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What size solar battery do I need?

Solar Battery Storage Systems
July 31, 2025
by david
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What size solar battery do I need?

What size solar battery do I need? If you already have solar panels at your home in Kettering or are considering solar panels alongside solar battery installations, DNA Father & Sons Electrical are highly skilled and MCS approved solar panel and battery installers. 

Why should I consider a solar battery?

Installing solar batteries to accompany solar panels at your property in Kettering allows you to store excess electrical energy generated using the Sun’s light energy. Storing electrical energy for later use means you have energy ready to use when you need it in the evenings.  

What size solar battery do I need?

Our solar specialist can help you determine the right size solar battery for your property. We take into consideration the type of property you have, the occupancy and the number of solar panels installed.  

A small sized solar battery will only store a small amount of electrical energy so you might have to rely on energy companies to top up. Larger storage batteries can be quite costly, we help you find the most ideal solar battery size tailored to your property.

To help you choose the right size solar battery, we recommend clients assess their energy usage by reviewing monthly bills. You can get a rough idea of your energy usage per day and then we can consider a solar battery with a similar capacity to provide power to your home in Kettering.

How is the size of the solar battery measured?

When considering the usable capacity of a solar battery or the depth of discharge (DoD), the majority of batteries have a DoD of 90–95%. You don't actually want to drain your solar battery completely as this could end up damaging it.

While the size of the solar battery needs to be considered, we advise clients to also consider the power output as a fine balance is needed between the two. A larger solar battery with lower output would be great at storing a larger volume of energy but won't be helpful in supplying your household appliances.

Solar battery installers

Once we’ve established the right size of solar battery, our expert advice is to make sure installation is in easily accessible areas, close to the mains electrical system in a dry location. Ideal spaces include the loft, garage or even utility rooms.

Prior to installation, the team will inspect the status of the solar panels installed and a device called the inverter to make sure it is compatible with the solar battery.

The inverter converts DC or direct current which is the form of electrical energy made by your solar panels into AC or alternating current, we actually use AC current in our homes to power our electrical appliances.

DNA Father & Sons Electrical in Kettering

The team at DNA Father & Sons Electrical are specialists in solar panel and solar battery installation. We are familiar with some of the popular solar battery manufacturers and only use MCS approved products.  

Worried about what size solar battery you need for your property in Kettering? DNA Father & Sons Electrical are a reputable trader with years of experience and skill. Get in touch with us today. 

Solar Battery Storage Systems
david
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