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    Frequently Asked Questions

    It can vary based on your phone type, charging cord, and level of direct sunlight the panel is exposed to. We recommend closing out applications and turning your phone to airplane mode for optimal charging. 

    There is a small  indicator light attached to the USB port inside the side pocket. When that light is illuminated, you’re in business.

    Virtually anything that connects to USB as a power source. We’ve seen great results for smartphones, battery packs, headphones, smartwatches, etc.

    RuK Packs can provide power with or without a battery pack. To achieve a continuous charge in any weather condition, using a battery pack will ensure power is stored up. Each Ruk Pack comes with a 5V battery pack.

    Yes, RuK Packs are specifically engineered to connect with most battery packs requiring USB power to charge. The side pocket offers easy storage and access for portable phone charging battery packs.

    Wherever there is UV light, the solar panel will work. The level of direct sunlight will impact the level of power it produces. Direct sunlight will provide optimal performance, we recommend keeping a battery pack plugged in if you plan to charge indoors, at night or on cloudy days.

    Less than 5 lbs (4.3 to be exact)

    Yes, the laptop pocket is larger than most standard bags with a width of over 12 inches.

    19.3 in (49 cm) x 13.6 in (34.5 cm) x 8.3 in (21 cm) with a 40 L capacity

    Yes, the RuK Pack meets all TSA requirements for carry-on luggage.

    Yes, the RuK Pack has a stand-alone design that allows it to keep its general shape (even when empty), but remain flexible enough to ensure easy stowage.

    Our Warranty for backpacks guarantees our product will be free from defects in materials and workmanship for the life of the product or 5 years (1 year for electronic components). We reserve the right to decide whether a product is defective or damaged through normal wear-and-tear. We do not replace products that have been replaced by a previous warranty claim. To receive a replacement for a defective bag, please contact us at We do not reimburse for shipping.

    You can return your RuK™ bag 30 days after it is received for any reason with proof of purchase, packaging and hang tags intact, no cosmetic or functional damage, and all items included. A $30 USD re-stocking fee per RuK bag will apply and be deducted from refund.  Customer is responsible for all shipping arrangements and costs.

    Great question! Please check out this guide to learn more!