Quickest way to isolate the battery?
Quickest way to isolate the battery?
Author
Discussion

AMG Merc

Original Poster:

11,955 posts

282 months

Sunday 4th January 2009
quotequote all
Does anyone have thoughts as to the best way to isolate the battery in a hurry (eg: to stop the alarm, etc.). I mean which fuse or relay is easiest to access - apart from fitting a proper kill-switch? No problems just wondered just in case. Cheers.

MrFlibbles

7,786 posts

312 months

Sunday 4th January 2009
quotequote all
Tell it you faked every orgasm?

sean_goodman

536 posts

232 months

Monday 5th January 2009
quotequote all
alarm has a battery back up

Adrian W

15,493 posts

257 months

Monday 5th January 2009
quotequote all
Fit an isolator

AMG Merc

Original Poster:

11,955 posts

282 months

Monday 5th January 2009
quotequote all
sean_goodman said:
alarm has a battery back up
Of course, I didn't realise this. Anyone care to suggest how often it should be changed?

ThatPhilBrettGuy

11,810 posts

269 months

Monday 5th January 2009
quotequote all
AMG Merc said:
sean_goodman said:
alarm has a battery back up
Of course, I didn't realise this. Anyone care to suggest how often it should be changed?
If the main car battery has failed to to going flat once too many times, the alarm battery will probably be dead as well. I'd bet about 75% or more alarm batteries are for the bin by now.

sean_goodman

536 posts

232 months

Monday 5th January 2009
quotequote all
is it not a rechargable battery in the siren body which will maintain its charge through the vehicle electrical system?

to my knowledge the siren gets 3 wires

plus V
ground
trigger

when the vehicle battery is recharged i should think the alarm battery will soon recharge itself

ThatPhilBrettGuy

11,810 posts

269 months

Monday 5th January 2009
quotequote all
sean_goodman said:
when the vehicle battery is recharged i should think the alarm battery will soon recharge itself
It won't if it has gone totally flat a few times.

daddysumo

2,545 posts

242 months

Monday 5th January 2009
quotequote all
Arm the Alarm wait a min or two then pull one of the battery terminals off and see if the siren goes off or not!
You will soon know if the back up battery is charged !!