About Product:This product uses PTC and CID dual protection, so that the battery explosion can not be. Use independent of lithium battery protection IC and avoid overcharge, over discharge and short circuit, life assurance, using two 2000mA batteries, fan time 5-20 hours, can charge a mobile phone, usable hand is, the handle can be folded at 180 degrees, can be caught in the computer, can be hung on the umbrella or convenient can remove mobile power. Want to purchase as soon as possible. One piece of 60