10000mAh Portable Solar Power Battery Pack with Laptop & Cellphone Adapters

Pros: The battery lasts a long time. I can now use my computer for a full day of courses at the university without problems.
It comes with many adapters, so I know that if I buy another computer, I'll be able to use this battery with it too.
It's lighter than I expected.
The LEDs to check the battery load are really handy.

Cons: It takes much time to load with the charger - and much more in the sun. With only the solar panels, it requires about three or four sunny days.

Other: If you use often your computer and have often problems because you don't know if you'll have enough battery for doing what you have to, then you are in the case I was before I bought this external battery :-)

Pros: Very useful thing. Has great capacity and many outputs to satisfy all necessaries. Not so bad plastic case has no backlash. Not so heavy as I expected. Charger indicates when battery is fully charged and it`s very useful.

Cons: Probably Lower capacity then mentioned. Takes long time to charge from the sun.

Other: It is a pity, I can`t actually measure up the real capacity.

Pros: As written in the description, it is portable, so you won't need plugs aroud to find energy source. It is a very useful device to recharge your usb stuff, since they don't require huge amounts of energy. Using only sunlight is very useful specially if you spend time out of home, going to places away from cities, etc. Build quality is very good and uses 5 LEDs indicators to show battery status and 1 LED to show if is being charged by light. Battery lasts long enough to recharge your USB stuff many times.

Cons: Definetly it charges very slowly at sunlight. I'll test it and upload a video with this information. Regarding the "laptop" propaganda, I was a bit disappointed. It does not make miracles: modern computers are very sensitive to wattage changes (as my Dell Inspiron 14R) and will warn you that something is not working well. It works as if plugged, but the system will stop charging laptop battery. Will also prevent depletion of main battery, but won't last for more than 2 hours when fully charged (See Other thoughts). May not come with a fittable laptop plug. I had to buy a bigger one in a chinese store. Makes a strange buzz when connected to computer. High price.

Other: I'd recommend this IF: You use cameras, cell phones and USB rechargeable stuff, things that can go out of power unexpectedly, it's a good deal. If you go out for quick jobs (about 3 or 4 hours) away from energy sources, it's good to use it as external battery for laptop. Even if you think you are in this group, consider buying a charger only with USB. They are probably easier to carry and cheaper. I would NOT recommend this IF: You want to save the world from global warming, thinking that will never use a switch plug again to energize your equipments. This is very useful, but it's not a futuristic power plant. (For a moment I though belonged to this group, maybe that's why I'm a bit disappointed).