Note: Solar Choice is not affiliated with Soltaro batteries or any other battery manufacturer, so our reviews reflect an unbiased assessment of information on their products.
At a Glance: Soltaro Batteries score 2.4 out of 5
Scoring is based on our solar battery scorecard, which is consistently applied to each brand and battery available on the Australian market. This scoring reflects Soltaro’s residential battery systems, including the AIO3 series.
$$$ Price: Based on data from Solar Choice’s network of solar installers, the average price for an installed Soltaro battery is $1,170 per usable kWh, positioning it in the higher-cost price range.
- Company Backing and Trustworthiness (4 out of 5): Soltaro has been operating in Australia since 2016, has a substantial local Australian team, and has maintained a consistent presence in the market. It earns a strong trust score.
- Warranty Offer (3.5 out of 5): Soltaro batteries offer a throughput warranty of 4.1MWh per usable kWh, a 10-year product warranty, and a minimum capacity rating of 70% at the end of the warranty period. These specs rank among the top tier for battery warranty offerings.
- Customer Reviews (0 out of 5): As of now, Soltaro has no verified customer reviews on Solar Choice’s independent platform, resulting in a 0 score in this category.
- Functionality (2 out of 5): Soltaro batteries are IP55 rated, modular, and AC-coupled, but they lack built-in fire suppression and do not support modular battery balancing. This means new batteries added later may be affected by degradation in existing ones, which limits flexibility in long-term use.
Background on Soltaro – Company history
Soltaro Battery Technologies and Model Range
Soltaro AIO2 Battery
The Soltaro AIO2 can be used both on-grid and off-grid as per their datasheet. It is also capable of being used for an on-grid battery backup. This gives the AIO2 the ultimate flexibility for homes and small businesses who need to ensure they don’t lose power when it matters most. Moreover, as the AIO2 incorporates MPPT technology, it will always allow you to get the best out of your solar PV system.
When grid-connected, or connected to a local micro-grid, the Soltaro AIO2 can be connected in parallel. This allows your system to be modular and expandable as your energy storage needs change.
Soltaro AIO3 Battery
Soltaro AIO2 Battery – Key Features
There are a number of features of the Soltaro AIO2 battery worth mentioning:
Solar Battery Efficiency
With a round trip efficiency rating of 97%, Soltaro’s batteries compare favourably against many alternatives in the solar battery market. This basically means that 97% of the energy that is sent to the battery can be used within the home later after the losses incurred from charging the battery and then discharging it.
100% Depth of Discharge
Soltaro batteries offer a 100% depth of discharge which means customers can utilise 100% of the rated energy capacity by taking the battery all the way down to 0%. This is a good feature as many batteries only offer 80% to 90% depth of discharge.
How Much Do Soltaro Batteries Cost?
We’ve reached out to Soltaro for the wholesale cost of their batteries and will update this section when they respond back to us.
Compare quotes from up to 7 installers in your area now.
Soltaro’s Warranty Offer
Soltaro provides a 10-year product and performance warranty for its AIO2-BTLV battery series. The warranty includes two key components:
- Minimum retained capacity:
≥85% of original capacity for the first 5 years or up to 20.5MWh of energy discharged from their 5kWh model (throughput)
≥70% of original capacity for up to 10 years or 37.5MWh total energy discharged - Minimum throughput per usable kWh: 4.1 MWh per usable kWh (which compares well against other brands)
Soltaro may fulfil warranty claims by repairing, replacing, or supplementing the battery, or by issuing a refund based on remaining capacity value.
Key warranty conditions:
- Battery must be registered on the Soltaro portal within 3 months of installation
- Continuous internet connection is required for full warranty coverage
- If not registered or connected to the internet, warranty coverage drops to 5 years and 5,000 cycles
- For off-grid systems, the warranty is limited to 5 years, and a minimum of 10kWh storage must be installed
Soltaro’s warranty does not cover cosmetic wear, damage from external causes (e.g. lightning), or costs associated with removal and reinstallation.
Although Soltaro do have an office in Tullamarine, Melbourne, many customers have reported tedious issues in claiming warranty, some of which have needed to make multiple claims.
Review Soltaro’s warranty document here.
Battery Specifications Soltaro AIO2
| Usable Capacity | 4.5kWh |
| Max. Output Power | 2.56kW charge, 5.12kW discharge |
| Nominal Storage | 5kWh |
| Dimensions (H x W x D) | 54cm x 105cm x 22cm |
| Weight | 79kg |
| Operating Temperature Range | -20°C to 55°C |
| Outdoor/Indoor | Indoor/Outdoor (IP65) |
| Warranty | 10 years |
Pros and Cons of Soltaro Batteries
Pros
- Owned by Australian company and have local representatives
- Impressive 10-year warranty or 10,000 life cycles
Cons
- Limited size options and products
- Shorter company history that most battery brands and are a relatively unknown company
- Many customers and installers have reported issues with the reliability of their batteries which can be reviewed through 3rd party review platforms
So, are Soltaro Batteries worth it?
In our opinion, there is too much noise around the reliability of these batteries. Solar Choice has received complaints from installation companies around the repeated failure of Soltaro’s AIO2 battery. Most of the negative feedback is related to Soltaro’s AIO2 battery. This battery is now superceded by the AIO3 battery, but due to its limited time in the market there is no track record yet to suggest that Soltaro have fixed reliability issues.
Read more product reviews from Solar Choice
Since 2008 our knowledge and sophisticated software has allowed over 300,000 Australian households and businesses to make a well-informed choice on their solar & battery installer.
- Dynamic Connections in Queensland – What You Need To Know - 8 August, 2025
- Best Solar Batteries in Australia 2025 - 29 July, 2025
- Why a big battery could be cheaper than a small battery with the federal rebate? - 19 June, 2025
