand, the price of lithium-ion batteries has dropped by an astonishing 85%, making solar power backed by solar storage more accessible than ever before.[6]
Though there’s a strong appeal to consider saltwater batteries as an alternative to lithium-ion and lead-acid batteries, it’s important to understand their capabilities. Saltwater batteries are unique in that they don’t contain any heavy metals, meaning they are more environmentally friendly and easy to recycle. However, their status as a new technology has yet to be tested, meaning reliability could be an issue. While saltwater batteries are a viable consideration for would-be solar energy users, lithium-ion batteries remain the standard for their consistent and dependable performance.[7]
The way you install and maintain your battery system is key to getting the most from your solar panel system. Depending on your location, this variable alone can determine how efficient and long-lasting your photovoltaic battery will be. Battery systems that are exposed to higher temperatures can deteriorate faster and this means your solar power system suffers. This makes it all the more important to decide on the optimal position to mount your solar battery system.
Heat is a solar battery’s worst enemy. If a battery runs too hot, it will quickly degrade, shorten its lifespan, and reduce efficiency. Most batteries are designed to work within a certain temperature range, usually from -10°C to 45°C, and should be placed in an area where they won’t be over-exposed to direct sunlight or freezing temperatures.
For those who live in areas with mild temperatures, you can install your solar system outdoors. Whereas inhabitants of harsher climates should consider placing the batteries in an insulated area like the basement or garage. Sunrun Solar Advisers can lend their expertise in judging the best party to house your solar battery units.[9]
Along with the solar panel and inverter, the solar battery plays a crucial role in your solar energy system. So, it pays to look into the warranty information of the product you purchase. Lead Acid batteries normally hold the shorter end of the stick in terms of warranty protection with coverage for about five years. On the other hand, Lithium-ion batteries enjoy up to ten years of warranty. Sunrun offers one of the most comprehensive solar panel and inverter warranties as well, incorporating roof and panel protection.[10]
Solar batteries offer a wide range of advantages for solar energy systems. Regardless of the environment you live in, their optimal use depends on their placement and maintenance. Therefore, getting professional advice can help ensure you get the most out of your photovoltaic battery and the accompanying solar panel system. Sunrun Solar Advisers can provide you with the best-suited installation advice, so you can enjoy worry-free solar energy.
The deeper you drain a battery when using energy, the more wear you’ll put on it. To extend the life of a solar battery, you should try to maintain a shallow discharge. We recommend keeping the discharge rate between 40% and 80% to keep the most amount of capacity and extend the battery’s life.[8]
When it comes to investing in a solar energy system, it’s important to know that proper maintenance will play an essential role in your system’s life expectancy. Poorly maintained solar battery systems can increase the chance of failure or costly repairs, which can range from $100 to $3,200,[11] not to mention the annual maintenance fees between $150 and $300.
However, there’s no need to worry as Sunrun offers comprehensive solar energy storage services. This includes a solar guarantee and 24/7 remote monitoring of your solar panels and battery, which keeps maintenance costs to a minimum.
Solar batteries are made up of numerous components and the quality of these components can play a big role in how long your solar battery will last. Make sure that the components you use in your battery are of quality and that the batteries are kept in good condition.
So, if you’re wondering how long solar batteries last, it’s important to consider that several factors can affect their lifespan. Here’s a look at some of the elements that play a key role:
Different types of battery chemistry can make a significant difference in how long the energy is stored. For example, the alkaline batteries found in solar garden lights are designed to last around one or two years, while lithium battery packs can last up to a decade with regular maintenance.
The quality of the solar battery’s installation can play an important role in its life span. Poor wiring and inadequate equipment can cause a system to fail more often, resulting in fewer years of energy output and greater repair costs.
The battery’s position and climate can affect its life expectancy. Exposure to the sun for long periods of time or sitting in cold weather for extended periods can reduce the number of years an average solar battery will last.
Neglecting to clean and maintain the battery may reduce its performance quality and life expectancy. If you monitor your solar battery and make sure to care for it, this can help it last longer.
With regular maintenance and a keen eye on its condition, you can extend the lifespan of your solar battery and enjoy quality energy for many years to come. With Sunrun’s solar energy storage services, you can take comfort in knowing that your system is monitored 24/7 and is always up to date.
It is important to research and identify the battery that best meets your needs and budget, but also, to consider the performance and durability of the product. Knowing how long you are able to depend on your battery is key to making an informed decision.
When it comes to investing in a business or home solar batteries, it is highly recommended that you look for a model that is able to maximize efficiency and enables maximum value for money. Along with research and proper installation, this will increase their lifetime and the overall productivity of your solar system.
Overall, no matter the type of solar battery system you choose, it is important to understand the performance and durability and allocate the time and resources to research and select a unit that meets your needs. When done right, solar battery units have the capacity to drastically reduce your electric bills and provide an efficient energy source for many years to come.
References
1. https://www.energysage.com/press/energysage-marketplace-intel-report-7
2. https://www.sunrun.com/go-solar-center/solar-articles/is-solar-battery-s…
3. https://www.solar-estimate.org/news/how-long-do-lithium-ion-batteries-last
4. https://www.energysage.com/solar/solar-energy-storage/what-are-the-best-…
5. https://news.energysage.com/depth-discharge-dod-mean-battery-important/
6. https://www.cnbc.com/2019/12/30/battery-developments-in-the-last-decade-…
7. https://www.solarpowerrocks.com/affordable-solar/get-home-solar-battery-…
8. https://www.gardenguides.com/12429648-how-to-recycle-batteries-in-housto…
9. https://www.solarpowerworldonline.com/2016/11/prepare-solar-battery-bank…
10. https://www.solarpowerworldonline.com/2017/01/life-expectancy-solar-arra…
11. https://www.homeadvisor.com/cost/cleaning-services/solar-panel-maintenance/
Solar batteries typically last for around 5-10 years. It should be noted that with proper maintenance, this lifespan can be extended depending on how the battery system is used and the quality of the unit chosen.
The performance and durability of a solar battery can be affected by its size and capacity, location of installation, environmental conditions, and the type of battery used within the system.
Yes, most solar battery systems are able to be repaired and maintained by qualified technicians. If a malfunction is detected, it is highly recommended that you contact an authorized service provider to have the issue addressed.
The most common type of batteries used within residential solar battery systems is lead-acid, lithium-ion, and nickel-cadmium batteries. Each type has its own advantages and disadvantages depending on the needs of the user and the size of the system.
Solar batteries are highly durable and dependable; under ideal conditions and proper maintenance, a solar battery should be able to provide efficient energy for around 5 to 10 years. However, with solar system, its life span can increase up to 20-30 years.
The lifespan of a solar battery is largely based on factors such as the quality of the battery, the type of battery, the environment they are used in, and the maintenance routine they receive.
A properly maintained solar battery is able to maintain relatively consistent energy output over the course of its lifetime. With proper care, the energy output should remain stable and reliable.
It is important to regularly inspect your solar battery and ensure that it is in working order. Inspections should be done every 3–6 months to identify any potential issues early on.
If you find an issue with your solar battery, it is important to address it immediately to prevent further damage or loss of performance. Consulting a professional solar installer is the best step to take if you encounter any problems.
The lifespan of a solar battery is largely determined by the quality of the unit, its storage capacity, and the amount of depth of discharge used when charging and discharging the system. Exposure to extreme weather conditions will also have an effect on the battery’s longevity.
Yes. Extreme temperatures, either too hot or too cold, can decrease the performance of a solar battery. Excessively high humid conditions can also reduce the lifetime of a solar battery.
Depending on the model and size of the solar battery, it may be possible to have them replaced. However, when deciding between replacing the batteries or purchasing a new system, it may be more cost-effective to invest in a new system altogether.
Solar batteries will require some level of maintenance such as keeping them away from highly humid environments, cleaning the terminals with an approved cleaner, and ensuring the battery box has proper ventilation. It’s important to follow the manufacturer’s suggested maintenance plan in order to maximize the lifespan of the battery system.
Yes, most solar batteries come with a warranty from the manufacturer. The term of the warranty will vary based on the model of the unit. It is important to be aware of what the warranty covers and any restrictions prior to purchase.
At Skyabound Solar Battery, we understand that returning maximum value on your solar battery investment requires knowledgeable customers, so we highly recommend that you understand the performance and durability information of any battery system you choose. Our solar professionals are well-versed in all the latest technologies and can advise you on the type of battery and size that fits your home’s solar system best.