electric question - Page 2

extreme-4x4 · 11-06-2009, 23:12

Quote:

Originally Posted by lacroupade

heyyyyy, that'll be me then

no paul yours is not a proper bmw..... yours is a mid life crisis cry for help

i can picture what the wife said, when you took that home

lacroupade · 11-06-2009, 23:15

Quote:

Originally Posted by extreme-4x4

no paul yours is not a proper bmw..... yours is a mid life crisis cry for help

i can picture what the wife said, when you took that home

she said "darling with a penis like yours Big Boy, who needs an extension..". so i built a shed instead.

extreme-4x4 · 11-06-2009, 23:16

Quote:

Originally Posted by ocelot

you can get some cracking switches for boats to switch between battery banks, two or three way.
the split charge unit is simply a large diode on a heatsink, you can make one for about £25 if you get a 100A diode from RS components or Farnell........

you got a link for them....

im crap with electric so be patient with me ay

extreme-4x4 · 11-06-2009, 23:17

Quote:

Originally Posted by lacroupade

she said "darling with a penis like yours Big Boy, who needs an extension..". so i built a shed instead.

im sure she did.... we both know better than that pauly

bet she had your guts for garters

lacroupade · 11-06-2009, 23:19

Quote:

Originally Posted by extreme-4x4

im sure she did.... we both know better than that pauly

bet she had your guts for garters

i'm the boss in my house

extreme-4x4 · 11-06-2009, 23:22

yeah......... thats why you need one of these

lacroupade · 11-06-2009, 23:25

Quote:

Originally Posted by extreme-4x4

yeah......... thats why you need one of these

ahh the lerrrrv machine!

Terranosaurus · 11-06-2009, 23:56

Quote:

Originally Posted by makeitfit

So where do you get a 150 amp alternator from please?

Ebay where else.

Quote:

Originally Posted by ocelot

you can get some cracking switches for boats to switch between battery banks, two or three way.
the split charge unit is simply a large diode on a heatsink, you can make one for about £25 if you get a 100A diode from RS components or Farnell........

I know they do it that way on boats but it means you need to have your alternator regulator reset to account for the voltage drop across the diode otherwise you don't get a full charge in your battery. It also means you have to use a separate isolator to reconnect the batteries if you ever need to jump start yourself off your secondary battery. Least thats the way my oldman does it on his Broom.

Usual practice with 4x4s is to use a voltage sensing relay. This will trigger only at say 13.6volts when a decent charge is already in the primary battery and then it will charge the secondary too. Some have the facility to manually (but still electrically) over ride them so you can either disconnect or connect them as needed.

extreme-4x4 · 11-06-2009, 23:59

Quote:

Originally Posted by Terranosaurus

Ebay where else.

I know they do it that way on boats but it means you need to have your alternator regulator reset to account for the voltage drop across the diode otherwise you don't get a full charge in your battery. It also means you have to use a separate isolator to reconnect the batteries if you ever need to jump start yourself off your secondary battery. Least thats the way my oldman does it on his Broom.

Usual practice with 4x4s is to use a voltage sensing relay. This will trigger only at say 13.6volts when a decent charge is already in the primary battery and then it will charge the secondary too. Some have the facility to manually (but still electrically) over ride them so you can either disconnect or connect them as needed.

how about a link then terra say an ebay item so i know its what i need and get it ordered

Terranosaurus · 12-06-2009, 00:05

I got one off a vw sharan VR6 - doesn't bolt straight on by a long chalk thought. I just did a search for something like this and waited for one to come up at the right price.

It helps that mine has the separate vacume pump, some T2's have them built into the alternator in which case you need one of a diesel thats the same.

Thry this search

Quote:

alternator (100,110,120,130,140,150) amp

extreme-4x4 · 12-06-2009, 00:10

how about the split charger voltage sensing relay

am i looking for anything in particular

Terranosaurus · 12-06-2009, 00:15

Can't find one on ebay at the moment (I have a pre production model on trial on mine).

One of THESE would actually do the job - just connect the trigger circuit to the charge light circuit on the back of the alternator, it means it will charge both batteries all the time the engine is running but for most things thats fine. You can then put a switch in that circuit to allow you to over ride it etc when you want to.

extreme-4x4 · 12-06-2009, 00:34

thanks guys will look into it more, now i have some usefull info to work with

11-06-2009, 23:22	#21
extreme-4x4 Senior Member Join Date: Sep 2008 Location: WALES Posts: 6,295	yeah......... thats why you need one of these

12-06-2009, 00:10	#26
extreme-4x4 Senior Member Join Date: Sep 2008 Location: WALES Posts: 6,295	how about the split charger voltage sensing relay am i looking for anything in particular

12-06-2009, 00:15	#27
Terranosaurus Senior Member Join Date: Aug 2006 Location: YORKSHIRE Vehicle: 2001 2.7 TDi T2 SWB Posts: 4,077	Can't find one on ebay at the moment (I have a pre production model on trial on mine). One of THESE would actually do the job - just connect the trigger circuit to the charge light circuit on the back of the alternator, it means it will charge both batteries all the time the engine is running but for most things thats fine. You can then put a switch in that circuit to allow you to over ride it etc when you want to.

12-06-2009, 00:34	#28
extreme-4x4 Senior Member Join Date: Sep 2008 Location: WALES Posts: 6,295	thanks guys will look into it more, now i have some usefull info to work with