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What size battery do I need?

The following information will give you an idea of what size battery you will need.

Please contact our staff if you would like to discuss your energey needs in more detail.

Below is a table of the battery sizes we sell.

Each size will give you the amount of kilowatt hours (kWhs) you can expect to get out of one of our batteries.

Our batteries have a usuable capacity of 80%.

To identify what size battery you will need to power your home the best way is to look at how many kWhs you use on you electricity bill.

As a rough guide, a typical 4-person family uses between 16 - 20kWhs per day. This is generally broken down to 30% during the day and 70% at night. Typically, the 70% is between 5.00pm and 8.00am.

This is when you need a battery to provide you with your power.

If you had no solar panels on your roof then the next lines gives you an idea of what size battery you would need to cover you power usage.

Using the 16-20kWhs per day and using the table below you have a number of choices.
These being: L1000 @ 24v or the L500 @ 48volt both providing 19.2kWhs.


If you have solar panels on your roof, you can reduce the battery size you need.

A typical solar installation is around 6.6kW and on average you will get about 20kwhs per day in Sydney over the year. This will be lower in Melbourne and Hobart but maybe higher in Brisbane and Darwin. Winter does not produce as much daylight hours so this will also lower how much energy they can provide.

Remember solar panels only provide you with power during the day and 70% of your power consumption is done at night between 5.00pm and 8.00am.

This means that a battery needs to be able to provide 70% of 16 - 20kWhs which is calculated at between 11.2 - 14kWhs.
The options from the table is the: L1200 @ 12v, L750 @ 24v or the L300 @ 48v.

If you use gas for heating or hotwater, you can further reduce the battery size you need.

        Note: Information provided in the columns from "Suggestion Guide" to "Dishwasher" in this table is to be used as a guide only.
                 Please contact us to discuss your individual needs.         
Model
         Rated 
 Capacity (Ah)
Volts Battery kWhs Usable kWh @ 80% discharge Suggestion Guide Reverse Cycle Split System Electric Hot Water Clothes Dryer Electric Cooktop Oven Dishwasher
L1200 1200 48V 57.6 46.08 8 people large loads Yes Yes Yes Yes Yes Yes
L1000 1000 48V 48 38.4 6 people large loads Yes Yes Yes Yes Yes Yes
 L750 750 48V 36 28.8 5 people large loads Yes Yes Yes Yes Yes Yes
 L500 500 48V 24 19.2 4 people large loads Yes Yes Yes Yes Yes Yes
 L300 300 48V 14.4 11.52 2 people large loads Yes limited use Small Yes Induction Yes Yes
 L200 200 48V 9.6 7.68 1 person large loads Solar Solar Solar Small induction Very limited use Solar
L1200 1200 24V 28.8 23.04 8 people medium loads Yes Yes Yes Yes Yes Yes
L1000 1000 24V 24 19.2 6 people medium loads Yes Yes Yes Yes Yes Yes
 L750 750 24V 18 14.4 5 people medium loads Small Small Small Limited use Induction Yes
 L500 500 24V 12 9.6 4 people medium loads Solar Small Solar Induction Limited use Solar
 L300 300 24V 7.2 5.76 2 people medium loads Solar No Solar Small Induction Solar Solar
 L200 200 24V 4.8 3.84 1 person medium loads Solar No Solar Small Induction Solar Solar
L1200 1200 12V 14.4 11.52 8 people small loads Solar No Solar Small Induction Solar Solar
L1000 1000 12V 12 9.6 6 people small loads Solar No Solar Small Induction Solar Solar
 L750 750 12V 9.0 7.2 5 people small loads Solar No Solar Small Induction Solar Solar
 L500 500 12V 6 4.8 4 people small loads Solar No Solar Small induction Solar Solar
 L300 300 12V 3.6 2.88 2 people small load Solar No Solar Solar Solar Solar
 L200 200 12V 2.4 1.92 1 person small load Solar No Solar Solar Solar Solar

    The voltage of a battery is important. All electrical appliances need amps to operate.

    The more electrical appliances you need to turn on at once means the more amps you need.

    The higher the voltage of a battery bank, the higher the amps it can provide.

    Meaning a 48volt battery will provide more amps than a 24volt battery and a 24volt battery will provide more amps than a 12volt battery.