Tesla (TSLA) - Get Report extended the battery life of certain models for drivers in Florida so they could evacuate, it has been revealed.

Tesla shares were up 3% in early trading Monday to $353.78.

Tesla performed an automatic update on Model S/X60/60D vehicles that unlocked the full capacity of the 75kWh battery, Electrek reported. The update allowed for an extra 30 to 40 miles of driving.

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Tesla used to offer the option to buy a Model S or Model X with a 75 kWh battery pack software-locked at a capacity of 60 kWh. Customers could then pay between $4,500 and $9,000 to unlock the extra 20%, depending on a the model and time of the upgrade

Tesla confirmed that it had given the extra mileage to drivers in the path of Hurricane Irma until Sept.16, after a Model S driver contacted the company saying he would need around another 30 miles of range to evacuate in traffic.

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