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How to keep your smartphone charged and other tips during a winter storm

WATCH: With weather forecasters predicting a monster storm to roll in to the Northeast today bringing blizzard conditions, NBC’s Dylan Dreyer gives tips on how to prepare for the worst.

TORONTO – Residents in the U.S. Northeast are gearing up for a potentially historic blizzard that could dump up to 90 centimetres (3 feet) of snow on cities like New York and Boston.

The National Weather Service said the storm, known as a nor’easter, would bring heavy snow, powerful winds and widespread coastal flooding through Tuesday. A blizzard warning was issued for a 400-kilometre (250-mile) stretch of the Northeast.

READ MORE: ‘Potentially historic’ blizzard heads for U.S. Northeast, hundreds of flights cancelled

The storm is also expected to make its way to the Maritimes. Environment Canada says southwest Nova Scotia could see 15 to 25 centimetres falling across the province’s mainland. In New Brunswick, forecasters say 15 to 30 centimetres of snow is expected for most of the province, while Prince Edward Island is forecast to get 15 to 25 centimetres.

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New York Mayor Bill de Blasio has warned residents that this could be the worst blizzard the city has ever seen – and many seem to be taking that warning very seriously.

According to Twitter users, many New York-area grocery stores have been left with bare shelves as people get ready for “snowpocalypse.”

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And while groceries and emergency supplies are important, those in #Snowmageddon2015 affected areas should also make sure their smartphones are fully charged in case of a power outage.

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Smartphones and 3G-enabled tablets and other devices are critical for those without power – not just in case of emergencies or to get up-to-date information about the storm, but to stay in touch with family and friends.

Here are some tips to keep your devices running longer during a power outage.

Cut down on app usage and turn off useless features

While a winter wonderland may be an Instagrammer’s dream, cutting down on unnecessary app usage is key in conserving battery power on your smartphone or tablet.

Make sure that any open apps that may continue running in the background of your phone are turned off – iOS users can do this by double tapping the home button on their device and swiping up to turn off any running apps.

Another way to conserve battery power is to turn off any useless or extra features that you won’t be using. This includes turning off Wi-Fi and Bluetooth capabilities, turning off apps that sync constantly (such as email “push” notifications that leave your device constantly checking for new data) and dimming your screen brightness.

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Android users can check the built-in battery usage screen in the settings menu to see what apps are using the most battery power.

Tip: Texting uses less battery power than making a phone call.

Use a laptop with battery power as a back-up charger

It may seem like common sense, but if you have a laptop at home with some battery charge left it can be used as a back-up charger for your device – so long as you have the proper USB cable.

Head to a shopping centre that has power

If you are able to safely get to a shopping centre or mall that has power make sure you bring your charger along with you. Many centres will have outlets that you can use to give your device’s battery a boost – some even have charging centres designed for this.

While you are there, check to see if there is an electronics retailer that sells extra battery packs for smartphones. Phone case maker Mophie makes many “Juice Packs” for both Android and Apple devices, some of which can provide up to 80 per cent extra battery life.

Keep your other electronics in mind

Those without power should also take precautions to protect other electronic devices in their homes for when the lights come back on.

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When power is restored it may result in power surges which cause an increase in the current flowing to your wall outlets and could fry electronics.

Devices like computers, televisions, and stereo systems should be unplugged from outlets just in case. If you have electronics plugged into a surge protector, your best bet is to still unplug the device, just in case the power surge is big enough to overpower the protector.

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