The battery light on a Ford Focus means that the battery is not charged. This could be due to the battery being bad and not wanting to charge anymore at all. It could also be that the lights were left on overnight and that the battery has drained but is otherwise fine. This will need You to jump the battery in order to get it to start. Finally, You may have something wrong with Your alternator, which means the battery will not charge. If left alone then the battery may drain and not be able to charge at all. A new battery will cost You between 110 to 130 dollars, while a new alternator will cost You about 400 dollars.
Already replace alternator but battery light still on
Irene M.
April 10, 2020
The battery light on the focus indicates that there is a battery charging problem. If this light stays on there may be a broken alternator belt.
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