This is our new product which is a portable charger for high capacity batteries of laptops. You can charge up your battery after taking the battery out of your laptop. It means you can charge up your laptop battery without laptop, just like a universal cell phone charger. The Charge voltage and current can be regulated automatically according to the battery voltage and capacity. With the separate connecting wire, this product can be suitable for over 95% of the laptops in market. With one USB port, it can charge up your mobile phone, digital camera, mp3, mp4 and other USB peripherals. Simplify charging process, save your time and preserve your laptop, especially when you own two batteries or more.