Tesla powerwall battery reviews

Based on 382 ratings Aus Ranking

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About Tesla, Solar Batteries

Tesla solar batteries review

Tesla, Inc. was founded in 2003, originally as Tesla Motors. Tesla is headquartered in the USA's San Francisco Bay Area, with office locations around the world (including Australia).

After cutting its teeth on electric vehicle development, Tesla then expanded into commercial and home battery storage. The company arrived on the home energy storage scene accompanied by great fanfare with the Tesla Powerwall battery back in 2015, which was followed by the Powerwall 2 in 2016.

Tesla has grown into a huge company in terms of market capitalisation - a whopping USD $143.6 *billion* as at late January 2020. 

Anyway, back to batteries - the following are some basic specifications of the Powerwall 2:

  • Usable Capacity: 13.5 kWh
  • Power: 7kW peak / 5kW continuous
  • Dimensions: 1150 mm L x 753 mm W x 147 mm D
  • Weight: 114 kg
  • Warranty 10 years

The Powerwall is produced in the Tesla Gigafactory in Nevada USA, which also manufactures Tesla Model 3 electric motoers and the company's commercial/utility storage solution, the Powerpack.

Pricing And Supply

Supply of the Powerwall 2 was an issue for quite a while in Australia, and then there was a major price rise in 2018 - followed by a not so major price decrease in 2019. So, Australians have had it a little rough with the Powerwall, but its high profile through extensive media attention have seen plenty installed here and interest remains strong.

The cost of Powerwall 2 per warranted kilowatt hour (see below for notes on warranty) is around 31 cents - not the cheapest, but far from the most expensive of the systems we have listed on our battery comparison table.

Blackout Capabilities

The Tesla Powerwall 2 is an AC Coupled battery that comes with the necessary hardware (Tesla Gateway) to provide blackout protection, backup and off grid functions.

Powerwall's "Unlimited Cycles" Warranty

Tesla offers a 10 year "unlimited cycles" warranty, but this only applies to solar self-consumption and backup use. Any other application (such as participating in a Virtual Power Plant) or combination of applications sees the warranty cover drop to 3,200 cycles – about eight years’ worth if cycled once a day.

Reliability Testing Results

The Canberra Battery Test Centre has been putting the Powerwall 2 through reliability testing. The test battery arrived with a fault and later developed another that resulted in it being replaced.  Results published in September 2019 indicated capacity estimated at 96% after 640 full cycles.  If  maintained, the Powerwall 2 will stay well within the minimum capacity provided by its warranty.

While not perfect (and Tesla hasn't been overly fond of us pointing out issues), as far as home solar battery storage goes at this point in time the Tesla Powerwall 2 is probably a good choice among what is available.

Telsa is great at marketing, but how is the Powerwall viewed by those who have one installed? What about after sales service and support? We're inviting Australian Powerwall owners (whether they have the original or Powerwall 2 model) to leave their rating and review here.

Tesla Solar Battery Reviews

Bought From: G & A Martin Electrical Contractors Show additional information
I had an existing solar installation with one Tesla Powerwall 2 battery from 2019. The features of the Tesla Powerwall software keep improving significantly over time. It integrates well with my Tesla electric vehicle. The new contracted work involved a second Powerwall battery installation and it is now installed and operating seamlessly with the existing.
Bought From: Innovate Energy ACT
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the 13.5 kwh battery covers our usage in the peak period most nights a lot of thi is with the ac going
Bought From: Green Star Solar Pty Ltd
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Bought From: Goliath Solar and Electrical Show additional information
Bought From: G-Store Show additional information
Bought From: Goliath Solar and Electrical Show additional information
Bought From: Smooth Current Electrical Pty Ltd Show additional information
Bought From: JWS Electrical Services Pty Ltd Show additional information
Bought From: All Green Environmental Solutions Show additional information
Bought From: Living Energy Solutions Outer Show additional information
Bought From: PTE Solar and Electrical Pty Ltd Show additional information
Tesla battery delivers good performance and online app provides live data on generation, storage and home usage. Best feature.
Bought From: Replenishable Energy Pty Ltd
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Bought From: Solargain NSW Show additional information
The settings for the battery can be controlled and monitored via an app that has a great looking user interface and useful features. When we lost power shortly after installation, the battery kicked in seamlessly - we were not aware until a message from the app alerted us. Battery capacity is limited (don't expect a fully charged battery to last the night without significantly changing normal usage of appliances and lights etc) but overall it is still worth the peace of mind for emergencies.
Bought From: Smart Energy Answers Sydney O
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Bought From: Koala Solar Show additional information
Bought From: Koala Solar Show additional information
Bought From: NRG Solar - National Renewable Group Show additional information
Bought From: NRG Solar - National Renewable Group Show additional information
Bought From: Soltek Energy Show additional information
Bought From: Natural Solar Show additional information
14kwh battery
Bought From: Solargain SA
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The battery (Tesla PowerWall 2) was not part of this sale, but I have been using it for the past 4 years+. It meets the demands of our house and has helpled to ensure that I am not using grid imported energy save for the occassions when I have to use my A/C.
Bought From: Green Solar Energy NSW
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Bought From: Lightning Solar & Electrical - Melbourne Show additional information
Bought From: Green Solar Show additional information
Bought From: Class A Energy Solutions Show additional information
Bought From: Natural Solar Show additional information
As expected.
Bought From: My Energy
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We are now not buying any power from the grid.
Bought From: Class A Energy Solutions
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Running perfectly, update in a few months
Bought From: Sure Solar Pty Ltd
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Only had it running for 5 days and its awesome. No grid usage and seeing it soak up all that generated solar is so satisfying. Currently running in self-powered mode and its great to be using what we generate from solar at night time.
Bought From: Essential Solar Orange
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The very best.
Bought From: HDC Electrical and Solar F
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The battery is the secret sauce to our solar setup. It doubles the effectiveness of our rooftop generation, it gives us around 1h blackout relief (at the settings we’ve chosen), the monitoring app is brilliant. It’s near silent, dependable, and I’m really pleased we’ve got it. If someone was even half considering the purchase of a battery as part of their solar setup, I’d recommend it very highly, particularly if you are eligible for a government rebate.
Bought From: Lightning Solar & Electrical - Melbourne
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The Tesla app is great. For the first time we can monitor exactly how much power we are using in real time. If we turn the oven on, we can see the no of kW being used right now. And if the sun is shining and the battery is compensating for cloud, we can see it! Once we learn our usage patterns, we should be able to make change for the better...
Bought From: Everlite Electrical Pty Ltd
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Great App for monitoring
Bought From: Smart Energy Answers ACT
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Bought From: Koala Solar Show additional information
Bought From: NRG Solar - National Renewable Group Show additional information
Bought From: Lightning Solar & Electrical - Melbourne Show additional information
Tesla monitoring App shows how power is flowing. The battery kicks in at night, and even runs some air conditioning all night without reliance on the grid. It still has some reserve in the morning and quickly charges up again as soon as the sunlight hits the panels.
Bought From: Sunstak
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two out of three batteries failed after 5 years.
They do not make power-wall V 1.0 any more and new power-wall will be incompatible with my system.
Bought From: Bradford Solar Sydney
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Bought From: Natural Solar Show additional information
Bought From: Sunrise Power Solutions Show additional information
Bought From: Natural Solar Show additional information
Bought From: Natural Solar Show additional information
I get a bit of dirty power around my area, so it's great to have the confidence that I'm always on, no matter what.
Bought From: Solaray Energy Z1
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Bought From: Natural Solar Show additional information
The fact that I'm not truly in control of the product that I purchased outright - because it is a Tesla and they have complete unrevokable remote control over it at all times (it has a mobile phone cellular modem in it that allows it to talk to Tesla to receive commands over the 4G internet even if you block it on your home wifi) isn't very consumer-friendly, but other than that it is a great product
Bought From: Goliath Solar and Electrical
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Can't wait to add a second battery.
Bought From: Jet Solar PV and Battery
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Would like to have more control via the app. For example, ability to set a schedule for reserve power percentage depending on time (I need a bigger reserve at 8pm vs 5am). Ability to trigger manual discharge to grid. Ability to pause charging and export all solar to grid (when solar price is high).
Bought From: Solar Wholesalers
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Working well
Great app
Bought From: Goliath Solar and Electrical
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Very happy to have chosen to add a battery. There have been no problems with the Tesla battery, the app is easy to use, can be viewed on my phone when away from home, and I don't require power from the grid (although I am grid connected). No power bills, and a decrease in gas use due to hot water heating by solar electricity.
Bought From: Linked Solar
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