Solar Batteries

Everything you need to know about Solar Batteries

Teho Talks Solar Batteries

Solar Batteries get talked about a a lot, but are they really worth it? That is what we will talk about in this guide. 

Since first hitting the consumer market battery technology has come a long way. Prices have also come a long way but are they low enough to get a battery purely for a financial return. 

In this guide we will cover off everything we can to help you make a better decision when buying a battery. 

From Jargon to technical data that should be considered, we will help you make a better battery decision. 

Firstly, we will focus on the most common grid connected style batteries in this article. There are other options available but we won’t get distracted.

In this you will learn:

How Does It Work?

When your solar system has NO battery, any excess power created will be exported to the grid. When your solar system doesn’t create enough energy your home will draw from the grid. It is that simple. 

When you add a battery, the battery ads in between the grid and the solar system. 

When your system creates surplus energy, it will charge that battery and when there isn’t enough power created from your system, say, at night time, your home will draw power from the battery. 

When the battery is charged, the power will then be exported to the grid. When the battery is out of charge, your home will draw power from the grid. 

It is that simple. 

You can over complicate it as much as you like but at the end of the day, that is the most simple and easy way to understand how a battery fits into the solar and grid ecosystem. 

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Types Of Batteries


A very common battery type and used by two of the largest manufacturers LG and Tesla. They charged and discharge exceptionally well. They are quite resilient to changes in ambient temperature and are quite compact compared to a Lead Acid. 

Lead Acid 

One of the oldest and most reliable battery technologies in the world, lead acid is what is used in most common car batteries. They can be sensitive to ambient temperature which can in turn impact their life span. They are a bit bulky and take awhile to charge compared to a lithium-ion however, they are reasonably cheap and there are well set up recycling channels for when your battery comes to the end of its life.

Lithium-Iron Phosphate

Used by one of the biggest (if not THE biggest) solar battery manufacturer Lithium-Iron Phosphate are quite uniquely suited to applications in the world of solar. They have a great lifespan and what is very exciting is, their makeup is considered much less toxic than a standard Lithium battery.

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