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batteries for solar panels

Solar Panel Batteries

Solar panels together with batteries for solar panels don’t just help the environment; they also make excellent use of our planet’s natural resources. However, if you don’t utilize the power they generate straight away, it will be wasted.

A household wastes around half of the money-saving, completely renewable energy on a regular basis.

You may reduce an extra 0.42 tons of greenhouse gases and save another £186 per year on your energy bills by buying a solar battery.

You can also use this storage device to help you become more energy independent, which might mean the days of worry and anxiety over price increases and power outages are behind you.

If you want to add a solar battery to your system, here’s everything you need to know.

What is a solar panel battery?

Solar batteries are a type of battery that allows you to store the additional power generated by your solar panels so you can use or sell it at a later date.

The energy supplied by solar power only becomes useless if you or the people whom you live with are at home and utilizing electricity every minute of every day.

Solar batteries are virtually always 50% efficient, so you typically lose half of the power generated by your solar panels when they’re charged. You won’t have this problem with a solar battery, because it can store energy for later use. Solar batteries are 70 to 80 percent efficient in storing electricity from sunlight over time and temperature fluctuations.

The two most common types of batteries are the less efficient lead acid model and the superior lithium-ion battery, which provides faster charging and a greater capacity.

How long do they last?

Solar batteries generally come with a 10-year warranty and typically last 15 years, although they may function at a somewhat reduced capacity for the final five years.

They must go through many charging and discharging cycles on a daily basis, just like your phone’s battery.

What does it mean ‘depth of discharge’?

As your solar battery cycles, its ‘depth of discharge’ (DoD) gradually decreases. The DoD refers to the percentage of a battery’s capacity that is actually usable

If you have a 100% DOD battery with a 10 kWh capacity, for example, you should only utilize 8.5 kWh at any one time. If you continuously draw all of the battery’s energy, it will wear down the battery considerably faster.

You can, nevertheless, make a difference. Maintaining your battery correctly and keeping it from getting too cold or hot will ensure that it works effectively.

Solar batteries have advanced tremendously in recent years, and technological advancements are continuously extending their longevity and performance, which implies they’ll only get better.

What type of batteries for solar panels should I buy?

You must choose the chemical make-up and electricity current of your solar battery after you’ve decided to purchase one. It’s a good idea to talk to several professional installers about this before making a choice.

Lithium or Lead?

Flooded or sealed lead acid batteries are the two types of such batteries.

Flooded lead acid batteries have a somewhat longer lifespan than sealed lead acid batteries (5-7 years vs 3-5 years), but they also need more care.

The flooded lead acid battery is ideal for those seeking the most cost-effective form of solar energy storage.

The most costly solar battery is a lithium-ion battery. They’re tiny (about half the size of a lead acid battery), and their lifespan is typically more than 10 years.

These have a better energy efficiency, faster charging speed, and greater storage capacity. You will certainly get your money’s worth out of one of these.

Should I go with AC or DC?

It’s either/or. If you’re putting a solar battery in addition to solar panels, choose a DC (direct current) battery that connects directly to the panels and doesn’t need an inverter.

If you already have solar panels, you’ll need an AC (alternating current) battery. This is considerably easier to retrofit to an existing system since it is linked via the electricity meter, but it also requires a second inverter.

When it comes to selecting and installing a solar battery storage system, you should always seek expert assistance.

Can I retrofit batteries for solar panels to my existing system?

If you already have solar panels at home, it’s rather simple to convert them into a solar battery.

If you’re using a solar panel inverter, the solar battery must be coupled to it either via AC or DC. This is determined by the type of inverter that your solar panels are connected to.

If your solar system features a micro inverter, the solar battery must be AC-coupled. This is the less expensive of the two choices (since you won’t need to replace the inverter), and installation takes only a few hours.

Because it needs to be converted twice, this technology contributes to more energy loss over time.

If you don’t have a microinverter, you’ll need to switch your old inverter for one that can work with your solar battery.

This is more expensive up front, but it only involves changing the solar-generated electricity once, so there is less energy loss in the long term.

Call us to find out more

If you are considering adding batteries for solar panels to your system, drop us a line or alternatively give us a call on 0800 0096625 to find out how we can help you save money and become more energy efficient.

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