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Build out your backup system with powerful expansion batteries. You can combine as many as 4 Tank PRO 4000 batteries per Yeti PRO. This creates a robust backup system that can run essentials in your home for days on end. And because the system is modular, you can get the expansion batteries you need now and easily add on more in the future when your needs change.
The Tank PRO 4000 nests snugly with the Yeti PRO 4000 to build out your home backup system. Once connected, the two devices function as one unit and charge and drain together.
Improved LiFePO4 battery tech gives the Tank PRO 4000 an 8X longer lifespan than our previous generation expansion batteries. When you add one to your setup you get high-capacity, reliable backup power that will last for years.
Our customizable backup power solutions can cover up to 10 essential circuits when you connect your power station to the Haven 10 Manual Transfer Switch. Get reliable power during outages and emergencies. Power lights, fridges, medical devices, Wi-Fi routers, and more!
Need power for appliances in your van or RV? Keep life on the road comfortable with our Escape Ecosystem, which makes it easy to power appliances and charge devices, even when you don't have access to shore power.
The Goal Zero ecosystem is designed to give you control over your own power solutions, whether you're looking for home backup, work site power, off-grid power, ways to upgrade your camping trips, or power on the road. We offer portable power stations, expansion batteries, solar panels, lights, and more.
LEARN MORE* To 80% of original capacity at 25 °C with a 0.5C charge and discharge.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.