If you are looking for a battery solution, you have three main options:
- You have solar, use grid power, and want a battery for solar self-consumption at night: K32A Lithium Range.
- You occasionally have blackouts, and want a battery for backup power: K32A Lithium Range or K32C AGM Range.
- You are offgrid, or want to disconnect, so need a remote or offgrid system: K32 Lithium Range or K33 Lithium Range.
On-grid solar self consumption: K32A Range
You need about a 5KWh battery to cover average night time consumption, and about 4-6KW of solar to recover the battery the next day with some to export to the grid.
![](https://www.ecocool.com.au/store/wp-content/uploads/2022/06/Circuitrs-1024x897.png)
Your total solar generation depends on the season, where you live in Australia, and the solar orientation. A good energy system designer will give you a graph of annual generation and consumption that looks a bit like this, showing average solar generation and power use, month by month: (For explainers of energy terminology see our Energy FAQ)
![](https://www.ecocool.com.au/store/wp-content/uploads/2024/01/Solar-Graph-1024x493.png)
All you really need to remember is:
- A 5KWh battery is enough for average night power use
- You don’t even need that, once the battery is empty you go back to grid power
- Nighttime battery power used comes from solar, its wasteful to charge from the grid
- So batteries makes sense if your solar system allows a bit more to store extra for night
If you think you could use our on-grid K32A lithium battery contact us below, for a chat. Or go to the K32A range here, and select a model that suits. You can also review our energy calculator ‘here’, to get that solar/battery/grid balance just right, to choose a battery.
Batteries for Backup Power: K32A & K32C Range
Sometimes having a battery is also about backup power, for blackouts. You will need a battery which can remain on when the grid is down, or ‘island’, like our K32A range. Or you might just want a small or larger UPS type backup power system, which only delivers power when the grid is down, like our K32C range.
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Generally, you have to decide what level of power you want when the grid is down, and that comes down to 3 main aspects:
- The size of the battery: 5KWh will last about 10 hours, while you are using 500W of power, the larger the battery, the longer the backup
- The size of the battery inverter determines the upper limit for your electrical loads, too small and it will overload when you use large loads like ovens, so 3-6KVA is typical
- The number of circuits that the battery backs up, is it one power circuit or two, or most circuits, or all of them?
Take a look at the K32A range, for on-grid solar self consumption and power backup. And our K32C range for infrequent power backup, our larger K32C’s offer budget solar self consumption as well as backup.
Remote Buildings & Offgrid properties: K32 & K33 Range
Transportable buildings like site offices, tiny homes and container-buildings need packaged power systems like ecoCool’s K32 range:
- High Quality Lithium Battery
- Upgradable in 5KWh modules
- IP Rated Enclosure IP54
- Quality Victron Inverters, Cerbo GX, Victron Display options
- Generator inlet, 10/15A Plug Outlet
- External Access DC isolators & AC breakers
- Energy Management dash boards: E30 / Victron Touch
- Designed & Assembled in Australia
- MPPT included as standard
- Victron ecosystem options
For offgrid residences large and small, try ecoCool’s excellent packaged K33 range, with similar features, and more solar options: K33 offgrid range.
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