Car Charger for my Toshiba Laptop???

I have a Toshiba laptop. Its a Intel (R) Core (TM) 2Duo CPU T5250 @ 150 GHZ. I am going on a long road trip and would like a device to charge the laptop from the car. Please recommend a specific brand and model and the link if possible. The less expensive, the better!! Also, i wanted to know if the device has an... show more I have a Toshiba laptop. Its a Intel (R) Core (TM) 2Duo CPU T5250 @ 150 GHZ. I am going on a long road trip and would like a device to charge the laptop from the car. Please recommend a specific brand and model and the link if possible. The less expensive, the better!! Also, i wanted to know if the device has an effect on the car battery?
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