Technician A says that a recombinant battery is usually required where an isolated battery is specified.Technician B says that gelled electrolyte batteries are much less likely to produce corrosion on the battery posts and terminals.Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Both statements are correct. Recombinant batteries, such as AGM (Absorbent Glass Mat) batteries, are often required in applications where an isolated or sealed battery is specified due to their non-spillable nature and ability to be mounted in various positions. Gelled electrolyte batteries, another form of sealed battery, are indeed less likely to produce corrosion on the battery posts and terminals because they do not emit gases in the same way that traditional flooded lead-acid batteries do.