Does a Ford Transit have sealed battery?

No, Ford Transits generally do not have sealed batteries. They typically use flooded lead-acid batteries which require periodic maintenance, including checking the electrolyte level and adding distilled water if necessary. While some newer vehicles might offer AGM (Absorbent Glass Mat) batteries as an option, these are still not technically "sealed" in the sense that they are completely maintenance-free. They are simply low-maintenance compared to flooded lead-acid. Always check your owner's manual to confirm the type of battery in your specific Ford Transit model and year.