1. Úvod
Thank you for choosing the Sandberg Solar Charger 21W 2xUSB+USB-C. This device is designed to provide portable power for your mobile devices using solar energy. It features a 21W solar panel and a built-in battery for stable power output, ensuring your smartphones and other USB-powered gadgets remain charged while outdoors or away from traditional power sources. This manual provides essential information for the safe and efficient use of your solar charger.

Image 1.1: Sandberg Solar Charger 21W in retail packaging.
2. Obsah balení
Prosím, ověřte, zda jsou v balení přítomny všechny položky:
- Sandberg Solar Charger 21W (Model 420-55)
- USB nabíjecí kabel
- Uživatelská příručka (tento dokument)
3. Nastavení
Follow these steps to set up your solar charger for optimal performance:
- Rozložte solární panely: Gently unfold the solar charger to fully expose all solar panels. Ensure they are flat and facing upwards.
- Poloha pro sluneční světlo: Place the unfolded solar charger in direct sunlight. For best results, angle the panels directly towards the sun. Avoid shaded areas, as even partial shading can significantly reduce charging efficiency.
- Připojte své zařízení: Use a compatible USB cable to connect your smartphone, tablet, or other USB-powered device to one of the available USB-A or USB-C ports on the solar charger.
- Počáteční poplatek: It is recommended to fully charge the internal battery of the solar charger via a wall adapter (not included) before its first solar use, especially if the device has been stored for an extended period. This ensures the internal battery is ready to provide stable power.

Image 3.1: The Sandberg Solar Charger 21W unfolded, ready for use.

Image 3.2: Connecting a smartphone to the solar charger for charging.
4. Návod k obsluze
The Sandberg Solar Charger is designed for ease of use. Here are key operational guidelines:
- Solární nabíjení: When exposed to direct sunlight, the solar panels will convert solar energy into electrical energy, which is then stored in the internal lithium polymer battery. The built-in battery ensures a stable power supply to your connected devices, even if sunlight fluctuates.
- Nabíjení zařízení: Connect your device to one of the USB-A or USB-C ports. The charger supports Quick Charge 3.0 via USB-C for faster charging of compatible devices. The charger will automatically detect and deliver the appropriate current to your device.
- Indikátory nabíjení: The charger features LED indicators (refer to the product diagram on the device itself for exact location) that show the charging status of the internal battery and indicate when solar power is being generated.
- Optimální podmínky: For the fastest solar charging, ensure the panels are clean and positioned perpendicular to the sun's rays. Performance will be reduced on cloudy days or in shaded conditions.
- Voděodolnost: The charger is designed with water resistance, making it suitable for outdoor use. However, avoid submerging the device in water or exposing the ports to heavy rain for extended periods.

Image 4.1: The solar charger is ideal for outdoor activities like hiking.
5. Údržba
Proper maintenance ensures the longevity and efficiency of your solar charger:
- Čištění: Solární panely pravidelně otírejte měkkým hadříkemamp cloth to remove dust, dirt, or debris. A clean panel absorbs sunlight more efficiently. Do not use harsh chemicals or abrasive materials.
- Skladování: When not in use, fold the solar charger and store it in a cool, dry place away from direct sunlight and extreme temperatures. Avoid storing it in environments with high humidity.
- Zacházení: Handle the charger with care. Avoid dropping it or subjecting it to strong impacts, which could damage the solar cells or internal components.
- Péče o baterie: If storing for extended periods, ensure the internal battery is charged to approximately 50-70% capacity. Recharge it every 3-6 months to prevent deep discharge and prolong battery life.

Image 5.1: The folded solar charger is compact for storage and transport.
6. Řešení problémů
If you encounter issues with your solar charger, refer to the following common problems and solutions:
- Zařízení se nenabíjí:
- Ensure the solar panels are in direct, unobstructed sunlight.
- Check that the USB cable is securely connected to both the charger and your device.
- Zkontrolujte, zda je nabíjecí port vašeho zařízení čistý a nepoškozený.
- Confirm the internal battery of the solar charger has sufficient charge.
- Pomalé nabíjení:
- Charging speed is highly dependent on sunlight intensity. Ensure maximum sun exposure.
- Clean the solar panels to remove any dirt or dust.
- Ensure the ambient temperature is not excessively high, as extreme heat can affect charging efficiency.
- Používejte vysoce kvalitní USB kabel určený pro rychlé nabíjení.
- LED indikátory nesvítí:
- If in sunlight, ensure the panels are receiving enough light.
- If connected to a device, check the cable and device connection.
- The internal battery might be fully discharged. Try charging it via a wall adapter.
If problems persist, please contact Sandberg customer support.
7. Specifikace
| Funkce | Specifikace |
|---|---|
| Značka | Sandberg |
| Model | 420-55 |
| Napájení ze solárních panelů | 21 wattů |
| Typ baterie | Lithium Polymer |
| Vstupní objemtage | 5 voltů |
| Výstup Ampvymazat | 2 Amperes |
| USB porty | 3 (2x USB-A, 1x USB-C) |
| Typ konektoru | USB |
| Kompatibilní zařízení | Chytré telefony, tablety a další zařízení napájená z USB |
| Speciální funkce | Short circuit protection, Water resistant, Foldable |
| Rozměry (složené) | Přibližně 58 x 31 x 1 cm |
| Hmotnost | 700 g |
8. Informace o záruce
Sandberg products are known for their high quality. This product comes with a 5-letá zárukaPro případné reklamace si prosím uschovejte doklad o koupi. Záruka se vztahuje na výrobní vady vzniklé běžným používáním. Nevztahuje se na škody způsobené nesprávným použitím, nehodami, neoprávněnými úpravami nebo běžným opotřebením.
9. Podpora
For technical support, warranty claims, or further assistance, please visit the official Sandberg website or contact their customer service department. You can typically find contact information on the Sandberg webmístě nebo na obalu produktu.
Webmísto: www.sandberg.it (Napřampodkaz, ověřte si prosím oficiální podporu URL)