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Denis

Member Since: 28 Dec 2010
Location: prairie
Posts: 58

2010 Defender 110 Puma 2.4 SW Stornoway Grey

Battery switch and Automatic charging relay

I have Blue Sea Battery switch (1) - (2) - (1+2) - (Off) and Automatic Charging Relay. Will it work Ok if I connect ACR to contacts 1 and 2 of switch on scheme:

I'd like to use either battery1 or battery2 or both (for start engine, etc.), i.e. when batt1 in use batt2 is charging and when batt2 in use batt1 is charging. Will it work that way?

I understand that Switch is not nessesary, but I already have it

and want manual control.
Cheers Puma 110

21st Sep 2012 4:50pm

bpman

Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black

hi Denis

not sure if your system will work but there is another bluesea system that does exactly what you want. have a look on the mobilecentre website. it runs automatic charging, isolate or joins battery 1+2

Tim at Mobilecentre is really helpful

22nd Sep 2012 6:55am

Denis

Member Since: 28 Dec 2010
Location: prairie
Posts: 58

Hi BPman,
Thanks, I've looked at BlueSea site - they have "add a battery" system - it is 3-position (On-Off-Combine) switch and ACR. But I'd like 4-position switch to use either of 2 batteries as a main(starter) and rest battery for winching/invertor applications only.
So I have to decide how to use components I have.
Cheers Puma 110

23rd Sep 2012 3:28pm

bpman

Member Since: 21 May 2008
Location: Oslo
Posts: 8069

hi Denis

contact Tim at mobilecentre (sponsor) - he's a fountain of knowledge

23rd Sep 2012 6:33pm

Denis

Member Since: 28 Dec 2010
Location: prairie
Posts: 58

pm to Tim sent Puma 110

23rd Sep 2012 6:52pm

mobilecentre

Member Since: 05 Mar 2012
Location: Evesham
Posts: 645

The ACR will combine when it senses engine running so you will not be able to isolate 1 & 2 unless you use an ACR with a switch which then involes more work. You could automate it but this would need more wiring again if I undertand you correctly.

26th Sep 2012 7:36pm

nikojo

Member Since: 05 Aug 2011
Location: Madrid
Posts: 75

Depending on the type of regulator/alternator you have..........be careful switching to "off" while the engine/alternator is operating. If this happens the alternator voltage spikes and this can damage the diodes (regulator) this "frying" your alternator.

You likely have an alternator with an internal regulator that would be immune to this but all the same.

Just dont' switch to "off" until your engine is "off".

12th Nov 2012 4:32am

nikojo

Member Since: 05 Aug 2011
Location: Madrid
Posts: 75

12th Nov 2012 4:33am

Denis

Member Since: 28 Dec 2010
Location: prairie
Posts: 58

Thanks for your insight nikojo!

Meanwhile I decided that my scheme will work o'k

It is similar to this BlueSea explanation of how to use a switch with ACR

Puma 110

12th Nov 2012 2:47pm

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