Packing A Charge

Posted on Thu May 15 2008

By: Hilary Feldman in Daily Green Tips, Environment, Solar Power

Comments: 3

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Let’s admit it - we are pretty obsessed with electronics in recent years. From cellphones to laptops, Blackberry devices to mp3 players, a single person can juggle lots of attention-grabbing equipment. But they all require some power source and batteries are the common denominator. While some people may consider energy issues before a purchase, chances are that most consumers do not.

A new product may appeal to technophiles and environmental enthusiasts alike. Intended to hit the market Spring 2008, the Voltaic Generator joins its smaller cousins, the Voltaic solar bags, to support our power-hungry requirements.

The Voltaic solar bag is a lightweight portable generator. There are several possible charging modes, allowing the battery pack to store power until it is needed. Three solar panels set on the outside of the bags offer the primary way to recharge the battery, but it can also be connected to either a car or wall socket.

The solar panels are most effective when angled to face into direct sunlight. On a bright day, 8-10 hours will fully charge the battery. An LED light on the pack’s logo indicates that the battery is charging. Lower light levels will also supply a charge, but at a slower rate.

The connection possibilities are extensive. The battery can power a wide range of electronics and has a voltage setting to accommodate 3.5V, 5V, and 7.2V, while an additional cable is set at 10V. Another alternative allows the lithium ion battery to connect to a car charger socket and USB adaptor. Charge times for electronics are similar to using a car charger - with cellphones completely recharging in about two hours from the battery or 4-6 hours in direct sunlight. Digital cameras, GPS devices, and iPods require about the same time. Charging sockets are located inside the bag, as well as on the shoulder strap.

While the solar bag works optimally when fully charged, it is also useful when flat. For example, if a cellphone battery is uncharged along with the battery pack, it is still possible to make a call. Simply attach the phone to the pack and angle the panels toward the sun, thereby allowing sufficient charge. In fact, one hour in direct sunlight translates to about 90 minutes of cellphone life or three hours of iPod use.

While handy and adaptable, the solar bag is not able to charge laptop computers, as it is limited to roughly 4 Watts. This is where the new Generator will meet the need, as laptops require at least 10 Watts. The Generator is designed to produce up to 14.7 Watts.

Solar bags come in a variety of shapes, sizes, and colours. The material is from recycled plastic bottles, creating a water-resistant and tough surface. The smallest bag, called the Converter, weighs only 1.3 kilograms, has a compartment for a water bladder, and can also hold laptop-sized objects. Larger versions include a messenger bag, daypack, and backpack. The Generator is the largest version, weighing about 2 kilograms, and can charge any handheld device. As always, be aware that no charging device is perfect. Some manufacturers design their products to rely exclusively on certain chargers. Check the compatibility guidelines.

Other companies also make similar products, including Reware, Noon, and Eclipse Solar Gear.

While these bags will not substantially affect the drain on mainstream power lines, they offer a few advantages. Any use of solar power is positive and draws attention to alternative sources. More importantly, battery consumption should go down. And what a boon for those far from the madding crowds but desperate to use a GPS or cellphone.

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