Salva Posted August 11, 2005 Share Posted August 11, 2005 Hello everybody nice to see a new Landy forum. I was posting this question in LRE and "proctoriv" (hello Ivan!) tall me about Land Rover Addict. So here is my questions (maybe someone have read it already in LRE). I'm in the way to fit a Optima dual battery system (red/yellow) with a IBS Split System, in order to handle the winch, extra lights and a improved sound system and some other things that will come later… 

I have few questions and doubts. 
Wen a bought the car was coming with a Warn M8000 connect to the original battery. I should connect it in the secondary battery, right? some people tell me that and some others I should wired in the main. What is the best? 
Another issue with the battery and winch is I should install a isolator? Why? 

The car also was coming with a Webastoo I should wired in the secondary battery? 

Depends of the total watts I will install in the Audio I will have to think in the alternator, just in case I will like to know few things. 
The alternator in a Defender 110 TD5 (2001) is rated a 120 Amp. Is that right? 
If I need it, can I fit a HO Alternator keeping the 12V, whitout to melt all the cables? What is the max limit Amp? Maybe that is a silly question bud I saw alternators at 375Amp 12v. 

Thanks a lot Salva Quote Link to comment Share on other sites More sharing options...
siggy Posted August 11, 2005 Share Posted August 11, 2005 wire them to the second "yellow" top battery leave the red top to power Starter lights ignition etc Quote Link to comment Share on other sites More sharing options...
mpb Posted August 11, 2005 Share Posted August 11, 2005 As Siggy says wire them into the yellow battery. This means you can flatten your yellow top & still start off your red top. I would personally fit an isolator switch to the winch. I remember reading, in oz people used to drag the winch cable over the roof of the vehicle and attach it to the tow bar. They then shorted out the control box so the cable spoolled in and cut the vehicle in half. Martin 1996 Defender 90 Quote Link to comment Share on other sites More sharing options...
Salva Posted August 11, 2005 Author Share Posted August 11, 2005 I will wired the winch in the secondary battery (yellow) whit a isolator. Thanks guys! ------------ Someone know about the Webasto an the alternator? (read above) Quote Link to comment Share on other sites More sharing options...
simonb Posted August 11, 2005 Share Posted August 11, 2005 My wabasto is wired to the auxillary battery, it only draws about 5 amps but its about 15mins to get the engine up to heat. If you work out amp minutes instead of amp hours drawn, this is more than starting the engine, so the main battery won't like it. I did use a "normal" battery as the aux for a while but they seldom lasted more than a year. A proper "lesiure" type battery has been ok for the last 3 years now. As for alternators 120a will be fine any higher about and you will fry the wiring. You need v thick wire to carry 375a continuously! get some decent batteries and the standard alternator will be fine. Quote Link to comment Share on other sites More sharing options...
Spectric Posted August 24, 2005 Share Posted August 24, 2005 Hi all Why do people buy these Optima's when you can get the Exide Maxima for less and they are the same spiral cell technology but have four post on top and two on the side. They come in a std type or deep cycle and both are about the same price. I paid £110 inc VAT for my last Maxima ! Also if you use hydraulic or PTO winches then the demand on your electrical system is greatly reduced. Looking at deep cycle batterys I have found that the std vehicle alternator does not have the ideal charge curve characteristic's for this purpose. If you look into marine systems then you find that they use large banks of deep cycle batterys but also with a more elaborate control system that replaces the std regulator in your alternator. By the way hello to everyone and especially those like myself who have migrated from a recently closed down forum that was associated with a magazine run by some orifice normally found between a pair of cheeks ! all the best Roy Quote Link to comment Share on other sites More sharing options...
gelf Posted August 28, 2005 Share Posted August 28, 2005 they probably buy optimas cos they are better.......i had had 2 exide maxximas fail in 6 months...... and never found out why, they got sent back but i never heard anything from exide. ive had a blue top optima for years and ive never had to touch it. Quote Link to comment Share on other sites More sharing options...
Spectric Posted September 2, 2005 Share Posted September 2, 2005 Hi Gelf Sorry to hear you had issues but theres no logical reason for that, probabily a case of sod's law. I was told some time back when I was looking into batteries that the cores in the optima's are made by Exide. Could be why the optima looks like it has had a pair of terminals removed on top ! If cost was not a limiting factor then I would have got Hawker Oddessey that use AGM technology. One thing I have not fully got to the bottom of is the charge cycle of these types of batteries which is different from lead acid types and the charge algorithms used in alternators. This could mean some alternators may not be very good when it comes to charging these liquid free or gel type batteries. Modern alternators are now ultilising things like soft charge & smart charging to increase battery life. Quote Link to comment Share on other sites More sharing options...
Salva Posted September 3, 2005 Author Share Posted September 3, 2005 Today I receive my battery isolator !It's huge! I suppose I have to unbolt the phenolic part from the steel plate to mounted in the battery box. I'ts that rigth? And make a hole with a step drill? Someone know the size? I will appreciate some help how to install and wired it? I bought the isolator with the "L" key. Heavy duty battery isolator. (Phenolic moulding with steel fixing plate and removable key. 250Amps @ 24v, 2500A for 5 secs.) Is this one OK or I make a mistake? For more info/pict: www.vehicle-wiring-products.co.uk/VWPweb2000/battisol/battisol.html Thanks! Quote Link to comment Share on other sites More sharing options...
BogMonster Posted September 3, 2005 Share Posted September 3, 2005 Is this one OK or I make a mistake? Sounds OK to me ... the last thing you want is one a bit too small! Quite an interesting "remote controlled" battery isolator for twin battery systems, on that page. Quote Link to comment Share on other sites More sharing options...
Salva Posted September 3, 2005 Author Share Posted September 3, 2005 Sounds OK to me ... the last thing you want is one a bit too small! Is not because is to small my concern are because is 24v. Is 24v. OK? Quote Link to comment Share on other sites More sharing options...
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