No matter where you are, keeping an eye on your devices’ battery levels can feel like a full time job. To make matters worse, energy sources can be hard to come by when you’re out and about or traveling. In this dual review post, we’ll look at two ways to charge up: through the Anker Astro3, an external battery, and the Energizer Power 180W cup inverter for your car.

Energizer Power 180W Cup Inverter

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USB cigarette lighter adapters with one or two ports are extremely cheap and great for charging up your phone while driving around. However, sometimes your energy demands might be a bit more complex. If your computer battery is low, wouldn’t it be great to charge up on the way to that important meeting or class? That’s where an inverter comes in.

Most car inverters are ugly, loud, or huge. Instead, the Energizer Power 180W cup inverter flips right into one of your cup holders and doesn’t even make a peep. To top it off, you can split the charge between the four USB ports and a regular outlet.

About the size of a coffee mug, the device has been quietly hiding in the cupholder of my car for a couple of months now. It’s been extremely convenient when I’ve been out all day and away from plugs. Rather than plugging in my computer to an inverter and then plugging my iPhone into my MacBook, this makes it easy to plug in my iPhone and computer directly to the inverter.

In addition, you get the Energizer brand name and safety approvals – it conforms to several safety standards like UL 458.

At just around $32 on Amazon, this is great for professionals or students that spend a lot of time in their car and always need to have their devices charged up and ready to go.

Anker Astro3

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This second generation device definitely packs a load of energy in a small amount of space. Great for travelers, students, professionals, or anyone else who’s always on-the-go, the Astro3 is only about 4.5 x 3.5 x 1 inches yet over 12,000 mAh of power is packed into the 10.6 ounce (~3 iPhone 5s) device.

Charging up your devices

Boasting three USB ports – one “Smart” port that can tell the device type and deliver the fastest speed charge (great for iPads and other large tablets) and two universal 5V ports – the Astro3 can charge three devices at once. Once a device has been plugged in, the button-less battery just requires a quick shake to start pushing out the energy.

With such a massive capacity, this device took forever to test and review. At a full charge, I was able to get just about 6 full empty-to-full charges for my iPhone before the Astro3 needed to be plugged in again.

Charging up the battery

The Astro3 has a micro-USB port and, together with the included Micro-USB to USB cord, charges up through a wall plug or computer. There are a couple of caveats when it comes to charging the Astro3: you can’t charge devices while the battery is charging, some wall plugs may not be compatible (the iPhone wall plug doesn’t charge up the device, from my testing), and it takes about 8-10 hours to charge from empty to full. Seeing that you get a full 12,000 mAh of energy (the iPhone 5′s battery is 1,440 mAh for reference), it’s worth the time.

LED-Battery-Lights

While it’s charging the indicator light on the top shows how much you’ve charged up. Shaking the device at any time will also show the charge level, so it’s easy to shake and check to see if it needs a bit more juice before you head out.

Compatibility

Since the output ports are USB, you can plug in an array of smartphones, tablets, and even accessories (I’ve charged up my Bluetooth headphones successfully). Anker provides this non-exclusive list of compatible devices:  iPhone 5s, 5, 4S, 4; Samsung Galaxy S4, S3, Note 2; iPad 4, 3, 2, iPad Mini; Samsung Galaxy Note 10.1, Note 8; HTC One, EVO, Thunderbolt, Incredible, Droid DNA; Motorola ATRIX, Droid; Google Nexus 4, Nexus 7, Nexus 10 and LG Optimus, among other devices.

Wrap-up, availability & pricing

With a sleek design, massive capacity, and simple button-free user experience, the Astro3 is a must-buy for those who need extra energy for their devices wherever they go. It’s available from Amazon for just $49.99 – you can also browse through the over 88 5-star reviews for this high-capacity external battery.

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4 Responses to “Powering your mobile devices: Anker Astro3 12,000mAh external battery and Energizer cup inverter [Dual review]”

  1. krolitian says:

    HAHA! I just got mine 2 days ago! The Astro 3 is a great pack. Charged my 4S twice full and only lost 10%. Way better than advertised.

  2. On Amazon there’s another Astro that packs more power than this one and the both have the same reviews percentage 4.8 out of 5 yet they priced at same $49.99
    It’s Anker Astro E5 15000 mAh.
    and the question is which one deserve going-for?

  3. Has three USB ports – a “smart” port, you can tell the device type, and provide the fastest charge (great iPad and other large pieces) and two universal 5V port – Astro3 three devices charging time

    http://www.sungoldpower.co.uk/