Hybrid_From_Hell Posted August 3, 2007 Share Posted August 3, 2007 Hello Electrical Gurus. Ok.............I have at the moment 2x 'Red Top Optimas'. These are really a "left Over" from my days with electric winches, but even now I do like the idea of having a second battery as a back up etc. At the moment I have a National Luna Split Charge system on it - and its coming off for all sorts of reasons. So............. I want to keep both batteries, and am just having a ponder as the best way to wire them up after I take the split charger out ?........... My thoughts are : Battery 1 - basically keeping as it is : HUGE 50mm earth to chassis from Neg Terminal. Large cable* from the starter to a Master Cut out Switch From this a large cable* then goes to the positive Post (*Large cable is 35mm welding cable) So Best way to go with Battery 2 ????................... Use the post on the main cut out add another cable and then go across to Battery 2 Postive terminal ? Add a Cable from Postive terminal Bat 1 to a second Cut out No 2 and then to Battery 2 Postive terminal ? Or just a big cable from Battery 1 Positive to to Battery 2 positive and have both battery 1 through master cut out ?? (Battery 2 does have is own sepearte HUGE Earth) Alternator is 90amp So really what or which is better / and why ? Best option of battery 2 ...........and the pros and cons please ? What would you do ? / Or have done ? and why ? Nige Quote Link to comment Share on other sites More sharing options...
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