My laptop makes my knees a little bit warm and the battery is nearing to 15%. Do you happen to have this feeling? You know, you survey Internet, chat, or watch videos, whatever, and then – out of the blue – your battery on its low percentage. You keep on using a laptop for the next 5 minutes, but because of some previous experience (may be your laptop shuts down one day and does not save all information?) it finally makes you stand up and fetch a charging. Funny though, technology made our life easier when PC started to be available for everyone and we were happy, but as it has turned out … laptops depend on charging and charging depends on the energy. The same with any electrical devices.