Battery degradation

Energy storage batteries come in a variety of different sizes and weights and each have different characteristics.  Here is a comparison of the degradation after 10 years of batteries currently available in Australia with comparisons of size for a similar sized  system from other battery technologies.

You can see from this image that different battery technologies have different degrees of degradation over their lifetime. You need to take this into account when deciding the best battery for your needs. If a battery seems cheaper to purchase upfront but has then degraded significantly after a couple of years and may be down to only 50 or 60 % of original capacity after 10 years this will significantly affect how much power you can draw from that battery.

This degradation is also what may make it difficult to add additional batteries to an installation after a few years. In many cases with lead acid and lithium ion batteries you may need to purchase a new system if you want to add extra capacity.

This degradation is well known with lead acid technologies that have been around for a number of years and can be very dependent on many factors including the temperatures that the battery is exposed to as well as the depth of discharge of the batteries  over a period of time.

Lithium ion battery technologies have not been around for long enough for the exact effects of real life usage to be understood but most current lithium ion technologies are expected to have a 50 – 60% degradation over their lifetime and lithium is very temperature sensitive so temperature operating conditions will also affect their performance.

Current claims for these new technologies are generally at factory conditions with a temperature of 25 degrees. Real life may change these usage figures considerably and has already been seen in a number of battery technologies.

Another thing to consider is how much power you can actually draw from the battery at any point in time. Our SoNick battery can draw 150 amps for 4 hours continuously but some other batteries are very limited in the amount of power that can be used, maybe only with enough to boil a kettle and little more.

It is critical that you do your homework and understand how you want to use your energy storage battery and understand the capabilities of different battery technologies.

GridEdge’s SoNick battery doesn’t degrade over the life of the battery like many lithium ion and lead based batteries do. The SoNick battery non-toxic and is is 100% recyclable and all parts of the battery are accounted for in its recycling program.

Also the SoNick battery has been used in installations around the world since 2010 and as such figures are based on real life operating conditions and so are proven to be realistic.


If you would like to know more about getting safe, reliable battery storage for your own home, business or micro-grid visit us at

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