Growatt inverter review - Updated July 2025

 

There are many 'budget' inverter and battery brands available in Australia.
By 'budget' I mean a few hundred dollars cheaper for an inverter, or often a thousand (or more) cheaper with a battery.
There is always some sort of a compromise though with a lower price, of course.
It may fail more often and it may not last much longer than it's warranty.
The best brands of inverter and battery might run for 15 or 20 years.
So might a budget brand, but it's less likely.

Growatt are, in my opinion, comfortably the best of the 'budget' brands for a number of reasons.

(1) Their latest batteries share some of the features found in the very best batteries.
(2) Their inverter product range is impressive.
(3) Their support, especially here in Perth, is really good.
(4) We have installed Growatt products for 14 years so we know what to expect.

Growatt inverters
2 x 5kW single phase hybrid inverter models that work with Growatt high or low voltage batteries.
Both have 2 x MPPTs and can take up to 11.44kW of panels (2 x 13 x 440W panel strings) No 10kW single phase hybrid yet.

1 x 10kW 3 phase hybrid inverter that work with Growatt high and low voltage batteries.
3 x MPPTs that can take 2 strings of up to 23 x 440W panels in parallel on each MPPT.
In total though, the maximum panel power it can connect is 20kW.

There's a 15kW 3 phase model with the same 3 x MPPTs and parallels coming soon.
That can connect up to 30kW of panels.

Growatt batteries
APX is their high voltage battery that works with the three phase inverter and one of the single phase models.
Each APX battery is rated at 5kWh with 90% depth of discharge, meaning 4.5kWh is usable.
Maximum 6x batteries in the stack (30kWh rated, 27kWh usable)

Each battery module is parallel connected to the next and contains a battery optimiser.
That's a couple of high-end desirable features.
They lack the fire extinguishers found in the top end Sigenergy and iStore batteries.

ALP is their low voltage battery that works with the 5kW single phase 'all-in-one' SPH Hub inverter.
Same specs as the APX apart from the voltage.

This review was written by Andrew MacKeith, Solar4Ever service manager since 2011.