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Use the form on the right to send us an email OR phone sales on 1300 795 327. 

46 Main Western Road
Tamborine Mountain, QLD 4272
Tel: 1300-795-327 (Sales)

Technical Support +61 420 684 092

Monday – Friday 8:00am – 5pm
Saturday 8.00am – 1pm

46 Main Western Road
North Tamborine, QLD, 4272

1300 797 327

Deep Cycle Systems is a Lithium Battery manufacturer supplying battery storage systems for marine, recreational vehicles and the renewable energy sector.  


Deep Cycle Systems - Informative Articles.


Paul Tomolowicz

Deciding to purchase a new solar, complete with battery storage is an important investment for your families future.  With rising electricity costs and an ever-increasing instability in the grid, now is the time to take action.  But you may be asking yourself how long it will take for your investment to see real returns? We can show you:

- How to be cash flow positive from your battery/solar investment from day one,

- How to gain immediate savings on your power bill, 

- An option to zero out your power bill all together and hedge against rising electricity prices,

- How to increase your homes value.

We get asked by new customers all the time if we are able to design a solar and DCS battery storage system that not only will be cash flow positive but will be able to achieve a ROI (return on investment) within the initial 10 year battery warranty period.  Our short answer is ‘yes absolutely’.  For example recently a customer – who we shall call Frank, just to make things easier - contacted us from the NSW central coast and posed this exact question.

We thought we would share this case study in a blog to explain how a simple single phase solar and DCS storage system can significantly reduce Frank’s bill by increasing self consumption and reducing reliance on the grid;  

- Frank was averaging 500kWh of electricity usage from the grid per month. With this information we can quickly estimate (500kWh x 12 months) = 6,000kWh per year x $0.30 (electricity tariff) = $1,800 per year in electricity + the daily supply charge of $1.00 per day $1,800 + $365 = approx. $2,200 per year. 

- Frank has been averaging around 18.1kWh per day over the last 12 months  

To significantly reduce the electricity bills for Frank we would be recommending a system that could meet the average daily usage of 18.1kWh + 50% extra to allow a buffer for overcast days and to export a sizeable amount of power back to the grid for a further reduction on the daily supply chargers.

A grid tied hybrid system is a great solution if you intend to only use the grid as backup - think of the grid as being your backup petrol generator but instead of servicing the oil and keeping the fuel topped up, your hybrid inverter will automatically switch over to the battery in the event of a power outage or if you experience continuous overcast weather for several days you will automatically pull power from the grid until the sun shines again.  Of course when you are generating surplus power from continuous sunny days and your batteries are fully charged your hybrid inverter will be exporting back to the grid and you will be getting paid for it to reduce or cover your daily supply charges.

 Now back to Frank.  We proposed the following system:

- 6.5kW Solar Array using quality tier 1 solar panels (many brands to choose from or just ask for our expert opinion)

- 5kW SolaX Hybrid Inverter with 100Amp charger controller (for super recharging of the DCS batteries)

- 40Amp Automatic Transfer Switch (ATS) proving automatic switching of grid and batteries in the event of a grid outage (blackout) 

- DCS PV 5.0W (5kWh of usable Lithium Iron Phosphate energy storage)

This system would be capable of producing a yearly average of around 25kWh per day in this region which is around 50% more than what the customer currently uses being 18.1kWh daily.

Applying some very conservative battery modelling to Frank's site specific address we can see below the daily average power consumption breakdown using a single DCS PV 5.0 and also a DCS PV 10.0 battery.  

With a single DCS PV 5.0 battery around 70% of Frank's electricity usage would be covered by the combination of the solar and battery.  So a minimum reduction of 70% off his current electricity bill.  

With a single DCS PV 10.0 battery around 89% of Frank's electricity usage would be covered by the combination of the solar and battery.  So a minimum reduction of 89% off his current electricity bill.  The larger 10kWh battery would be a much better option for Frank as it will hedge him against rising electricity prices much earlier in the equation.     

In regards to the expected ROI on a fully installed system of this calibre would be less than 7 years, which is well inside the 10 year battery warranty period.  DCS batteries are warranted to be at least 80% original capacity at the 10 year warranty period.  With a lifespan of around the 20 year mark still provides a solid 10+ years of storage after the system has paid for itself.

To top this all off we can have Frank, or any customer up and running within a few weeks along with a no deposit down finance package on the entire system.

Start saving today!  Contact DCS on 1300 795 327 or email and ask us how we can reduce your power bills.