Yes, For various reasons. Mainly, During extrication there could be metal instruments used to get in the vehicle, remove the PT, etc. It prevents the FF/EMTs from beingelectrocuted, or causing sparks which in turn, set the car ablaze.
Source - Volunteer FF
Rapid extrication
open the hood, disconnect both battery negative connectors disconnect both positive connectors, remove both battery hold downs. Remove batteries from vehicle. To install follow the same procedure in reverse order. NOTE: you must remove/disconnect the grounds (both) first-to keep from shorting out the battery from the body/frame and causing a fire or damage.
In batteries and soldering.
What vehicle?
Properly store and maintain your Yuasa batteries for maximum life expectancy. Disconnect the battery cables of an infrequently used vehicle, and charge it every two weeks. Remove the battery from the vehicle. Charge it fully, and store safely away from children. In climates above 60 degrees, recharge the battery every two weeks, and for cooler climates, once per month.
It is illegal to disconnect the air bag on any vehicle.
No that is not necessary. They can be charged on the vehicle.
It does no harm to disconnect the battery when working on a vehicle but in general no, you do not need to disconnect them to change a filter.
I know of no vehicle that is powered by double A batteries, so the question is mute.
Firefighter training should cover fire suppression, emergency medical services first response, vehicle extrication, technical rescue and dangerous goods response.
there is no governer on this vehicle.
Yes