Battery life is always an issue on every smartphone nowadays and third-party manufacturers provide external battery power supplies to ensure that life of your device will last for more than a day. These ten external battery power packs are recommended during travel, playing games outdoor or taking video in a park.

Source: Amazon

The following power banks are supporting several handsets such as iPhones, iPad, Galaxy S4, Galaxy S3, Note 3, Note 3, HTC One, Droid DNA, Moto X, Nexus 4, Nexus 7 and Nexus 10.

1. Anker Astro 3E

It has a capacity of 10,000 mAh and charges all iPhone up to five times, Galaxy S3 up to three times and iPad once. Anker Astro 3E can have up to 500 battery cycle within its life and currently on sale in Amazon at $39.99.

2. Lumsing 5X

Lumsing 5X features 11,000 mAh battery capacity which can supply up to 700 per cent of iPhone 4, 250 per cent of Nexus 7 and 500 per cent for Galaxy S3. Lumsing can have more than 500 battery cycle with a price tag of $34.99 on sale at Amazon.

3. New Trent PowerPak Xtreme NT120R

Aside from featuring 12,000 mAh capacity, New Trent PowerPak Xtreme features waterproof, dirt-proof and shock-proof capabilities. It supports Blackberry Z10, Nokia Lumia series and Sony Xperia smartphones as well. It is sold in Amazon at $54.95.

4. Anker Astro E4

Anker Astro E4 features 13,000 mAh battery capacity and delivers six times charges to most smartphones and an 80 per cent charge to an iPad 3 or iPad 4. In addition to charging devices, the power bank has a built-in flashlight for dark or low-light environments. Amazon sets Anker Astro E4 on sale at $43.99.

5. Anker Astro Pro Multi-Voltage

It is currently on sale in Amazon at $59.99 and buyers will get 14,400 mAh capacity which can charge up one netbook or seven charges of most smartphones. Anker Astro Pro Multi-Voltage supports Android tablets as well such Samsung Galaxy Tab.

6. Anker Astro E5 Ultra-High Density

A monster capacity power bank with 15,000 mAh and charges up to 8 times of smartphones. It features an ultra-high density battery cell with fastest charging time from 9 to 10 hours. Amazon is selling this power bank on sale at $49.99.

7. Limeade Blast L156X

This power bank has a 15,600 ultra-high capacity with an exclusive technology to shorten charging time on devices. It also features smudge-resistant rubber finish and built-in safety flashlight. It costs $49.99 in Amazon.

8. Limeade Blast L180X

Similar with the Limeade Blast L156X except for a larger battery capacity of 18,000 mAh which also shortens charging time of connected devices. Aside from ultra-high density and stylish design, two devices can simultaneously be charged on this power bank. It is currently on sale in Amazon at $99.99.

9. Anker Astro Pro 2 Multi-Voltage

The 20,000 mAh battery capacity is designed not only for smartphones and tablet but also for laptop computers which provide 1 full charging cycle. In addition, the power bank can sustain at 500 recharging cycle on its lifetime, slim and stylish design, and two outputs for greater versatility. It costs $99.99 on sale at Amazon.

10. Intocircuit Power Castle

It features 26,000 battery capacity which can power up notebooks, tablets and smartphones. Intocircuit Power Castle supports multiple output voltages, comes with 10 laptop connectors and 10 connectors for other mobile devices. It also boasts more than 1000 recharging cycles within its life and a built-in safety protection mechanism against overcharge, overload and short circuit. Amazon is currently selling the power bank at $102.99.