Compare Batteries.

AC Coupled battery systems come equipped with a battery inverter and require no additional components to integrate with a solar energy system.

DC Coupled batteries require a battery inverter to produce useable energy and can only be used with a compatible hybrid inverter within the Perth Solar Warehouse range.

1) System design flexibility is perhaps the most prominent feature of DC-Coupled batteries.

2) Cost per kWh storage capacity is often deemed more economically viable on an intrinsic level. However, this is subjective depending on the overall function you expect from the system.

Expanding on system design flexibility, for those seeking increased array capacity where network limitations exist, the 33% solar array oversizing cap can be exceeded by integrating DC Coupled batteries while claiming STCs on the additional solar array capacity. 

Therefore, single-phase installations limited to 5 kW inverter capacity can reap the benefits of up to an approximate 10 kW solar array as all available units generated from the array isn’t clipped by the inverter but rather stored. A helpful power expansion method that also applies to network-limited 3-phase energy systems.

Limited integration options. Here’s why. It all depends on the inverter you have installed as to the connected battery options available on the DC side of the inverter.

It’s worth noting that inverters with a DC Coupled battery input function can still accommodate an AC Coupled battery such as Tesla Powerwall 2.