How Long Do Solar Batteries Last (And Why)?

How Long Do Solar Batteries Last (And Why)?

Exact Answer: Between 5 – 15 years

Solar batteries are devices that store energy from the sun. One can use it to store solar energy for later use or provide backup power in a power outage.

Solar batteries work by absorbing light energy from the sun and storing it as potential chemical energy in an electrolyte. The stored chemical energy can then be released back into the grid when needed.

Solar batteries come in various types, including lead-acid, nickel-cadmium, and lithium-ion. They are rated by their storage capacity’s watt-hours.


How Long Do Solar Batteries Last?

Type Duration
Solar batteries5 to 15 years
Normal batteries5-10 years 

Solar batteries last for around 5 to 15 years. They are designed to be used in one direction, from sunlight to battery power. The life expectancy of a solar battery depends on how it’s used – it’s charged up only at night and never exposed to any sunlight during the day. 

Then this kind of use will shorten its lifespan drastically because overtime charge cycles (the number of times that a battery has been fully depleted and then recharged) will increase until eventually they cannot be replenished anymore. 

Most residential solar systems produce about 2-3% capacity loss per year due solely to cycling between full charging cycles and discharging ones.

There are several benefits to solar batteries, so they are becoming increasingly popular. Some of the benefits include:

  1. One can store energy from the sun to use at a later time. This is great when one doesn’t have access to solar energy (e.g., at night) or needs more energy than one’s solar panels can provide.
  2. Solar batteries help reduce the reliance on fossil fuels. Using solar energy can reduce the carbon footprint and help slow down climate change.
  3. Solar batteries are a great way to save money on electricity bills. One can use energy from the sun during peak hours by storing energy from the sun.
  4. It is better for the environment.
  5. One can feel and energy security.

Why Would Solar Batteries Last So Long?

The average life of a solar battery is 5 to 15 years. However, sometimes, the lifespan of solar batteries has been estimated to be around 20 years, which is much longer than the lifetime of most other lithium-ion-powered devices.

Unlike other devices or storage methods (such as lead-acid), photovoltaic modules only lose less each year. The result is that they continue to produce more electricity than they use from day to day over time, so there’s no need for “refreshing” at night when demand falls off sharply after hours.

Another reason is that the battery has a long life because it does not use any liquid or gaseous chemicals.

Solar batteries last for many years due to the lack of liquids found in traditional lead-acid car batteries, which means there’s no corrosion and no loss of power production over time. Solar battery technology is also much more efficient at converting sunlight into stored energy, so they require less maintenance than other types of storage systems as well.

Several factors can affect the life of one’s solar battery. These include:

  1. The type of battery one uses 
  2. How does one charge it 
  3. The size and quality of the sunniest spot in one’s home – if there’s not much direct sunlight, panels will work harder to generate electricity which shortens their lifespan. 

It’s also important to note that if one lives in an area with unpredictable weather patterns, such as California, it might be best for the home solar batteries to have some protection from hail damage by installing an enclosure around them. This would give them more time without being exposed to extreme heat or cold temperatures.


Solar batteries are guaranteed to last for a long time. The lifespan of solar batteries will depend on their usage, type, and quality of the battery. In most cases, when properly cared for, solar batteries can be expected to last 5-15 years or more before needing replacement. 

However, suppose one uses solar-powered lights every day during daylight hours but only once per week at night with minimal brightness requirements. In that case, it is better to expect them to last longer than someone who uses their light daily all over the house at high-intensity levels.


dot 1
One request?

I’ve put so much effort writing this blog post to provide value to you. It’ll be very helpful for me, if you consider sharing it on social media or with your friends/family. SHARING IS ♥️

Avatar of Nidhi


Hi! I'm Nidhi.

Here at the EHL, it's all about delicious, easy recipes for casual entertaining. So come and join me at the beach, relax and enjoy the food.

Leave a Reply

Your email address will not be published. Required fields are marked *