Will your battery operate effectively in hot weather?

Many people don’t understand the effect that ambient weather temperatures have on the life of their battery Temperature effect on battery lifeand it’s a characteristic that isn’t often talked about. The optimum temperature for most batteries to operate at is around 25°C and this is the temperature all battery testing is performed at. When temperatures vary, either up or down their is an effect on the performance of most batteries.

When the temperature starts to fall  below about 15°C, depending on the battery chemistry, the electro-chemistry of the battery becomes sluggish and doesn’t perform as well. In fact, very few batteries operate below 0°C. This is relevant in many countries in Europe, the USA or Canada but not as relevant in Australia.

What is more relevant to the Australian market is the other end of the scale with the hot weather temperatures, particularly those of 40°C or above. Over 35°C, again depending on the battery chemistry, the battery itself will start to degrade. This is why many batteries need to be kept in an air-conditioned environment which adds to the ongoing running costs of the battery and is something that needs to be taken into account when considering the LOC or lifetime cost of a battery.

When considering the temperature that the battery is to be used in you must also take into account where the battery is to be stored. A battery stored inside a metal garage will in fact often get hotter than one that is stored outside.

The FIAMM SoNick batteries or molten salt batteries don’t have the same temperature limitations as most other batteries as they are designed to operate at elevated temperatures. In fact they have an operating range of -20° to +60°C which makes them a much better alternative to other batteries, particularly in hot environments. In Australia, we have extreme weather conditions and even in a garage in suburbia, a common place for housing a battery, the temperature can often exceed 40°C.

The FIAMM SoNick batteries are the only batteries that will really work in temperatures over 40°C without having any detrimental effect to the batteries longevity. Although other batteries claim to be able to operate at the 40°C mark, the fact they will deteriorate when operating around this temperature and will have a much reduced lifetime reduces their suitability.

The wide temperature range of operation makes the Sodium Nickel battery a perfect battery for hot remote areas or areas that are bushfire prone. Other batteries stop working at around 40°C whereas the FIAMM battery continues to work to at least 60°C and doesn’t need cooling. For example the lithium ion batteries that are currently receiving a lot of market attention from Tesla, only have an operating range of around 5 – 35°C, which means they will not operate on many hot days in Australia and even on cooler days if they are not housed in a cool enough environment.


If you live in a hot environment and recognise the value of having a battery that can handle higher temperatures, please visit our website athttp://gridedge.com.au or feel free to contact us for more information at admin@grid-edge.com

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