FAQs

Of course! All you need to do is sign up for our newsletter, located at the bottom right of the page.

Easy! If the product is currently unavailable, there should be a "EMAIL WHEN AVAILABLE" button on the product page. Simply click this button and submit your email address. You will be notified immediately when the item is back in stock.

The best way to speak with a customer support representative is to fill out and submit our Contact Us form.

Yes! Our customer service department will need to verify your military status. Please use the Contact Us form, include that you are military, and a customer service rep will follow up with you.

You will receive an email confirmation when your order is submitted. The order confirmation will summarize the items purchased, total amount of the purchase, payment method, shipping method and shipping address. Once your order ships, you will receive a shipment confirmation email, which will include your tracking number. If you do not receive an order or shipping confirmation email, check your spam or junk email folder first, then contact us by email at hello@sunjack.com. You can also view tracking numbers once your order has shipped by logging into your customer account.

Due to shipping regulations and special handling required for lithium-ion batteries, only standard shipping to the Domestic Continental US is available for orders containing an individual lithium-ion powerbank battery. Expedited (2nd Day Air) is not available as a shipping option and we do not ship orders that include an individual lithium ion battery to Hawaii, Alaska, International locations or PO boxes. Please refer to our Shipping Info page for more details.  

Yes we do ship to some international locations. We do not ship orders that include an individual lithium ion battery to any international location. Please refer to our Shipping Info page for more details.  

We ship some items to PO Boxes. We do not ship orders that include an individual lithium ion battery to PO Boxes. Please refer to our Shipping Info page for more details.  

All shipping costs paid during your original purchase are non-refundable.

The SunJack Return Policy lasts 30 days - if 30 days have gone by since your purchase, we unfortunately cannot offer you a refund or exchange. Please refer to our Return Policy for more details.

To initiate a return, please refer to our Return Policy. PLEASE NOTE: All returns must be approved in advance to be eligible for a refund or exchange. 

For all eligible domestic orders, return shipping is FREE! For domestic US returns, we partner with Happy Return through which we provide a pre-paid return label. For international orders, customers are responsible for return shipping – all duties, fees and taxes must be pre-paid. We are unable to accept C.O.D. You should consider using a trackable shipping service or purchasing shipping insurance. We do not guarantee that we will receive your returned item.

All refunds are issued to the original form of payment, no exceptions.

​​​​​​All shipping costs paid during your original purchase are non-refundable.

​​​​​​Once your return is received, we will inspect it to determine if your return is eligible for refund. If you are approved, then your refund will be processed. Within a certain amount of days, a credit will automatically be applied to your credit card or original method of payment. If you are experiencing a significant delay in receiving your refund, first check your bank account. Then contact your credit card company and next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please Contact Us.

In short, a solar charger converts solar energy into readily useable electricity. Now, that is a very simple response to a complex answer. There are several processes that occur, typically instantaneously once the solar panels are exposed to sunlight. For more information and details on how solar chargers convert solar energy into electricity, please read more here.

SunJack portable solar panels are made with ETFE and fully laminated, which makes them a cut above and superior to many other brands of solar panels in the market. Some brands may advertise their solar panels use ETFE, but they only include a thin layer to one side of the panel. This is similar to calling a gold plated ring solid gold. ETFE is short for Ethylene TetraFlouroEthylene. ETFE provides numerous benefits to solar panels, namely increased life expectancy and durability, improved performance and charge speeds, maintenance free and since ETFE is composed of sustainable material and is 100% recyclable, it makes the solar panel truly a source of renewable “green” energy. For information on the benefits of ETFE, please read more here.

SunJack solar panels are designed to be portable. You can take SunJack solar panels just about anywhere, particularly where there is no readily accessible source of power. You can take the panels hiking, backpacking, to the park, mountain biking and more. For more ideas of where you can take your solar panels, please read more here.

SunJack solar panels are weatherproof and waterproof. The SunJack Backpacker series solar panels are constructed from ETFE, which essentially is durable plastic coating, which in addition to improving performance and significantly increasing durability, also acts as a waterproof barrier. The USB ports / junction box are also waterproof,rated IP67. However, out of an abundance of caution, do not submerge the junction box in water and keep mist and spray away from the USB ports.

No. The pouch attached to the SunJack Backpacker Series Solar Panels is constructed from a mesh fabric. The purpose of the mesh is to prevent your devices (cell phones, powerbanks, etc.) from overheating while charging. If you charge a device while stored in a waterproof pouch, the device will likely overheat and become damaged.

No. Solar panels do not store power. The solar panel only converts solar energy into electricity. To store power converted from solar energy, you will need a battery, powerbank or power station. We sell our solar panels individually as well as with powerbanks for this reason.  

Yes! SunJack Backpacker Series solar panesl come with 1 or 2 carabiners included and each panel has several grommets to attach the carabiners to. Simply unfold the panel, attach the carabiner to the panel, then attach the panel and carabiner to your backpack. Make sure the solar panels are facing the direction of the sun and exposed to sunlight. Now, enjoy your hike while your devices charge up!

We recommend the SunJack 60W solar panel. This panel has a USB-C port that offers up to 30 watts of output. Additionally, the 60W Kit includes a power bank that provides up to 100W of power! The 15W and 25W solar panels are designed to charge smaller devices, such as phones and powerbanks, and are not suited to charge laptops.

Yes. SunJack solar panels are designed so that you can charge your iPhone, iPad or any other USB device directly from the solar panel. For more details on using a solar charger to charge your various devices, please read more here.

Yes, SunJack solar panels will work through a window, although there must be direct sunlight coming through. Also, windows tend to reduce charging speed since the window will reflect a certain amount of solar energy. Therefore, charging speeds will not be optimal when used through a window.

Yes. Both SunJack solar panels and the powerbanks can charge a 5V e-cigg battery. The output voltage of the SunJack 15W and 25W solar panels is 5V. The SunJack 10k mAh powerbank has an output rating of 5V/3A, 9V/2A, 12V/1.5A - it switches to the best current that your device can draw. For additional information on the various devices SunJack solar panels can charge, read more here.

Yes, SunJack solar panels are designed to convert solar energy into electricity even in low light or cloudy conditions. However, the charging speeds will not be as efficient when compared to full sunlight. The actual speed on a cloudy day is impossible for us to determine since there are so variables, such as the degree of cloudiness. Solar power requires the sun to shine, so if there is no sun or less than optimal conditions, the energy supplied will be less or potentially none.

Solar Panels require sunlight to create a charge. So, without sun, there is no power and the panels will not charge your device. With that said, our solar panels are designed to provide a charge in low light conditions (for instance in cloud coverage). However, the charge provided in such conditions will be significantly reduced when compared to full sunlight.

Charge speed will vary greatly based on multiple factors – type of powerbank (input charge rating and type of input charge port), age and condition of powerbank type of charging cable, capacity of powerbank, solar panel capacity and output charge rating, whether you are charging multiple devices at once, etc. Even the geographic location plays a role as temperature, general weather conditions, sunlight intensity and angle vary in each location. Also, indirect sunlight, such as though a window or not quite at the perfect angle, will reduce charging speed.

The rated operating temperature of SunJack solar panels is -4°F to 149°F (-20°C to 65°C). The highest temperature ever recorded on earth is 134°F, so you should be able to use these panels anywhere. However, the panels operate most efficiently in temperatures under 100°F, since extreme heat, in general, reduces solar efficiency - this is the case for all solar panels.

The 15W solar panel system includes one powerbank, and the 25W solar panel system includes 2 powerbanks.

Solar panels do not store power. The role of the solar panel is to convert solar energy into electricity. If there is not sunlight, then it cannot supply any power. We sell our solar panels with powerbanks so that you can charge the powerbanks with our solar panels, and then have power at any time, including at night or during inclement weather. We also sell our solar panels individually and without a powerbank in case you prefer to charge your devices directly from our solar panels or already have a powerbank you prefer.

Yes we sell our powerbanks individually, separate from the solar panels. Please see here.

No. Most powerbanks, including SunJack powerbanks, have built-in charge controllers with overcharge protection. This is the same case for phones - you can leave a phone plugged in and charging past full without any issues. Therefore, a charge controller is unnecessary for SunJack powerbanks and SunJack solar panel systems which include powerbanks.