Who wouldn’t want a whopping punch of battery refilling goodness halfway through the day (or that long coast to coast flight)? Check out the Anker Astro 6000mAh – that’s enough battery power to refill most smartphones a good three or four times. It’s a lot of punch in a small package.
Anker Astro 6000 mAh External Battery Charger Features at a Glance
- Compatibility: works with every smartphone and tablet model
- PowerIQ™ smart power port technology identifies connected devices – guaranteeing the fastest charge time for EVERY device
- Small, lightweight design (weighs about 130 grams) in three colors (black, lime, yellow)
- 6000 mAh of capacity = 2-4 smartphone recharges, depending on phone’s own battery capacity (iPhone = about 3 full charges, Galaxy = about 2 full charges)
- Shake it to start a charge or display remaining power level.
- Sturdy construction and matte finish to withstand all manner of abuse
- Grade A cells and premium chips ensure reliability. Input: 5V / 1A; Use a 1A adapter (not included) with the included USB cable for the fastest charging time
- Charges to full in 6 hours
- 500+ charge cycles
- 18 month warranty
Package contents: Anker® 2nd Generation Astro External Battery, 12″ long micro USB cable, protective bag for charger, user manual.
Anker Astro 6000 mAh External Battery Charger Review
Portable power -it’s one of those little things that just makes life easier.
Recharge your phone anywhere – no need for an epic battle to the death over the one outlet in the entire airport or car. And it’s so small, you’ll have to remember not to wash it with your pants.
Anker Astro 6000 Charging Capabilities
Connect your device to the charger and with the proper cable and the battery pack charging starts automatically.
The “6000” refers to how many mAh or “milli-ampere-hours” the battery contains. In practice, the typical capacity is about 30% less than the advertised mAh.
You can find out how many mAh your phone or tablet battery has and compare it to the capacity of a charger to figure out roughly how many charges you should be able to get from the battery pack. For example, an iPhone 5 has a 1,440 mAh battery. Some charge is “lost” in the charging process as heat, voltage conversion, powering the internal electronics of the battery itself (this is normal). The Anker Astro operates at about 83% efficiency, which is considered excellent (most battery chargers operate around 70% efficiency). In practice, the Anker Astro offers about 4700 mAh of battery juice for your phone.
With 4,700 mAh actually available to your phone, the Anker Astro 6000 could recharge a dead iPhone 5 about three times. The Nexus 4, with its 2,100 mAh battery, could get just over two full charges out of the Anker Astro 6000.
Here’s a few common smartphones and how many charges they should be able to get out of the Anker Astro:
- Galaxy S5 (2,800 mAh): almost 2 full recharges
- HTC One M8 (2,600 mAh): almost 2 full recharges
- iPhone 4S, 5, 5S, 5C (1,432 – 1,570 mAh): about 3 recharges
- iPad 2 (6,944 mAh): about 70% of a full recharge
- iPad 3 (11,560 mAh): about 40% of a full recharge
- iPad mini (6,470 mAh): about 70% of a full recharge
- Kindle Fire (8,400 mAh): about 55% of a full recharge
- Nexus 4 (2,100 mAh): about 2 full recharges
- Sony Experia C (2,390 mAh): about 2 full recharges
Most full-size tablets have around 11,000 mAh battery capacity – nearly twice what the Anker offers. The Anker Astro is too small to be of much use if you need to charge a tablet.
We love the Anker Astro’s smart USB port with PowerIQ technology to detect your device’s charging capability and adjust to it. This feature enables the Anker Astro to work with a huge variety of devices, even those purchased overseas.
The Anker battery itself takes about 6 hours to charge from empty to full if you charge it from an AC wall charger (AC wall charger not included, which we agree is pretty stale). Charging via USB 2.0 is much slower – about 11-12 hours.
Your phone or tablet’s charge speed is determined in part by the cable you’re using to charge it.
Anker Astro 6000 Physical Design
- So small, you might forget you’re carrying it around
- LED capacity indicator
- Tough and rugged design (don’t throw it into a canyon or anything though)
- Comes in 3 sweet colors
- Matte paint is resistant to scratching
Hope you like yellow and green, because those are your color options. We think the colors are great because they help the device stand out in an otherwise dark bag.
Bonus: the Anker Astro never seems to get hot or overheat the phone it’s charging.
LED Capacity Indicator
- Light ring “animates” as it charges
- Shake the Anker battery to light up the ring and see how much juice remains
To check the battery pack charge status you have to shake the battery and the LED ring lights up.
For device compatibility, you can’t beat the New Trent iCarrier IMP120D. If you’re using phones or tablets by major manufacturers like Apple, Samsung, Nokia, Sony, etc, you won’t have any compatibility issues.
Bring Your Own Cable
Like nearly all external battery chargers, the Anker Astro assumes you already have a charging cable on hand for your device. As long as your charge cable has a USB plug on one end to plug into the Anker Astro, you’re good to go.
Note: The Anker Astro does not not come with an AC wall adapter! If you’d like to charge this thing from a normal electrical outlet, you’ll need an AC to USB adapter. We recommend the highly-rated and very affordable dual-port New Trent NT90C wall charger.
For less than $30, the Anker Astro 2nd Gen 6000 is a slam dunk. With nearly 1,000 positive Amazon reviews, it’s hard to argue with the utility of a compact external battery for your smartphone.