P38A Split charging system?

Henry_b · Jan 24, 2019

Is it possible to fit the above to a P38?

Been thinking of doing this as i plan to have some fun in my P38 in the future, some touring and travelling etc etc and thinking a 2nd battery would be handy as a reserve.

Is this possible on the 38a and what kind of systems can i fit?

Many Thanks as always

H

Datatek · Jan 24, 2019

Henry_b said:
Is it possible to fit the above to a P38?

Been thinking of doing this as i plan to have some fun in my P38 in the future, some touring and travelling etc etc and thinking a 2nd battery would be handy as a reserve.

Is this possible on the 38a and what kind of systems can i fit?

Many Thanks as always

H

It's possible fit split charging on any car. If both batteries are of the same capacity, it can be done very simply, although where you would find space to fit another battery of the same size as the starter battery I do not know.
For odd size batteries, there are smart regulators that require removal of the alternator internal regulator and will safely charge different batteries.
There are many different systems, Google will give you many options.

Henry_b · Jan 24, 2019

Datatek said:
It's possible fit split charging on any car. If both batteries are of the same capacity, it can be done very simply, although where you would find space to fit another battery of the same size as the starter battery I do not know.
For odd size batteries, there are smart regulators that require removal of the alternator internal regulator and will safely charge different batteries.
There are many different systems, Google will give you many options.

Thanks Data

Appreciated.

wammers · Jan 24, 2019

STC8875 AB is the split charge accessory kit for the P38, but bet you can't find anybody that stocks them and you would possibly need a mortgage to buy it if you could

Henry_b · Jan 24, 2019

wammers said:
STC8875 AB is the split charge accessory kit for the P38, but bet you can't find anybody that stocks them and you would possibly need a mortgage to buy it if you could

Maybe i'll get lucky

Doubt it but maybe

Thanks.

tomcat59alan · Jan 24, 2019

Henry_b said:
Maybe i'll get lucky

Doubt it but maybe

Thanks.

Check out the vm engined Classic's wiring diagram, my G reg had two batteries and a split charging system

Datatek · Jan 24, 2019

tomcat59alan said:
Check out the vm engined Classic's wiring diagram, my G reg had two batteries and a split charging system

My Shogun also had 2 batteries, if I remember rightly split charging was done simply with a relay that connected the ancillaries battery to the alternator when the D+ line changed state. It was great as you could never flatten the starter battery by accidentally leaving lights on. I would like to do that on the P38, but where to put the second battery?

tomcat59alan · Jan 24, 2019

Datatek said:
My Shogun also had 2 batteries, if I remember rightly split charging was done simply with a relay that connected the ancillaries battery to the alternator when the D+ line changed state. It was great as you could never flatten the starter battery by accidentally leaving lights on. I would like to do that on the P38, but where to put the second battery?

Roof rack?

Not much room under the bonnet.

Datatek · Jan 24, 2019

tomcat59alan said:
Roof rack? Not much room under the bonnet.

Trailer?

tomcat59alan · Jan 24, 2019

Datatek said:
Trailer?

Tow a Prius?

Datatek · Jan 24, 2019

tomcat59alan said:
Tow a Prius?

LOL

Actually a Li-Ion jump starter battery pack might be the way forward, very small and very powerful. Need to check the charging requirements though.

gstuart · Jan 24, 2019

Henry_b said:
Maybe i'll get lucky

Doubt it but maybe

Thanks.

Hi

If it any good , I fitted one of these

https://www.jgs4x4.co.uk/t-max-12v-...charging-system-relay-digital-status-monitor/

Henry_b · Jan 24, 2019

gstuart said:
Hi

If it any good , I fitted one of these

https://www.jgs4x4.co.uk/t-max-12v-...charging-system-relay-digital-status-monitor/

That looks interesting G

gstuart · Jan 24, 2019

Henry_b said:
That looks interesting G

Took me a while to fit as I’d never done one before but very happy with it

Henry_b · Jan 24, 2019

gstuart said:
Took me a while to fit as I’d never done one before but very happy with it

View attachment 168174 View attachment 168175 View attachment 168176 View attachment 168177

View attachment 168179

Great fit and finish!!

Handy Diagram too!

Very nice.

Henry_b · Jan 24, 2019

Odd that there is so much room in the V8's engine bay, yet so few flat surfaces you can actually mount stuff to.

Maybe if i'm clever enough another battery could go in place of the airbox and the air is handled with a shorty cone filter and some solid plastic hosing to attach the air flow sensor to.

decisions decisions!!

gstuart · Jan 24, 2019

Henry_b said:
Great fit and finish!!

Handy Diagram too!

Very nice.

Many thks, know it took me ages to get it all done, inc looking for conduit Y pieces etc ,

Glad the diagram may be useful to u

Tidy engine bay you’ve got there, indeed does look full, lol

Henry_b · Jan 24, 2019

gstuart said:
Many thks, know it took me ages to get it all done, inc looking for conduit Y pieces etc ,

Glad the diagram may be useful to u

Tidy engine bay you’ve got there, indeed does look full, lol

It will be useful G, will take me forever to do though!!

I'm also planning on fitting a coolbox in the rear, that'll be powered by the stock power outlet in the boot!!

So many plans!!

Hopefully i actually get to drive and do the travelling i want to do in this car

gstuart · Jan 24, 2019

Henry_b said:
It will be useful G, will take me forever to do though!!

I'm also planning on fitting a coolbox in the rear, that'll be powered by the stock power outlet in the boot!!

So many plans!!

Hopefully i actually get to drive and do the travelling i want to do in this car

Same with me in the amount of time it took, little things like running cables run through the bulkhead , fused correctly , etc

Found this other link, hope it may be useful

https://www.rangerovers.net/rrupgrades/dualbattery.html

Indeed ref to plans , also got my list for little projects which I hope I can start in the spring

Henry_b · Jan 24, 2019

gstuart said:
Same with me in the amount of time it took, little things like running cables run through the bulkhead , fused correctly , etc

Found this other link, hope it may be useful

https://www.rangerovers.net/rrupgrades/dualbattery.html

Indeed ref to plans , also got my list for little projects which I hope I can start in the spring

That battery placememnt in the boot is genious!!
Thanks G that is very helpful..

Didn't think of the boot at all!!

I'm looking at it and can see a good sized battery could fit back there!!

P38A Split charging system?

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