Off-Grid Energy Australia uses a range of battery technologies from leading Australian and International suppliers – that are designed specially for home battery storage applications. The right battery technology for you will depend on your situations and requirements. Batteries must be carefully sized and cared for to ensure a long system life and worthwhile investment.
Scroll down for information on lithium-ion, sealed gel, flooded lead acid, flow, and saltwater battery technologies.
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Lithium-ion has a number of advantages for hybrid storage applications in particular. The highest quality lithium-ion batteries need to be used to ensure absolute safety and reliability. These batteries have a higher energy density (lighter & smaller than lead acid batteries), and have the ability to regularly deeply discharge. Reputable lithium-ion batteries would be expected to last +15 years provided they have a good battery management system and remain at a good temperature. The batteries are relatively new to large stationary applications (such as home storage) and no applicable Australian Standards have been developed yet. Their high cost and low autonomy (the ‘fat’ needed at times of low energy input or increased demand) means that they are still not ideal for off-grid applications.
The range of lithium battery options on the market is huge – a selection of these can be found on the Battery Finder.
A proven battery chemistry in off grid storage applications, VRLA battery banks are sealed, require less maintenance than wet cell batteries, have superior charge current handling, lower installation cost, and high recharge efficiency. Using a reputable brand, correct sizing, suitable housing, and appropriate battery management, VRLA battery banks have shown to last up to 15 years. The high autonomy (back up storage needed at times of low energy input or increased demand) of the VRLA batteries still makes them the ideal solution for off-grid applications.
Flooded Lead Acid Batteries are a lower initial cost proven performer in standalone applications that are properly sized and regularly maintained by experienced persons. Wet cells need regular maintenance in the form of checking the electrolyte level, adding distilled water to prevent drying out, regular cell top surface cleaning, and regular boost charging to overcome acid stratification. Under Australian regulations wet-cells must also be segregated from all other equipment, requiring their own storage enclosure to meet strict safety guidelines.
New batteries are coming onto the market almost weekly, so keeping track of them all can be tricky. To check out an updated list on battery products, check out the Battery Finder.
On Grid Battery Storage Systems, also sometimes referred to as Hybrid Battery Systems are a great option if you already have a grid connection but are looking for greater energy independence
There are so many options out there for on grid, and off grid storage systems. The right system for you will depend on your energy situation, your location, and what you want to achieve from battery storage.
Off-grid power systems supply electricity to properties that are not connected to the public electricity network. These systems are often referred to as “stand-alone power systems” (SAPS).