But like we all know, a laptop battery does not last for more than couple of hours. So what about the rest of the time on your long overseas flight? The simple solution to this is an external laptop battery. This device is a sleek, compact and portable battery which can attach to your laptop with the help of an AC adapter and extend your battery life for several hours.

The lifespan of an external laptop battery depends on its type and how well it is used. Most external batteries cost anywhere from $100-$200 but it can go up to $500 if it has a very good capacity and manufactured by a well-known brand.

Nowadays, these batteries are available at affordable prices as they are very much in demand from laptop users across the world. Like other rechargeable batteries, external batteries also need to be charged once they are drained out. They come with a small external charger but the charging speed is quite slow and it takes almost an entire day to recharge from a full discharge.

Nonetheless, these external batteries are a blessing to most laptop users, especially for the ones who travel frequently. Once you fully recharge the battery you can use them continuously for several hours without interruptions. These devices are great during traveling for long hours.

A good quality external laptop battery can give you 8 to 10 hours, plus a couple of hours of your laptop’s internal battery, enough for any long flight or a long day at work.

These amazing devices are far better than the air jacks that the airlines offer; usually in business class. They are reliable, economic and also work better than air jacks. So if you are going to have a long overseas flights then make sure to carry your external battery. You can work on your laptop for hours with this fabulous device.

An external laptop battery can give different results depending on the voltage. You should make sure that the voltage on the battery matches the one with your laptop. Most external batteries are compatible with almost all laptops in the market. They are thus a universal device which can be easily bought from any retail gadget store or online gadget sites. They are available in various price ranges and voltages. Choose the one that best suits your needs and budget.