Why is the 2013 ford f150 battery light on?

When the battery light comes on in the 2013 Ford F-150 it is a warning that there is a problem with the vehicle's charging system. This means that the issue is going to either be related to the battery or the alternator. If the problem is with the battery, it may just need to be jumped or the terminals might need cleaning, if they are corroded. If the battery is more than three years old, it probably needs to be replaced. You will need a group size 65 battery capable of 750 cold cranking amps. The average cost to replace a battery in a 2013 F-150 is between $190 and $210. Labor accounts for $30 to $50 of that total. Sometimes, the light comes on to let You know the vehicle is not operating within its voltage paRameters. This is a usually an alternator issue. Replacing the alternator will generally cost between $450 and $490 with labor comprising $80 to $100 of that amount.