BATTERY LIFE ON THE IPHONE

After we reviewed some battery basics in a recent column, readers who own iPhones and iPads wanted more. There’s much you can do beyond looking at “Usage” in the “Settings” area to find where the battery hogs are.

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CELL PHONE BATTERY WOES

The battery in the Samsung Galaxy S3 smartphone is supposed to last for 18 hours on standby, 10 hours if you’re talking, 8 hours if you’re playing a video. We’ve been lucky if ours lasted half that. A free app called “Greenify,” along with some basic adjustments, has made a big difference. Greenify for Android phones hibernates any apps you don’t need to have running. Our phone stays on for at least 18 hours now, with light use. Some apps, such as the Amazon Kindle app, take a little longer to load with Greenify running in the background, but that’s better than a phone that dies when you don’t expect it. Before Greenify, we tried several other battery life extenders: […]

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GETTING A CHARGE

Another day, another charger. We’ve been flooded with these things, but some are unusual.

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GETTING A JUMP

Get ready to cancel your Automobile Club membership. “Jumpr” is the size of a cell phone and can start a dead car battery.

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BATTERY

We heard from a reader who has a Kindle just like ours but its battery failed to take a charge. Amazon customer service told her to buy a new one, though her Kindle was only a year old. (They’re pushing it; don’t buy a new one.)

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BATTERY LIFE LOST

Why does the battery on your smart phone drain so fast? They’re all against you, that’s why. Here’s a list of the bad guys now:

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BATTERY DOCTOR

A young relative visiting us this summer noticed how quickly our Samsung Galaxy S3 went dead. A free app called “Battery Doctor” fixes that.

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GETTING A CHARGE ON THE ROAD

For months, we’ve been walking around with a naked Galaxy S3. Often it’s a dead Galaxy. We wanted a case we could get a charge out of.

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CHARGING YOUR PHONE

Our new Galaxy S3 phone has a removable battery. So rather than carry a charger or a cable to plug into a wall outlet, we carry an extra battery. But most smart phones and tablets don’t have this option.

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BUYING A NEW LAPTOP

Ultra-thin laptops are often called “ultrabooks” and look a lot like the Mac Air. They’re popular because of their light weight and long battery life. They use solid state drives (memory chips), so they’re fast and you don’t need to carry discs. The downside for many models is if the battery needs replacing, you have to send it back to the manufacturer. Only the Sony Vaio T13 and HP Elite Book Folio 9470 have user replaceable batteries.

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