How To Pick A Mobile USB Charger


The best thing about a fully charged battery is that it’s the least of your worries. At that point in time, there’s no concern about gadget failure or emergency shutdowns that interrupt work or cause general inconvenience. However, the fully charged battery state doesn’t last forever; there will come a time when your gadgets will eventually juice out, and you’ll be left combing the area for the nearest AC outlet. It’s in these situations where having a portable, or mobile, charger becomes extremely handy.

What makes the best portable chargers then? There are a lot of factors to consider to adequately answer that question. The battery size of your gadgets and the mobile charger and the price of the latter often determine what best suits specific preferences.

Basics About Rerchargeable Mobile Batteries

For basic information, rechargeable batteries are measured for capacity using milliamperes (mAh). A reliable portable charger should at least match the milliamperes of your gadget. That way, the gadget will reach a fully charged state from a fully drained one. With that in mind, determining the capacity of your mobile charger should just be an exercise in simple addition. If you’re unsure of the size of your gadgets’ batteries, you can look them up in the manufacturers’ web sites or do a Google search with “battery mAh” typed in after the product’s brand and model.

Which Mobile Charger is Right for Your Device

Now, let’s move on to the addition. Once you’ve found out the milliampere capacity of each device, add them up to get your target mobile charger milliampere capacity. That’s it for the most important feature. Let size, shape, and cost suit your tastes. It should be noted that the larger the battery in a portable charger, the more devices you can charge with it.

However, there’s also the downside that with a higher capacity mobile charger comes more weight and more expense. Another thing to note is that you need to carefully consider the capacity of any tablets you’re charging. They vary widely in milliamperes. Case in point: the Kindle Fire HD has a milliampere capacity of 4,400 mAh, but the iPad 3, on the other hand, has an enormous 11,666 mAh capacity. Some devices have no choice but the AC outlet.

Doing the Math

Rick Broida explains:

A rechargeable battery’s capacity is usually measured in milliamperes (mAh). For example, a Samsung Galaxy S3 comes with a 2,100mAh battery, while the iPhone 5 relies on a 1,440mAh cell.

Now, let’s say you’re also packing a Kindle Fire HD. And a Bluetooth speaker. The former boasts a beefy 4,400mAh battery, while the latter might use a 1,500mAh cell.

Assuming you’d want to be able to recharge all three devices, you’d need a charger with an 8,000mAh battery.

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