is it possible to use charge 12v batteries (bought here in the states) with a EU charger? since they have 10.8V batteries over there.....but does it make a difference? the batteries looks the same. asking because there is a guy who bought the bosch heated jacket here in the states. he cant charge his batteries in UK because of the wrong charger. he bought a charger for like 10bucks (no-brand one) in UK but it blew up. I was thinking about, that he can buy the original Bosch charger from Germany and just stick in the 12v batteries... what you guys think?