It's no fun to see your notebook overheat and lose all your precious data. A notebook cooler would prevent exactly that. In comparison to the cost of losing your work and personal files, it is a cheap solution.
300W DC 12V to AC 220V Pure Sine Wave Power Inverter, adopt with advanced SPWM chip technology, multi protection functions such as low voltage alarm, undervoltage protection, overvoltage protection, short circuit protection, overheat protection etc…, securely protecting your appliances and car circuit. Widely used on all kinds of electric equipments which input voltage is AC 220V and power consumption less than 300W for household appliances, official equipments and other electrical devices, such as TV sets, electric fan, refrigerator, lighting lamps, DVD, amplifier, audio, video cam, electrical tools, fax simile, photocopy machine, laptop. With 5V USB output function, can directly charge your cell phone, MP4 using your original USB cable (not included), very useful.