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front view of Deye 20kw Hybrid Inverter 3Phase

Deye 20kW/40kWp SUN-20K-SG05LP3-AU-SM2 3Phase – 48V Battery Hybrid

Original price was: $6,999.00.Current price is: $5,000.00.

The DEYE SUN-20K-SG05LP3-AU-SM2 is a 20kW three-phase hybrid inverter with 48V battery support, dual MPPTs and up to 350A charging/discharging current. Supports AC coupling, generator input and expansion up to 10 parallel units.

SKU: SUN-20K-SG05LP3-AU-SM2 Categories: , Brand:

Description

The DEYE SUN-20K-SG05LP3-AU-SM2 is a 20kW three-phase hybrid inverter for large residential and commercial solar systems. It combines solar generation, 48V low-voltage battery storage and grid interaction, with support for backup power and system expansion.

Dual MPPT tracking, AC coupling and diesel generator support make it suitable for new installations and solar system upgrades. The inverter supports parallel operation of up to 10 units for on-grid or off-grid systems.

Key features

  • 20kW rated three-phase AC output
  • Low-voltage battery compatibility: 40–60V, with up to 350A charging and discharging current
  • Dual MPPT trackers, with 32kW maximum PV input power and 40kW maximum PV access power
  • 100% unbalanced output across phases; maximum output per phase is up to 50% of rated power
  • AC coupling for retrofits and diesel generator input for additional energy storage
  • Parallel support for up to 10 units on-grid or off-grid
  • IP65 enclosure, intelligent air cooling and a 10-year warranty
  • Grid regulation: AS/NZS 4777.2

Specifications

ModelSUN-20K-SG05LP3-AU-SM2
BrandDEYE
Rated AC output20,000W, three phase
Battery voltage range40–60V
Maximum charging / discharging current350A
Maximum PV access power40,000W
Maximum PV input power32,000W
Maximum PV input voltage800V
Start-up voltage160V
MPPT voltage range160–650V
MPPT trackers / strings per tracker2 / 2 + 2
Rated AC voltage230/400V or 240/415V
Maximum continuous AC passthrough70A
Maximum / Euro efficiency97.6% / 97.0%
MPPT efficiency>99%
Ingress protectionIP65
Dimensions (W × H × D)456 × 750 × 268.5mm (excluding connectors and brackets)
Weight51.9kg
Warranty10 years

Installation: Must be installed by a licensed electrician.

See the DEYE manufacturer product page for model-family resources and technical details.

Additional information

Weight58.2 kg
Dimensions98 × 64 × 42 cm

Deye SUN-20K-SG05LP3-AU-SM2

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Deye SUN-20K-SG05LP3-AU-SM2


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Real customer experiences

What our customers say

14 Google reviews preserved from our current and previous profiles.

4.6/5 Combined record across 20 reviews
Tim Stokes
Awesome service. Very knowledgeable. I have bought a number batteries from them and great experience each time.
Robert Robins
Purchased a Growatt Spf5000es inverter, pricing was very competitive and service was great. Highly recommend
Bruno Drinovac
Purchased a Deye inverter from LiFePo4 in June 2026. I am pleased to say that the inverter has been running perfectly with no issues for the last 1½ months. It has been installed into an off-grid system on a very recently built granny flat. This inverter was ideal for our situation and was easy to set up. The 2 trackers were very handy as we needed to deal with 2 different sets of strings operating at 2 different voltages. It certainly looks like a very well designed and robust inverter and will hopefully last us many, many years. If and when we need to replace the inverters on the main house, we will certainly be looking at using Deye.
LiFePo4 provided free delivery, which was very quick, arrived in only a couple of days. They sent me an email checking on how we were going with the installation and offered assistance if we needed it. Excellent Company to deal with and I would purchase from them again in future.
Read all 14 preserved reviews
grantley weller
Been buying batteries from LIFEPO4 Australia for years, always A grade! Great to deal with. Great after sales support. Recommend highly.
Russell Vosseler
Mark and the team have done a great job finding the best solar and battery solution for my house, my parents house, and also friends' houses.
Their batteries are top quality, not like the cheap and nasty ones you find with "special low deals". Best to pay a little extra and get quality products.
Their aftersales service is exceptional with continual support after installation. Mark had provided guidance months after installation to maximise the production of my inverter, and continues to provide valued suggestions even now. 😀
Ken Baker
just received my 30 jinko panels this morning...from initial enquiry to delivery in metro adelaide was 4 days!...on top of that LifePo4 beat the other quotes on price so needless to say I am very happy with the purchase. highly recommend
Steph G
I can’t speak highly enough of Mark at LiFePo4 Australia – they’ve now saved our motorhome adventure twice!
The latest drama hit when our battery failed mid-trip, leaving us in a power pickle. Even though it was outside business hours, Mark jumped on the phone and organised a replacement battery with lightning-fast turnaround.
This is the second time Mark has gone above and beyond for us – always friendly, knowledgeable and genuinely committed to getting you sorted. Couldn’t recommend them enough.
Response from LiFePo4 Australia

Thanks Steph. I'm glad we could assist. The cells you picked up before finding us at LIFEPO4 AUSTRALIA might have been B grade. We are glad we could help out with the 2 cells so far. If any of the others drop out, I'll send out replacements as quickly as we can. Enjoy your travels

Peter Demol
I had an excellent experience buying components to assemble 2 battery packs. Mark is extremely knowledgable about the products he sells. He answered all my questions, prices are excellent, and when there was a potential issue, he went over and above by supplying extra products at no extra cost. Shipping halfway across the country to a rural area took only 3 business days which is insanely fast. I am totally happy with my new batteries and with Mark's excellent customer service. After 10 years of FLA batteries, finally going to lithium technology is heaven. Thanks again Mark. Very happy customer.
Vicki Wattus
Awesome customer service, Mark went above and beyond in sorting my order when we ran into a few snags with it. I would recommend this company to anyone who values good price, service and a great customer experience.
Response from LiFePo4 Australia

It was my pleasure Vicki, we love helping out especially those who need a little bit of help. We hope your get years of service from the Victron MPPT and Jinko 510W solar panel, thanks for you patience over the weekend while we arranged the shipping for the panel to the depot nearest you. The $200 we saved on shipping, was well worth the delay over the weekend. Safe Travels Mark

Ray Carson
Absolute legend of an owner great 10 star customer service and product and knowledge to match..!!!
Not just a salesman...anything but absolute legendary service and knowledge to suit..
T R
Cells arrived, a bit of a delay. But overall we'll priced and packaged.
garry miille
Mark knows what he is talking about when it comes to batteries. Great pricing and very helpful too. Just a great experience all round.
Dapper Rausimen
I totally agree with the other 5 star reviews and can highly recommend buying lithium cells from this business. I received my order of 72 automotive MB31 batteries quickly and I am very impressed. All the cells were within 0.01 of a volt so didn’t require balancing or top charging before installing. They are the real deal A+ automotive grade EVE cells as advertised and not B grade rubbish some online sellers are supplying. Mark actually answers the phone if you need to discuss anything before purchasing and is one of the few people I have found selling lithium batteries that actually now’s about how to install and set voltage settings in the BMS’s he sells.
Elliot C
Super helpful gentleman. I barely prompted him and he gave me plenty of important and useful information. Best customer service I have had in as long as I can remember.

Originally published across our current and previous Google Business Profiles and preserved locally. The combined rating uses the recorded review count and displayed average from each profile. These reviews describe experiences with LiFePo4 Australia generally and are not necessarily about the product shown on this page.

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