We have a serious fetish for portable battery packs, power banks, external battery’s or which ever you choose to call them. We have showcased the New Trent 12,000 mAh power bank, the Anker Astro 3, Anker Astro 3e and a slew of other power options that can help you get the most out of your device when there isn’t a physical power plug or supply available to you. Our history with Anker has afforded us the chance to take a closer look at their latest power bank, the ultra slim Astro Slim2. It is amazing to see how power banks, battery size, design and pricing has progressed over the last couple of years. The Astro Slim2 is the perfect example of how things can move forward and not break the bank account at the same time.
Whats in the Box
- Astro Slim2 4,500 mAh power bank
- Micro USB data cable
- Micro USB – mini USB adapter
- Micro USB – Apple 30-pin adapter
- Instruction manual
The Internals of the Astro Slim2
Obviously the Slim2 is a portable power bank. It ranks in with a 4,500 mAh built-in battery. That should offer most phones 2 – 3 full charges while on the go. Some of that will depend on your device, if you are using it to stream movies while charging and various other factors. In the case of devices like the Samsung Galaxy Note II for instance, you should get a full charge plus maybe a little kicker as the internal battery of the Note II is 3,100 mAh. The output on the power bank is 5 Volt 1 Amp which will give your device a ‘quick charge’ as it is called. As an example, I plugged my S III in at 54% and set them on the desk. I went from 54% to 67% in 18 minutes. A 13% jump in a short amount of time. It is already at 72% in the last 10 minutes.
The Externals of the Astro Slim2
Internal power and specs are a good thing to know, but the design andÂ functionalityÂ of the Slim2 are what makes it aÂ compellingÂ device to want to add to your gadget collection.Â ExternallyÂ most people want things to look stylish, be small, and make life easier when ever possible. The Slim2 delivers all of this check out the physical specs get a good idea of the size of this power bank.
- 5-inches long
- 2.5-inches wide
- 0.4-inches thick
- Weighs 4 oz
To compare it to something else that a great number of you have held, have used or owned, I snap some shots of the power bank sitting on, above and next to my Samsung Galaxy S III. The S III specs are 5.38 x 2.78 x 0.34 in and weighs 4.69 oz.Â Take a look.
You will also notice that the power bank offers one built-in Micro-USB charger. That is tucked nicely inside the charging port. Grip it and pop it out and plug-in your phone. Anyone that has a 2 foot long charging cord connected to a power bank knows how annoying a long cable sticking out of your pocket can be. This small addition to the Slim2 extremelyÂ convenientÂ to have around. With the included Micro USB to 30-pin and mini USBÂ adapters, you are pretty well set for power for your device, and the occasional friend that might own ‘the other guys’ products.
On the top in the middle you will find a series white LED lights. There are a total of four and there to indicate how charged the battery is when it is charging and also how much charge is left when charging your phone. Four lights is 75% to 100%, three lights 50 to 75% and so one. You get the idea. It is your typical general power meter.
What I liked most about the Anker Astro Slim2
It is small, compact and easy to use. I don’t have to worry about packing a charging cable since it has one built-in. Being able to charge two devices at the same time isÂ definitelyÂ nice, especially if you have an MP3 player or work and personal phones that you carry often. Not having to worry about an on/off button or switch is nice as well. The Slim2 automatically turns on when you plug something in and shuts off when it isn’t connected to anything.
What I didn’t like about the Anker Astro Slim2
The additional adapters are nice, but they are small connectors. It would be very easy to lose them. Anker doesn’t provide any means of transporting the power bank, connectors and small cable. It would be nice to have a small nylon style branded draw string bag. The USB port being on the side vs the top or bottom poses an interesting issue if you are trying to charge a device in your pocket using a different cable. It would be just fine for table top charging, and of course for charging a second device, which you wouldn’t put all three in your pocket to begin with. However, this got me to thinking why you would use a different cable to charge your device. Other than possibly using a longer cable to keep the battery in your pocket while just using your phone. If it isÂ becauseÂ you need to charge your mini USB or iOS product, you would just attach the connector to the built-in cable.
Other useful information
- Charging from a PC or Laptops USB 2.0 port could take as long as 10 hours to charge up the power bank.
- The kit does not include an AC wall adapter, not an issue since you can use your current devices adapter.
- It can be recharged 500+ times and comes with an 18 monthÂ warranty. If you use it daily, you have about a year and half of life.Â
- While rated at 4,500 mAh, you have to consider charge loss during the charge process. Â Estimates place it between 70 and 80%Â usableÂ power. So 3,150 mAh to 3,600 mAh.Â
If you find your self running low on battery, searching for chargers, power plugs or a PC to juice up frequently, then you should consider picking this product up. It delivers what it says it will and looks good doing it. Typical power banks we have seen in the past in 5,000 mAh range can run you upwards of $60, easily. Many of which don’t give you any addition cords or adapters. The Anker Astro Slim2 is coming in at a modest $27.99. That means you can get one and sacrifice one pizza night to afford it. If you have the cash now, click the Amazon link below to go get one ordered today. While you are there, take a look a some of their other products, or visit their website at ianker.com
AnkerÂ gave me this product in exchange for my honest feedback