CI Market Dashboard

We have put together a collection of market indicators and track them to help you gauge the direction of the market.

CI Analysis Worksheets

Interactive analysis templates covering DuPont analysis (return on equity), valuing stocks the Warren Buffett way, and more to come.

CI Blog Feed

An Operating System for the ‘Internet of Things’ by Google?
posted 10 hours ago by Hareesh Jayanthi

Neutral Sentiment Sets Historic Streak
posted 1 day ago by Wayne Thorp

Spotify Adds Video Clips and Audio Shows
posted 2 days ago by Jaclyn McClellan

Google’s Self Driving Cars Taking to the Road
posted 3 days ago by Hareesh Jayanthi

CNNMoney Portfolio Moves to SigFig
posted 4 days ago by Jaclyn McClellan

Computerized Investing > August 4, 2012

Cellink I—Mobile Charger and Card Reader for iPhone/iPad

PRINT | | | | Add your comment! | A A   Reset

by Wayne A. Thorp, CFA

Cellink I—Mobile Charger and Card Reader for iPhone/iPad


Whenever I travel these days, I have a ditty bag devoted to charging cables and adapters to keep all my devices charged and synced. I recently was given a device that tries to cut down on the clutter in your travel bag—the Cellink I. The little device, which is a bit bigger than a typical USB thumb drive, combines the functionality of a backup battery, microSD/SDVC card reader, USB charger and sync cable for Apple devices (iPhone, iPod and iPad).

Out of the Box

As mentioned earlier, the Cellink I is kind of like a portly thumb drive that can still easily fit in your pocket. For carrying it around, it has a plastic carrying case, which makes its dimensions roughly 2.75 inches by 1.25 inches by 0.5 inches. There are three LED lights on the top of the Cellink I: red is for charging; blue indicates sync in progress; and green indicates fully charged.

Backup Battery

At its center, the Cellink I is a portable emergency backup battery. With its 600 mAh capacity, it isn’t designed to fully charge your iPhone, let alone your iPad. However, it will give an iPhone 4S and its 1,432 mAh battery a 40% boost, enough to tide you over until you can find a plug. Charging is slower than when done with an AC adapter or when plugged into a USB port on a computer.

USB Charger

On one end of the Cellink I is a USB adapter, which plugs into a USB port on a computer or into a USB charger. The other end of the Cellink I you can use instead of a charging cable for your Apple device. There is also a 30-pin Dock Connector that plugs into your iPhone. I prefer the charging cable, mainly because it affords flexibility of where you place your device while it’s charging. Charging your device with the Cellink I is really only feasible with a laptop, as you need a flat surface even with the laptop to rest your device while it charges.

Data Sync

When you connect the Cellink I to your Apple device and plug it into a system with iTunes installed, you are also able to sync your device with iTunes. Furthermore, when you are syncing, the Cellink and your Apple device charge automatically.

Micro SD/SDCH Storage

The Cellink I also has a micro SD/SDHC slot for storage purposes. While on paper this sounds like a useful option, in reality it’s probably not something many Apple device owners would use, since Apple devices don’t have an SD card slot. There is a sister product, Cellink U, that is designed for those phones that use the micro-USB charge port; it comes with adapters for Android and Blackberry phones, which are more likely to have an SD slot.


The Cellink I is one of those gadgets that comes in handy in an emergency. It’s not something I would use to replace a charging or syncing cord, but its usefulness as a battery backup cannot be underestimated. That being said, at $50, the Cellink I is a little pricey for its primary function—charging your iPhone by about 40%. Of course, when you are saddled with a dead phone, $50 for that 40% battery boost, especially in such a compact form, may be a steal.


  • 600 mAh battery backup
  • Small form factor
  • Charging & syncing capabilities


  • Lack of flexible charging/syncing cable
  • A bit pricey for only 600 mAh battery capacity

Cellink I—Mobile Charger and Card Reader for iPhone/iPad



Wayne A. Thorp, CFA, is the author of “Gadget Corner.” All reviews are based on firsthand experience of the product or service. No third-party compensation is received for opinions on products, services, websites or topics. However, sometimes the author is not required by the manufacturer or their PR firm to return the product under review. In such instances, it is our policy to convey this within the review. The views and opinions expressed in these reviews are strictly those of the author. Any product claim, statistic, quote or other representation about a product or service should be verified with the manufacturer or provider.

Wayne A. Thorp, CFA is a vice president and senior financial analyst at AAII and editor of Computerized Investing. Follow him on Twitter at @WayneTAAII.


No comments have been added yet. Add your thoughts to the discussion!

You need to log in as a registered AAII user before commenting.
Create an account

Log In