What battery should be used for Solar applications?
As we all know there are many types of batteries that could be used for the solar application. However not all batteries provide the same performance. From our extensive experience in solar industry, we decided to reveal in this blog post all information that we collected over the years on this subject.
Battery is the key of any solar system. The most important characteristics that you should focus on when estimating your solar battery options, are life cycle of solar battery and how much power it can provide.
The cost of solar and batteries are going down and solar option becomes more and more attractive solution to power your home or business. Below we will help you to compare all solar batteries options.
As you consider the battery for your solar application, you’ll come across a lot of complicated product specifications. The most important ones to use during your evaluation are the battery’s capacity and power ratings, depth of discharge, efficiency, warranty, producer and of course the cost of the battery.
Capacity Capacity is the total amount of electricity that a solar battery can store, measured in kilowatt-hours (kWh). Most home solar batteries are designed to be modular, which means that you can include multiple batteries with your solar battery system to get more capacity if you need.While capacity tells you how big your battery is, it doesn’t tell you how much electricity a battery can provide.
To get the clear understanding, you also need to consider the battery’s power rating. In the context of solar batteries, a power rating is the amount of electricity that a battery can deliver at one time. It is measured in kilowatts (kW). A battery with a high capacity and a low power rating would deliver a low amount of electricity, enough to run a several basic appliances for a significant period. A battery with low capacity and a high-power rating could run your entire home, but only for a few hours.
Depth of discharge (DoD)
Most solar batteries need to retain some charge at all times due to their chemical composition. If you use 100 percent of a battery’s charge, its useful life will be significantly shortened. This is especially important for GEL and AGM batteries, which are dated and old battery technology with very troubling DoD. If these batteries fall below 40% DoD, they will most likely stop working and then you will need to use battery charger to get them “back into the life”. Similar with the car battery, and situation when you leave your lights on for a long time, after that you need a battery charger to restart your battery.The depth of discharge (DoD) of a battery refers to the amount of a battery’s capacity that has been used. Generally speaking, a higher DoD means you will be able to utilize more of your battery’s capacity.