D2 night heater help its cold out side

An alchemy of sparks, copper wire and earth

Moderators: User administrators, Moderators

User avatar
Oldiebut goodie
Registered user
Posts: 7501
Joined: 18 Apr 2008, 01:19
80-90 Mem No: 11135
Location: Eastern Angle

Re: D2 night heater help its cold out side

Post by Oldiebut goodie »

I'll try one last time - what is the voltage whilst the heater is starting?
1.6D 2019 VW T-Cross
200hp VW T6
1̶Y̶ ̶1̶9̶8̶7̶ ̶H̶i̶-̶t̶o̶p̶ ̶C̶a̶r̶a̶v̶e̶l̶l̶e̶
5̶0̶8̶d̶ ̶M̶e̶r̶c̶

California Dreamin
Registered user
Posts: 2673
Joined: 03 Apr 2007, 12:54
80-90 Mem No: 8386
Location: Nottingham

Re: D2 night heater help its cold out side

Post by California Dreamin »

When a consumer like a night heater draws current from a battery it's initial 'start up' current will be higher than when it is running. This extra load can drop the battery voltage below the heaters 'cut in' parameters and this is why a heavier supply cable and soldered joints are recommended to minimize the voltage drop and these associated problems.

You really do need to measure the supply voltage AT THE HEATER during initial heater startup ENGINE OFF


Martin
1989 California 2.1MV

User avatar
budice83
Registered user
Posts: 94
Joined: 15 Apr 2010, 09:08

Re: D2 night heater help its cold out side

Post by budice83 »

Hi there

With the engine turn off and the night heater switch on
firing up the voltage is 12.83 at the heater

Sorry For for any mix up and there is no cuts in my wire and everything has been soldered

http://www.alpha-batteries.co.uk/leisure-batteries/" onclick="window.open(this.href);return false;

Locked