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Landie Boy

Member Since: 14 Jan 2011
Location: Essex
Posts: 431

2010 Defender 110 Puma 2.4 USW Stornoway Grey

Towing electrics

Hi guys,

I've been reading about charging trailer batterys with the defender using the S type connector that Land Rover provide for towing.. One thing that keeps popping up is the need for a battery isolator to prevent draining issues etc. Does the defender have one as standard?

Thanks Jack

25th Mar 2012 10:38pm

RFT

Member Since: 13 Nov 2010
Location: Cheshire
Posts: 678

2010 Defender 130 Puma 2.4 HCPU Zermatt Silver

The battery in my camper is charged via Euro style trailer plug, wired into lights as normal but the battery feed is via a charger unit in the camper, that only charges batteries once ignition is on.

The charger feed is fed directly from the battery via its own 20A fuse

The "ignition on" signal is taken from the heated seat relay under driver seat as this has an "ignition live" signal.
Some use the front heated screen arrangement that only permit charging once he oil pressure registers ( I.e. only charge once engine running) but this is complex to install and unnecessary as the caravan charger units normally only permit charging once voltage from LR reaches 13.5 volts I.e engine running and LR battery substantially charged.

Never allow batteries in trailer to be directly connected to the LR battery without a charger unit, controlling it as you might need a fire extinguisher when one battery tries to cook the other one. 130 Puma HCPU with an Artica 240LR Demountable Camper

26th Mar 2012 12:13am

Landie Boy

Member Since: 14 Jan 2011
Location: Essex
Posts: 431

RFT wrote:
The battery in my camper is charged via Euro style trailer plug, wired into lights as normal but the battery feed is via a charger unit in the camper, that only charges batteries once ignition is on.

The charger feed is fed directly from the battery via its own 20A fuse

The "ignition on" signal is taken from the heated seat relay under driver seat as this has an "ignition live" signal.
Some use the front heated screen arrangement that only permit charging once he oil pressure registers ( I.e. only charge once engine running) but this is complex to install and unnecessary as the caravan charger units normally only permit charging once voltage from LR reaches 13.5 volts I.e engine running and LR battery substantially charged.

Never allow batteries in trailer to be directly connected to the LR battery without a charger unit, controlling it as you might need a fire extinguisher when one battery tries to cook the other one.

Thanks

do you know what charger you have?

Jack

26th Mar 2012 1:12pm

RFT

Member Since: 13 Nov 2010
Location: Cheshire
Posts: 678

I'm away at the moment, will try to look up on internet to see if I recognise it.
Richard 130 Puma HCPU with an Artica 240LR Demountable Camper

26th Mar 2012 3:12pm

Landie Boy

Member Since: 14 Jan 2011
Location: Essex
Posts: 431

Thanks

Jack

26th Mar 2012 5:41pm

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