Solar4Power makes a number of different sized mini-panels that are supplied by Advanced Energy Group. They call them mini, but compact might be a better description when compared to the wallet-sized mini-panels on the market. At a maximum output capacity of 2000 watts, it makes the top-end unit the most powerful mini-panel. It charges a battery that is capable of handling either 120-volt AC or 12-volt DC loads and has standard receptacles. Its retractable handles and wheeled base make it extremely mobile. Typically, you can run 100 watt loads from the battery alone for about 8 hours, and much higher loads for shorter periods of usually about an hour. The battery is also chargeable via home outlet or car battery if you want to fully charge it before setting off on your trip. Along with all that power comes one of the steepest price tags among mini-solar panels, at nearly $1,800. Oddly enough, the unit itself has no specific name or part number, but is available through the company website.
Brunton 26 Watt Foldable Solar Array
This 26-watt solar panel folds up and when open is the size of a sheet of paper and one-inch thick. It weighs only 28 ounces. The panels have cords to interconnect more than one panel. Single panels alone are sufficient to run iPods, MP3 players, cellular phones and GPS tracking units. However, the receptacles are limiting and will require an adapter if you want to plug equipment into an outlet like those in the walls of your home. The unit offers one set of cables with clamps, much like you would attach to the posts of a car battery, and another female receptacle much like a cigarette lighter you would find in a car. If the type of outlet you seek is a regular two- or three-prong AC receptacle, you can purchase an adapter for the lighter cable at a local Radio Shack or electronics store for about $30 or less to make the cigarette style outlet more functional. A single panel will charge your laptop or other battery-rechargeable electronics, but the adapter and second panel is recommended to run the laptop real-time while charging, or if you want to use a satellite phone or other units that require more power than a single panel can deliver.
The powermonkey-eXplorer's slim bifold solar panel connects to a separate compact battery pack. This is one of only a very few true mini solar panels that in addition to nine USB charging tips (for its cable for laptop and iPod and playthings) offers 110-volt and 240-volt outlets with adapters for travel overseas. It can be charged by sunlight, plugged into a wall outlet or from other charged battery-powered units via USB. The manufacturer recommends that the battery remains charged at all times. It has indicators to tell you when it's fully charged and running low of electricity, and and has built-in protections against over-charging and over-spending its available power. The unit lists for $130 but can be found slightly cheaper online.