Looking for a solar laptop battery charger

There are many of them - but hopefully you don't need much portability, because the power requirements of a notebook dictate that the solar panel will be relatively large.

For example,

http://www.directron.com/asp10blk.html?gsear=1

Sorry. Made a math error. Probably get 20 watts max from this unit, which is still low for operating the PC. It would charge a battrery in 5 hours if it wern't for the Dell signal problem. Do a search on Dells with solar chargers to see what others have experienced.

The panel referenced by ejn63 will output 5 watts max (They don't tell you this. 150 Watts per square meter is typical for an efficient panel.). Therefore it would take 10-20 hours to charge a laptop battery under optimum conditions. It would NOT be powerful enough to run the laptop. In addition, Dell laptops require a signal from the charger to identify the charger. Without this signal, no charging is allowed.

Thanks. It seems that i need to find the balance between Portability and Power. The solar panel you recommend is powerful and portable, however, without build-in battery, and i want to get a solar laptop charger with internal battery, so i can charge it first for emergency (if so, it will not be portable). After several search, i start to learn about those parameters (i thought that there is no difference between solar panel and solar battery charger)..  Maybe i will do a choice between

http://www.amazon.com/Molasolar-Universal-54000mah-Notebook-Application/dp/B0030UQPHO  high capacity

and

http://www.espow.com/wholesale-electric-eye-multicrystal-silicon-16000mah-solar-battery-charger-panel-for-laptop.html

Humm, because of High Efficiency, i would concern about solar panel.

In addition, Dell laptops require a signal from the charger to identify the charger. Without this signal, no charging is allowed.

Well, i've never heard of this issue, search in this forum and i do find the same problem about "Power Adapter Error message & Battery Not charging!" at: http://en.community.dell.com/support-forums/laptop/f/3518/p/19245866/19385119.aspx , many thanks

It actually is a big problem. There are mucho complaints about the laptops not recognizing the supply.

Dell is about the only OEM to use the signal. Abuse of the power cord can result in a broken signal lead. Also, Dell does not use a shielded cable, and an RF pulse can be picked up by the wire and fry the signal part of the supply.

it's of commercial monopoly. Cell Phone Universal Charger Standard will be put into service... Looking forword to laptop universal charger standard.. Before this, i have to ask the retailer about the 16000mAh solar laptop charger i have chosen whether it supports my dell laptop.

Whatever you do DON'T use the company in the link you posted, Espow.  Disreputable, you won't get what you ordered, likely fakes if they ever arrive.

http://forums.steves-digicams.com/batteries-power-packs/144512-cr-v3-watch-out-fakes-about.html

Oh wait...that's YOUR company Jack!!!!!!!!!

http://www.google.com/search?client=safari&rls=en&q=Espow+Jack+Drogba&ie=UTF-8&oe=UTF-8

LOL!!!   You've "chosen" it from your own company!  :emotion-43:   You'll "have to ask the retailer!!!  BWAAAAAAAHHHHH!!

This is the Espow treatment, folks.  Imagine what it's like getting "real" info from them when you don't have your charger a month later.

Thanks. It seems that i need to find the balance between Portability and Power. The solar panel you recommend is powerful and portable, however, without build-in battery, and i want to get a solar laptop charger with internal battery, so i can charge it first for emergency (if so, it will not be portable). After several search, i start to learn about those parameters (i thought that there is no difference between solar panel and solar battery charger)..  Maybe i will do a choice between http://www.amazon.com/Molasolar-Universal-54000mah-Notebook-Application/dp/B0030UQPHO  high capacity and http://www.espow.com/wholesale-electric-eye-multicrystal-silicon-16000mah-solar-battery-charger-panel-for-laptop.html Humm, because of High Efficiency, i would concern about solar panel.