We all need some extra power storage away for those long trips, campings or just to have around when an outlet is not available or is not an option.

Now it seem that the market is oversaturated with external batteries or like they are sometime calls power banks.

While they may look all the same they are not all made or perform in the same way.

A bad battery may not provide the stated capacity or even worst it can shorten your phone battery or even damege it. 

A good battery on the other hand will not only will provide the stated capacity but will do so on a safe way to prevent any damage to your phone or tablet.

The following list consist of the best ones you can get. Not only this batteries are designed to perform as stated and protect your phone but they are also highly rated, comes with warranty and customer support in the rare case something goes wrong with it.

The Ultra Premium Option

mophie Powerstation 8X Dual USB External Battery for Smartphones and Tablets (15,000 mAh) - Aluminum

    •    Provides up to 8X additional battery
    •    Dual output - Charge two devices at once
    •    Ultra-slim design
    •    Anodized Aluminum Finish - Premium feel
    •    Integrated LEDs indicate the battery level and charge status and works with bluetooth enabled mophie power app.

This battery is the absolute best but has a big drawback. The battery is built by mophie a powerhouse on external batteries and batterie cases. But the $149.99 is a bit much in my opinion.   If you believe the extra cost for a premium brand, premium construction and premium support are worth then this is the one for you.

The Power Value Option

Now the following list may sound a bit repetitive but thats a good thing as the following brand not only provide a great line of battery with great performance but it offer an amazing value as well.

Anker PowerCore+ 26800 Premium Portable Charger High Capacity External Battery with Qualcomm Quick Charge 2.0 and PowerPort+ 1 with Quick Charge 3.0 Wall Charger

    •    The Anker Advantage: Join the 10 million+ powered by America's leading USB charging brand.
    •    Qualcomm Quick Charge 2.0: Using Qualcomm's advanced Quick Charge 2.0 technology, PowerCore+ allows compatible devices to charge 75% faster. Recharges itself 2X as fast with the included wall charger.
    •    Fast-Charging Technology: Exclusive to Anker, PowerIQ and VoltageBoost technologies combine to provide universal full speed charging for non-Quick Charge devices, up to 2.4 amps per port.
    •    Ultra-High Capacity: PowerCore+ 26800 is the world's highest capacity portable charger with Quick Charge 2.0 technology. It charges the iPhone 6s ten times, the Galaxy S6 over seven times or the 2015 MacBook more than three times.
    •    What You Get: Anker PowerCore+ 26800, PowerPort+ 1 with Quick Charge 3.0, Micro USB cable, travel pouch, welcome guide, our 18-month worry-free warranty and friendly customer service.

This is the best high capacity external battery you can get at an affordable price. It has over 26,000mAh enough to charge an iPhone over 10 times.

Anker PowerCore 20100 - Ultra High Capacity Power Bank with Most Powerful 4.8A Output, PowerIQ Technology for iPhone, iPad and Samsung Galaxy and More (Black)

    •    The Anker Advantage: Join the 10 million+ powered by our leading technology.
    •    Ultra-High Capacity: Weighs as little as a can of soup (12.5 oz) yet charges the iPhone 6s seven times, the Galaxy S6 five times or the iPad mini 4 twice.
    •    Fast Charging Technology: PowerIQ and VoltageBoost combine to deliver the fastest possible charge up to 2.4 amps per port or 4.8 amps overall. Recharges itself in 10 hours with a 2 amp charger, phone chargers (generally 1 amp) may take up to 20 hours.
    •    Certified Safe: Anker's MultiProtect safety system ensures complete protection for you and your devices.
    •    What You Get: Anker PowerCore 20100 Portable Charger, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. Lightning cable for iPhone / iPad sold separately.

On the middle of the road with 15,000 mAh and 10,000mAh we have another pair of Ankers.

Anker PowerCore 15600 Super High-Capacity Fast-Charging Portable External Battery Charger with Industry-Leading 4.8A Output, PowerIQ and VoltageBoost Technology (Black)

    •    The Anker Advantage: Join the 10 million+ powered by our leading technology.
    •    Super-High Capacity: Upgraded from the PowerCore 13000, weighs as little as a can of soup (13.3 oz) yet charges the iPhone 6 five times, the Galaxy S6 four times or the iPad Air almost one and a half times. Safely recharges with a 2 amp output charger (most phone chargers have 1 amp output).
    •    Fast-Charging Technology: PowerIQ and VoltageBoost combine to deliver the fastest possible charge up to 2.4 amps per port or 4.8 amps overall. Input: 5V / 2A.
    •    Incredibly Durable: Built with a double-layer shell and fire-resistant polycarbonate to ensure rugged resistance to impacts, vibration and extreme temperatures (-40°F to 158°F).
    •    What You Get: Anker PowerCore 15600 Portable Charger, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. Lightning cable for iPhone / iPad sold separately.

Anker PowerCore 10000 Portable Charger, The Smallest and Lightest 10000mAh External Battery, 10000mAh Ultra-Compact Fast-Charging-Technology Power Bank for iPhone, Samsung Galaxy and More

    •    The Anker Advantage: Join the 10 million+ powered by our leading technology.
    •    Remarkably Compact: The smallest and lightest 10000mAh portable charger. Provides almost four iPhone 6s charges or three Galaxy S6 charges.
    •    Fast-Charging Technology: Anker's exclusive PowerIQ and VoltageBoost combine to deliver the fastest possible charge for any device. Qualcomm Quick Charge not supported.
    •    Certified Safe: Anker's MultiProtect safety system ensures complete protection for you and your devices.
    •    What You Get: Anker PowerCore 10000 portable charger, Micro USB cable, travel pouch, welcome guide, our worry-free 18-month warranty and friendly customer service.

And if you are looking for a small portable one that will provide enough power to power your phone at least one here is the best option.

Anker PowerCore+ mini 3350mAh Lipstick-Sized Portable Charger (3rd Generation, Premium Aluminum Power Bank) Most Compact External Battery, Uses High-Quality Panasonic Cells

    •    The Anker Advantage: Join the 10 million+ powered by our leading technology
    •    Fast Charging Technology: PowerIQ detects your device to deliver its fastest possible charge speed up to 1 amp
    •    Ultra Compact: Our original lipstick-shaped aluminum design (3.7 × 0.9 × 0.9in, 3oz). Recharges in 3-4 hours with a 1 amp adapter (sold separately) and the included Micro USB cable.
    •    powerful "mini" portable charger on the market. Adds over one charge (14 hours talktime) to an iPhone 6, almost one full charge to a Galaxy S6 or one full charge to most other phones.
    •    What You Get: Anker PowerCore+ mini (3350mAh Premium Aluminum Portable Charger), Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.Lightning cable for iPhone / iPad sold separately.