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Tesla boosts range for some vehicles in Florida to escape Irma

As Hurricane Irma was bearing down on Florida, Tesla Inc. sent a free software update extending the battery capacity for some of its vehicles, giving those owners extra range to flee the looming storm.

The update temporarily unlocked the full battery potential for 75-kilowatt-hour Model S sedans and Model X SUVs, adding another 30 to 40 miles to their range. The upgrade was first reported Saturday by the electric-car blog Electrek.

Starting in 2016, Tesla offered cheaper versions of the Model S and Model X with limited battery capacity. While they have a 75-kWh battery, software on those versions limits customers to using about 80% of available power, with a range of 200 to 230 miles per charge.

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