DIY split charge

96terrano · 22-07-2013, 19:40

ok so split charge kits are £40 to £65 ish, so just simply googled DIY split charge and this came up, would this diagram work? i've got a 100amp relay and everything else....or will i need a proper kit? thing is, this diagram looks too low amps

thinking of this for the little Hyundai since i'll be using it for holidays

kitchenman · 22-07-2013, 19:50

error

96terrano · 22-07-2013, 19:52

Quote:

Originally Posted by kitchenman

Hi Ryan,
The top diagram is the one I use, works fine, I use a 45 amp relay,

there are two thin wires from the alternator, I think you need the blue one, just put a fuse big enough to protect the wires in series at both battery and load ends

ahh ok, so charging a battery doesn't pull many amps?

kitchenman · 22-07-2013, 19:59

Hi Ryan,

I run the alternator wire to the relay with around a 30 amp fuse both sides, alternator will pump out loads of amps to a flat battery
The thin blue wire on the alternator is the one I use to hold in the relay, on my Mav anyway

My first post was a wrong you saw it before I changed it.

96terrano · 22-07-2013, 20:02

Quote:

Originally Posted by kitchenman

Hi Ryan,

I run the alternator wire to the relay with around a 30 amp fuse both sides, alternator will pump out loads of amps to a flat battery
The thin blue wire on the alternator is the one I use to hold in the relay, on my Mav anyway

cheers, i'll just copy the top diagram then, thing is, im wanting to run a inverter and so on

Deano400 · 22-07-2013, 20:04

I've used something like one of these in the past. Much simpler and better in my opinon.

http://www.ebay.co.uk/itm/HIACE-SELF...item2a2e062217

96terrano · 22-07-2013, 20:08

Quote:

Originally Posted by Deano400

I've used something like one of these in the past. Much simpler and better in my opinon.

http://www.ebay.co.uk/itm/HIACE-SELF...item2a2e062217

Not bad that

Fez_uk · 22-07-2013, 20:08

It's easy enough to work out without a diagram. Just use relay, fuses and cable thats rated appropriately.

96terrano · 22-07-2013, 20:32

Quote:

Originally Posted by Fez_uk

It's easy enough to work out without a diagram. Just use relay, fuses and cable thats rated appropriately.

Yeah, just wanted to double check

kitchenman · 22-07-2013, 21:58

Depends on the output of the inverter remember watts =voltsXamps so if you want to run a power saw at say 500 watts, that's around 2 amps at 240 volts or over 40A at 12V
I am sure solarman will correct me if I got it wrong
dave

kitchenman · 22-07-2013, 21:59

Quote:

Originally Posted by Deano400

I've used something like one of these in the past. Much simpler and better in my opinon.

http://www.ebay.co.uk/itm/HIACE-SELF...item2a2e062217

I would go for one of them if I was starting from scratch
dave

96terrano · 22-07-2013, 22:03

Quote:

Originally Posted by kitchenman

I would go for one of them if I was starting from scratch
dave

they seem easy to wire up

makeitfit · 22-07-2013, 22:11

Quote:

Originally Posted by kitchenman

I would go for one of them if I was starting from scratch
dave

Top news I was just about to spend out £££s on a split charge thingy.
Now I'll buy that for my camper project , cheers guys

solarman216 · 22-07-2013, 22:12

All I can add to the issue is a relay will charge the 2nd battery to full vehicle charge (not full battery capacity) as opposed to a diode which will only charge to a lesser capacity due to the voltage loss involved, Rick

96terrano · 22-07-2013, 22:46

Quote:

Originally Posted by makeitfit

Top news I was just about to spend out £££s on a split charge thingy.
Now I'll buy that for my camper project , cheers guys

Going to buy one fir my Hyundai too

22-07-2013, 19:40	#1
96terrano Senior Member Join Date: Jun 2010 Location: Dumfries and Galloway, Scotland Vehicle: Nissan Terrano 2.7TD LWB Posts: 8,024	DIY split charge ok so split charge kits are £40 to £65 ish, so just simply googled DIY split charge and this came up, would this diagram work? i've got a 100amp relay and everything else....or will i need a proper kit? thing is, this diagram looks too low amps thinking of this for the little Hyundai since i'll be using it for holidays

22-07-2013, 19:50	#2
kitchenman Senior Member Join Date: Jan 2011 Location: Essex Wescliff Vehicle: maverick 1994 2.7 TD Posts: 1,278	error Last edited by kitchenman; 22-07-2013 at 19:55. Reason: error

22-07-2013, 19:59	#4
kitchenman Senior Member Join Date: Jan 2011 Location: Essex Wescliff Vehicle: maverick 1994 2.7 TD Posts: 1,278	Hi Ryan, I run the alternator wire to the relay with around a 30 amp fuse both sides, alternator will pump out loads of amps to a flat battery The thin blue wire on the alternator is the one I use to hold in the relay, on my Mav anyway My first post was a wrong you saw it before I changed it. Last edited by kitchenman; 22-07-2013 at 20:01. Reason: update

22-07-2013, 22:12	#14
solarman216 Off road maniac Join Date: Dec 2009 Location: Bexhill on Sea Vehicle: Y60 Patrol Me, 3 ltr Mrs Posts: 17,430	All I can add to the issue is a relay will charge the 2nd battery to full vehicle charge (not full battery capacity) as opposed to a diode which will only charge to a lesser capacity due to the voltage loss involved, Rick __________________ Ex banger racer now off road maniac Lokka on the front with manual hubs Diff lock on rear 3 inch SS straight through exhaust Manly winch bumper with 13000 lb winch 10 spike ground anchor, with multiple straps and blocks Super strong body cills capped with scaffold pole 20% stronger springs all round aggressive off road tyres on wheels so just swap. Aim to get stuck and be completely self sufficient in extraction, love getting muddy, 2ft deep is good but rare.

22-07-2013, 20:04	#6
Deano400 Senior Member Join Date: Dec 2012 Location: North West Vehicle: Patrol Y60 Posts: 217	I've used something like one of these in the past. Much simpler and better in my opinon. http://www.ebay.co.uk/itm/HIACE-SELF...item2a2e062217

22-07-2013, 20:08	#8
Fez_uk Senior Member Join Date: Sep 2010 Location: Mid-Wales Vehicle: Maverick 2.7 - Patrol 4.2 Posts: 5,645	It's easy enough to work out without a diagram. Just use relay, fuses and cable thats rated appropriately.

22-07-2013, 21:58	#10
kitchenman Senior Member Join Date: Jan 2011 Location: Essex Wescliff Vehicle: maverick 1994 2.7 TD Posts: 1,278	Depends on the output of the inverter remember watts =voltsXamps so if you want to run a power saw at say 500 watts, that's around 2 amps at 240 volts or over 40A at 12V I am sure solarman will correct me if I got it wrong dave