With its lineup of battery cases in various sizes, shapes, and capacities, Powerocks has a pretty wide range of solutions covered. It’s offering everything from a tiny, credit card-sized 1500mAh pack — Tarot ($35) — to Magic Cube ($90); we received the 9000mAh version, but there are also 6000 and 12000mAh capacities. In the middle is Magicstick ($50), a 2800mAh, 1-Amp battery that’s very similar to Power Tube batteries we’ve previously seen from Mipow. Although they each come with a cloth carrying bag, none of the packs includes a Lightning or Dock Connector cable. Instead, you must provide your own cable, plugging it into the battery’s full-sized USB port. Tarot and Magicstick include Micro-USB cables for recharging, while Magic Cube has a USB plug built-in. Updated: This article was originally published on May 14, 2013. Below, we’ve updated it with photos and details for another model called Rose Stone, as well as a 12000mAh Magic Cube.
Tarot is the smallest of Powerocks’ battery packs. It’s just as wide as a credit card, and only a little taller, with a thickness equivalent to roughly 10 cards stacked atop one another. The top and bottom panels are aluminum, while the outer edge is a continuous piece of white plastic. In addition to the full- and Micro-USB ports, there’s a power button on top, and four battery indicator lights; all in all, it’s really quite simple.
While it doesn’t feel as polished as a product from Just Mobile or another company known for similarly high-quality accessories, Tarot feels pretty good for a $35 battery.
We tested this battery on a fully-drained iPhone 5. It’s worth noting that the USB plug doesn’t fit all the way into Tarot, leaving about 4mm of metal exposed. This is likely a design chosen to save space. The pack was able to deliver a 64% charge, which is just a few percentage points lower than we would’ve expected from historical averages. Considering the low price and small size, it’s a pretty good performer.
Moving up the line brings us to Magicstick. We’re not sure what the relationship is between Powerocks and Mipow, but the similarities between their tube-shaped packs is obvious. This one’s just about 3.5” long, and about 7/8” in diameter. Silver, black, red, blue, and purple versions of the battery are listed on the company’s website, although we received an unlisted gold-colored model for review. Again, Powerocks went for simplicity here: on one end of the tube you’ll find the power inputs and outputs, while the other side is a button with an embedded LED to let you know how much charge is left.
Although it only puts out 1 Amp of power, we tested Magicstick on a third-generation iPad due to its relatively high capacity. It was able to deliver a better than average 17% charge.
This indicates good things for the battery being used with an iPhone or iPod; one should see a full recharge plus another 25% or so, based on that figure. Once again, the USB plug fits most, but not all of the way in; this one is also particularly tight.
Finally, there’s Magic Cube. Naturally, the largest capacity battery of this group has the biggest footprint, and is the heaviest. It’s 2.75” wide, 3.25” long, and a little over 0.75” tall. This one comes in black, silver, blue, purple, or pink aluminum; all five colors have black plastic caps on either long end. One stays in place, with a power button and four LEDs in a column beneath it, while the other one can be pulled off to reveal integrated Micro-USB and USB plugs, plus a USB port. This cap is attached with a small tether so that it doesn’t get lost, and a small divot allows the Micro-USB cable to poke through with the lid closed.
Of the bunch, this one is best-suited for iPad charging, as it puts out 2 Amps of power. While that number falls short of the 2.4-Amp peaks of third- and fourth-generation iPads, it’s at least better than the otherwise very slow 1A. We tested Magic Cube with a fully discharged third-generation iPad, and found it delivered a 55% charge, which was once again right in the range we were expecting.
