Battery Isolation Switch

Author
Discussion

Greenmantle

Original Poster:

1,635 posts

121 months

Monday 31st March
quotequote all
Have a Mercedes BEV and I was wondering if it has a Battery Isolation Switch (High Voltage). Some one on here showed the one for a BMW i3 and it got me thinking.

blank

3,653 posts

201 months

Monday 31st March
quotequote all
Not a switch as such but there will be a main service disconnect aka MSD.

If you Google the emergency responder guide for the model you'll probably find where it is.

Not something you should go disconnecting for the fun of it though.

TheDeuce

27,685 posts

79 months

Tuesday 1st April
quotequote all
blank said:
Not a switch as such but there will be a main service disconnect aka MSD.

If you Google the emergency responder guide for the model you'll probably find where it is.

Not something you should go disconnecting for the fun of it though.
Indeed - there are some switches that it's best the casual user don't get to switch!

I don't really understand why the ability to do so would be desirable for the driver anyway? The only EV related dangers we have seen which are related to the electrical system are battery faults - thermal runaway, which takes place ahead of such a switch and will continue regardless of what is disconnected.

Having said that... I'm reminded of the early days of EV where a few drivers claimed their car was 'uncontrollably accelerating', but it turned out they were trying to dodge speeding tickets by making up phantom acceleration laugh


ashenfie

1,170 posts

59 months

Monday 7th April
quotequote all
In an accident it would alway be disable to be able to make safe any electrics much like as the fire brigade do with ICE cars. Most ICE drivers are unaware of the location of the fuel pump shutoff valve.