Lithium-ion batteries are a newer form of battery storage, they can be discharged deeper and have generally longer lifespan compared to lead-acid batteries, of around 13-18 years.

  • Higher energy density so it can store more power relative to its size
  • Do not require as much maintenance as lead acid batteries
  • 80% depth of discharge
  • 95% battery efficiency
  • Average warranty period Is 10 years.


They are commonly used in vehicles, lighting, UPS systems, and energy storage applications. It contains a mix of lead dioxide, sulphuric acid and water. It creates a chemical reaction that can store and output electricity.

  • Known for their reliability
  • Have a proven track record of several decades
  • Relatively lower costs than other batteries
  • May take up a lot of space and may emit hydrogen gas
  • Have a depth of discharge of 15-30%
  • 80-85% battery efficiency
  • Generally have a lifespan of just under 5 years.


Gel Batteries are valve regulated lead-acid (VRLA) batteries that do not release gas. Gel batteries keep the electrolyte suspended in a gel rather than a fiberglass matt.

  • They are sealed, maintenance-free
  • 20-40% depth of charge
  • 80% battery efficiency
  • Have a lifespan of up to 12 years
  • Viable option for the budget minded for their reliability and low cost

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At Natural Technology Systems, we strive to provide affordably priced solar to the community of South Australia, our priority is to provide quality service and be a provider that Adelaide businesses and residents can trust and rely on.

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