Where do the batteries insert in the Bombardier Bv2s helmet?

Answer 1

The batteries(2 AAs) are tucked in the padding behind your head.

The inside of the helmet comes out in pieces to clean.

The sides near your cheeks come out first, by pulling out the rear of the pad first (tight fit) then a cloth slip from the rear should come out exposing the battery case (black plastic with a strip of foam on it).

You might be able to get at them without removing the sides ,but i think it was easier to do with them out. D .B.