Most power banks can charge only one device, but the Lenmar Helix - part of the Undead Power line - can be used to juice up to 3 devices simultaneously - fully charges iPhone 7 times over when at 100% power. It's slightly larger than an iPhone, has 11000 mAh capacity, and has a high output current (5V2.4A Tablet, 5V1A Mobile Phone) that enables you to charge as fast as the individual device allows. Product page. Lenmar is currently giving away one of these for free on their Facebook page, check it out here. Continue reading for more pictures and our lightning review.
For this review, we received both the Lenmar Helix (white) and an Extra Long Lightning Charge & Sync Cable (1.8m). Inside the Helix box, you get the device itself and a microUSB charge cable. The device has a nice glossy (yet very sturdy) casing and should easily slide into any bag.
Right off the bat, we decided to put this device to the true test by charging 3 devices - an iPhone 5, iPod Touch, and iPad - simultaneously. In just 30-minutes, the iPhone (45%) and iPod Touch (57%) were fully charged. Whereas the iPad reached 53% from a fully drained battery before we needed to recharge the Helix. If you're looking for a maximum efficiency power bank that costs under $100, the Lenmar Helix is one product we highly recommend. More information. 5 / 5 stars.