Universal External Laptop Battery

Our universal external laptop battery is designed for mobile office, travel and leisure use, we have various models cover the application of most laptops on sale and will provide 2-6hrs extra running time for your laptop.
Features:
High energy density li-ion battery technology.
39~130WHs continuous power.
Compatible for most laptops on sale by changing the converter tips.
5 LED indicators.
IC protection, precise charge and discharge control.