Meet the Anker PowerHouse: a portable, fumeless, silent power supply that can power your phones, laptops, mini fridges, and other appliances. It has a 12V car socket, an AC outlet, and 4 USB ports. The battery management system handles voltage control, temperature control, and other safety features.
PowerHouse can be recharged using a wall outlet or solar power. It is powerful enough to fully charge a laptop up to 15 times. Costs under $500 at this time.