The BigBlue 5V 28W Solar Charger Panel is a rugged, durable, weatherproof phone and tablet recharger.

Built-in Ammeter and Chip:

• The solar charger has a digital ammeter that shows the amount of Amps present
• The internal chip assures a stable charge rate

Wide Compatibility:

• There is an attached micro USB cable for almost all the Android devices and even some of the digital single-lens reflex cameras
• You will need extra cables for some other specialist device types

Safe Charge:

• SunPower Solar Panels provide high solar conversion efficiency

The BigBlue 5V 28W Solar Charger  is portable at 23.5 oz but not the lightest in class:

• It’s easy to carry when it folds to the size and thickness of an exercise book

Robust Design:

• Used for trekking, hiking, climbing, picnics, etc
• Ideal for outdoor activities needing power such as camping, boating, fishing, cycling, etc

Special PET Polymer Surface:

• This protects your solar panel and your devices from occasional rain or wet fog
• Waterproof to IPX4 level. (i.e. resistant to water splashes from any direction)
• Keep it away from water when you have any devices on charge

Package & Warranty:

• BigBlue 5V 28W uses industrial-strength PET polymer fabric
• 24-month warranty on the complete package

BigBlue Flashlight And Battery:

• BigBlue 5V 28W lacks useful built in features like flashlight or Solar Battery

This portable solar charger is user-friendly, and compatible with all USB rechargeable devices. This inexpensive charger operates on sun energy so produces 100% green power and has amazing 21.5% to 23.5% solar efficiency. 

Unfold the charger panels and place the BigBlue 5V 28W unit wherever you can access direct sunlight and the portable solar charger panels get to work. It even charges your device in partly cloudy conditions. You can relax, admiring the panorama as you charge your cell phone, tablet, GoPro, GPS or camera.

The BigBlue 5V 28W folding panel package includes 4 clip hooks, which allows you to hook your solar panel everywhere convenient to get solar access (trees, backpacks, vehicle, etc.) It is bulky when it is unfolded, and with all its features it is slightly heavier than less powerful units in the portable range, albeit there is no inside solar battery for storage included in that weight.

The panels are rated as waterproof but this is rating is for splashed water and intermittent rain showers. An internal chip ensures that when the panel loses contact with sunlight for a period of time (walking through dense forest, rain cloud shadow, intermittent shadow from placing it on a moving backpack), it will stop charging until he comes back into contact with the sun's rays, without damaging your connected device.

The built-in ammeter and the pocket with a zip will keep your devices safe and clean while they are being charged. Remember that Apple devices have a chip that closes the phone down and stops the phone charging whenever its inner temperature get too hot. 

An overheating situation may occur, even when it's inside the BigBlue's zip cover if you have the solar panels together with the charging phone out in full sun. You might save the phone from overheating by using a longer USB cable and keeping the phone in shade, either a ventilated area or insulated inside a backpack. You need to place the solar charger's panels in full sunlight, without shade and obstacles that may cause an intermittent shadow.

Most customers gave the device a good rating. The rating was 4.2 out of 5 stars.

Here are some of the comments about the BigBlue 5V 28W:

We highly recommend the BigBlue 5v 28w solar charger.

The BigBlue Solar Charger with Digital Ammeter and two USB Ports is an efficient compact foldable solar charger; a great portable solar charger for both backpacking and sit-me-down camping, even if it rains. The Sunpower solar panels are waterproof but the USB connections are only splash proof.

It's your portable solar support for the must-have gadgets that you take on walks; the essential smartphone, cameras, tablets, GPS and similar portable on the move whatnots.

It doesn't come with an inbuilt battery but you can option to buy compatible rechargeable battery storage. The BigBlue 5v 28w solar charger could boost your portable battery storage on one of its USB ports for later use while your phone or GPS is plugged into the other USB. We recommend however that with many of the multiple outlet units that you charge one device at a time to achieve maximum efficiency from the charger.

The BigBlue 5v 28w solar charger is a great little portable charging unit for your mobile phone or USB gadgets during backpack hiking, trekking and camping.

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