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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 battery Model will give you the amount of kilowatt hours (kWhs) you can expect to get out of that model battery.

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 and this is when a battery can provide you with power.

The next lines gives you an idea of how to use the table below to identify the size battery needed to cover the average 4-person family without solar on their roof.

Looking down the table you can see the both the L500ah @ 48V and the L1000 @ 24V both provide 19.2kWhs which can provide the 16-20kWhs per day a typical 4-person family uses.


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, Australia over the year. This will be lower in Melbourne and Hobart but maybe higher in Brisbane and Darwin.

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 the 70% of power used at night which is between 11.2 - 14kWhs for the average 4-person family.

The battery size options for 11.2 - 14kWhs in the table are:
L1200 @ 12v (11.2kWh)
L750 @ 24v (14.4kWh) or the
L300 @ 48v (11.2kWh)

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

    Note: Information provided in the columns from "Suggestion Guide" to "Heat Pump" in this table is to be used as a guide.

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 Standard Electric Hot Water Clothes Dryer Electric Cooktop Oven Dishwasher Electric Hot Water Heat Pump
L1200 1200 48V 57.6 46.08 8 people large loads Yes Yes Yes Yes Yes Yes Yes
L1000 1000 48V 48 38.4 6 people large loads Yes Yes Yes Yes Yes Yes Yes
 L750 750 48V 36 28.8 5 people large loads Yes Yes Yes Yes Yes Yes Yes
 L500 500 48V 24 19.2 4 people large loads Yes Yes Yes Yes Yes Yes Yes
 L300 300 48V 14.4 11.52 2 people large loads Limited use Small Yes Induction Yes Yes Yes
 L200 200 48V 9.6 7.68 1 person large loads Small Limited use No No Small Induction Very limited use Small Limited use Yes
L1200 1200 24V 28.8 23.04 8 people medium loads Yes Yes Yes Yes Yes Yes Yes
L1000 1000 24V 24 19.2 6 people medium loads Yes Yes Yes Yes Yes Yes Yes
 L750 750 24V 18 14.4 5 people medium loads Small Small Small Limited use Induction Yes Yes
 L500 500 24V 12 9.6 4 people medium loads Small No No Small Induction Limited use Small Yes
 L300 300 24V 7.2 5.76 2 people medium loads Small No No Small Induction No No Yes
 L200 200 24V 4.8 3.84 1 person medium loads Small No No Small Induction No No Yes
L1200 1200 12V 14.4 11.52 8 people small loads No No No Small Induction No No Yes
L1000 1000 12V 12 9.6 6 people small loads No No No Small Induction No No Yes
 L750 750 12V 9.0 7.2 5 people small loads No No No Small Induction No No Yes
 L500 500 12V 6 4.8 4 people small loads No No No Small Induction No No Small
 L300 300 12V 3.6 2.88 2 people small load No No No No No No No
 L200 200 12V 2.4 1.92 1 person small load No No No No No No No

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