20000mAh External Battery for Laptop

20000mAhBattery Description: This mobilecharger is a multi-functional and high-capacity product which could serve as both charger and battery and provide power for your portable computer at anytime and anywhere. The unit is highly praised for its great capacity, compatibility, portability, extensive applicability . Product Characteristics: 1. High capacity: The mobile power can charge most mobile phones for 20-32 times with about 2 hours charging period every time. It can support a 16v portable computer and a 19v one (direct provides the power mode) to work for about 4.5 hours when the battery of the computer is used up . 2. Widely compatible Suitable for many circumstances where it is convenient to charge for your portable devices such as in business traveling, camping, exploration, meeting and other places without power to be used. 3. High reliability and transformation rate: Adopting an intelligent chip from America and highly-performing controlling circuit, the unit can realize the power transformation up to 85%. It also has these functions of charging protection, discharging protection and short circuit protection. It is safe and environment-friendly. 4. Fashionable It is a small one, light and with well figure. It is easy to carry and could be used at any time. 5. Power indication: The LCD would directly display the voltage and power level while charging. 6. Long cycle life: It can be recharged up to over 600 times and work over5 years in normal conditions.