This is a portable car jump starter as well as a power bank. This comes in its own storage case and is an awesome item to have and carrying in your car. It will even charge cell phones, tablets, etc., and has an emergency light feature. It can jump a car just by hooking up the cables to your battery without another car needed like typical jumper cables. It is small and totally portable. Would easily fit under the seat in the car. This really works well. We tried it out on my neice's car that was dead for a week and it worked great and got her car back up and running. Here are the specs from the company so you can get a better understanding of what it does: Powerful jump starter to safely jump start a dead battery in seconds. Supports fast charging. Low self-discharge. Up to 1000 cycles. Be sure to pack this when you go camping, picnicking or go on any outdoor adventure. Ultra-portable - Portable, compact, lightweight design that will easily fit in your backpack, or glove box for convenience. Help car start by a simple clip and no need to disconnect the original car battery. Compact size but high power. Ultra-safe and Error-proof - Offers spark-proof technology and reverse polarity protection, which allows it to safely connect to any battery. Multiple safety design ensures jump starter is mistake-proof. Find Your Way Safely after Dark - Thanks to the built-in LED that functions as a flashlight and can send out SOS distress signals. It is the ideal choice for night shift workers, overtime workers and many others. Recharge Your USB and Other Devices On The Go - Charges mobile phones, Sony PSP, MP3 / MP4 players, PDAs, notebooks, car refrigerators and other compatible appliances. You can order this at the following link: http://www.amazon.com/1byone-Multi-Function-Portable-Powerbank-Smartphones/dp/B00QPQD1NQ
