Solar batteries, with an average lifespan of 3–5 years, are a crucial part of your solar setup. The most commonly used type is lithium-ion batteries, which can last up to 10 years. The longevity of these batteries isn’t just about the type; it’s also about the installation, depth of discharge, cycle life, environment, and maintenance.

This article aims to guide you on how to maintain the health of your solar battery and what you should be aware of when making a purchase.

What factors impact your solar batteries’ longevity?

The lifespan of solar batteries is influenced by various factors. As mentioned, the type of solar battery, cycle life, depth of discharge, storage environment, and maintenance all play a crucial role in determining how long your solar battery will serve you.

Battery Types

In 2023, the solar battery market will offer a variety of types, each with distinct lifespans and maintenance requirements. These include lead-acid and flow batteries, with lithium-ion being the most prevalent.

Environment

The battery’s location significantly impacts its lifespan. A battery exposed to the elements outdoors will degrade faster than one in a controlled environment. However, you can store your battery indoors. Garages are a common storage spot, but a sheltered outdoor area could also work. Solar batteries generally have a broad operating temperature range.

Depth of Discharge

The depth of discharge (DoD) is another crucial factor. It’s the percentage of a battery’s capacity that can be discharged without harming its health. Let’s consider lithium-ion batteries, the most common type for homes. Their DoD ranges from 80% to 95%. A typical lithium-ion battery has a 90% DoD, implying that if your battery has a 13 kWh capacity, you can use 11.3 kWh without causing damage. Modern batteries come with built-in protection systems that prevent you from utilizing the battery’s full capacity.

Cycle life 

Every solar battery has a unique cycle life, which refers to the number of full charge and discharge cycles it can accomplish. This factor is vital in determining a battery’s lifespan.

Maintenance 

Solar batteries aren’t high-maintenance due to modern technology’s reliability. However, monitoring your battery’s performance is beneficial to prevent future issues. Using an associated app, if available, can help ensure everything is functioning correctly.

Curious to know more about solar batteries? Check out our articles, “How to Tell If Your Solar Batteries Are Fully Charged” or “7 Steps to Top-up Water in Tubular Battery” for more information.