Vehicle & Technical > Defender

Is an 85A relay big enough for a split charger in my TD5 90?

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Terranosaurus:
But if you're running a winch off you're second battery with the engine running it will draw every last bit it can from the alternator, thus you really need a 120amp relay, some of the 120amp available will be usedby the vehicle but this gives you a small safety margin on the relay.

SteveG:
I would fit a larger relay. You can get one from the likes of X-Eng,  http://x-eng.co.uk/X-Charge.asp, or buy and build yourself

Cheers

Steve

vtrdaz:
Thanks chaps
I wont ever be fitting a winch - it's only going to be used for charging the second battery which will run a fridge and a few other low power stuff like phone chargers , so it should be fine.

Darren

jjsaul:
anyone know what the rating is on a standard rangie 3.5 alternator?

i want to fit a split charge on my offroader but will be running a 9000lb winch off it...

solihull-mick:
All the split charge systems ive fitted i use a standard 70amp 4 pin relay, you can tell these by pins 30 and 87 are the large type spades, many cars use them for heated screens and such like, i get them of the net for about a fiver, made by durite, never had one fail yet, think its vehicle wiring products, or somthing like that :D

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