Alt-Tech is a retail, supply-only company. We do not offer installation.

For more on the benefits of purchasing equipment through Alt-Tech and working with a local installer visit this page.

As a supply only company we do not offer a commissioning service. 

We supply off-grid solar power solutions, there are many solar companies that specialise in grid-tied solar installation who can help you meet these needs.

You can find our returns policy here.

We currently do not offer international shipping.

You can find our returns policy here.

Contact us at [email protected] for questions related to refunds and returns.

We currently do not offer international shipping.

You can find our returns policy here.

Free shipping is available on labelled items*

For all other items a delivery charge is calculated at checkout based upon the weight and dimensions of products purchased. 

*Free shipping limitations apply to remote areas

Most of our orders are dispatched within 24 hours after payment has cleared. Once in the hands of the couriers, shipping times are outside of our control, but we are here to help if there are issues with the delivery or courier.

As Australia is a large and diverse country please allow 5-10 business days for delivery. If for any reason the courier misses you on the delivery day, a card will be left for you to call the depot to collect the goods. For a second delivery attempt you may be charged extra freight costs by the courier.

We cannot guarantee door to door delivery for every customer. Buyers in remote areas such as farms, islands, mining camps, small towns, or out-of-towners, etc may need to collect from their nearest freight depot.

We currently do not offer international shipping.

We currently do not offer international shipping.

Free shipping is available to major cities, major regional hubs and to your nearest depot.

If you are in a remote regional area we cannot guarantee shipping to the door. You may need to collect items from your nearest depot.

Panels are usually delivered by the pallet within the solar industry, so when purchasing individual panels they will not come boxed. 

Over 80% of the solar panels we retail are second-life or warehouse seconds. This means that availability of specific panels is unpredictable.

Stock levels listed on the website reflect real-time availability and if levels are lower than your requirements, your best option is to choose a different panel. It could be six months, a year, or we may never receive more of a particular panel.

Second-life panels have been used in a prior application (such as grid-tied rooftop PV) but have been removed with plenty of life left in them. We believe these high-performance products should fulfill their complete functional lifecycle. Panels arrive cleaned and assessed and we provide a five-year warranty because we are confident of their capabilities. 



Warehouse seconds are panels that never made it to their intended application. They have never been pointed at the sun, but may have been shipped around or sat in storage for some time. 


Yes… but it is not straightforward and you really need to know what you’re doing. Having matching panels is most ideal and our team can help you find something that best meets your needs.

We have a Tech Talk that delves into this a little deeper if you want to understand the complexities of mixing panels.

You need a contingency plan just in case anything goes wrong. For example, unexpected bad weather can result in lower solar production which may not meet your power needs. There is always the possibility of some kind of unexpected event or fault even in the best planned system.

Alt-Tech are not responsible if an appropriate contingency plan is not put in place.

This depends on your unique set-up.
If you are planning a new system, think ahead about if you may wish to add on at a later stage and let us know up front.

If you are looking to add to your system, get in touch with our team and we can advise if this will be possible – Contact Us.

Alt-Tech operates an email ticketing system, this allows a written record of communication for both parties and the ability to share photos.

Once the ticket is created you can reply directly to the tech team at any point and they will get back to you as soon as they are available within our opening hours. 

During your initial call a new support ticket will be opened.

You will receive an email notification that a support ticket has been lodged. Please reply to this email providing any additional details and where possible, photographs to assist the tech team in understanding the query.

Our support is conducted through our online ticketing system.
If you have been speaking to a sales team member and the conversation has developed into a support enquiry (e.g. beyond minor troubleshooting) a new support ticket will need to be lodged. 

We have developed our online ticketing system to provide a more effective and efficient service based upon our experience providing product support.

If you have a question regarding installation please contact your installer. 

Alt-Tech is a retail business (supply only), we do not offer installation and are not able to fix installations. 

If you have purchased your item through a third party, please contact them directly for support. 

All support is provided via email.
If you do not personally have an email address, is not unusual for people to use a partner’s, child’s or a friend’s email. We can also add multiple people as collaborators if required.

Time frames for resolution of warranty/RMA’s are case by case dependent. We cannot provide a specific time frame, only updates as they occur.

It is important for us to be able to relay technical information, sometime this can be lost in translation over the phone.

By using email, you can print information out at your convenience wherever you can get a connection and take this to the site of the installation. 

Please leave your Growatt unit in situ and connect the wifi dongle to allow issue diagnosis. 

Out of the box the pairing code is 000000.
If the code has been changed and it is now unknown, it is possible to reset this if the product is physically in front of you. A remote reset is not possible for security purposes.

Every Victron item has a PUK (Pin Unlock) code on a sticker next to the serial number which can be used to change the passcode. You will need the VictronConnect app installed on a smartphone, then you can follow in app instructions to change the passcode. 

The official Victron repair agent for WA is WA Solar Supplies in Osborne Park. 

If the product was not purchased from Alt-Tech or is no longer in warranty from the place of purchase we suggest you contact Gostronics to make an enquiry about repair.

Please note: repairs are often not worth the price of the unit but Gostronics can advise on individual situations. 

The short answer for most situations is no, we do not recommend customers do this. 

Technically it is possible depending on which batteries they are, however there are complexities in creating matching voltages. The correct number of batteries and amp hours is required to make the maths work. 

You can use an isolated DCDC charger for non-isolated applications. This is an expensive option if you do not already own an isolated DCDC charger as non-isolated chargers are cheaper. If you already own one, simply join the two earth/negatives.