correct battery use.

[jurgenscraft]

I would like to use my two batteries as follows:<br />battery number one. starter, lights and non navagational equipment including vhf radios. This battery will be charged by the motor charging system while in use.The other battery will be used for navagational equipment and electronics but will be charged only by a mains powered smart charger,( under normal conditions).Both batteries will have meters to show their state of charge, both batteries will be fitted with cut out switches of the heavy duty variety, is this the way to go or am I being too particular, my thinking is that I would not like to dammage the electronic equipment by having it connected to a system that might go into a state of over voltage or even a high voltage spikes because of non regulation of output voltage,I would rather be safe than sorry. looking forward to your replies.<br />Thanking you all in anticipation,Kind regards William Wright.

 

[DangerDan]

Re: correct battery use.

Are you planning to use a Switch? I run my system much the same except I installed a distribution cluster. http://www.bepmarine.com/showproduct.cfm?productid=501 <br />I isolated my starter Batt. to one circuit and everthing else runs off of mt two house batts. With this switch I feel pretty comfortable knowing that I will never be left out on the lake.

 

[amirm]

Re: correct battery use.

Properly designed marine equipemnt should handle typical fault conditions well (so called "load dump"). So unless you remove the battery and run the systems from the alternator alone, you should not have any worry.<br /><br />Your set is very different than typical. Most people,including myself, would use one "house battery" for everything other than starter. That way, you can get a deep cycle battery designed for that use.<br /><br />Amir

 

[Ralph 123]

Re: correct battery use.

You'd be a lot better off using the typical approach amir mentioned. The first time you forget to charge the second battery and/or are not near shore power long enough to recharge you second battery and lose you electronics while underway, you'll wish you had used a more typical approach.<br /><br />You can easily isolate your two batteries using a combiner or isolator. As amir said, you can then use a deep cycle "house" battery to run all you accessories and have a dedicated marine starting battery to start your engine. When the engine is running, the 2 batteries will be combined automatically to allow both batteries to charge. When there is no charge sorce present the batteries will be isolated so that you starting battery will not be discharged accidentially. In addition, a simple on/off swicth can be added which will allow you to manually combine the two batteries in an emergency starting situation.<br /><br />here is a good article that describes in more detial what I'm talking about:<br /><br /> http://www.westmarine.com/webapp/wc...ogId=10001&advisor=creatingabatterysystem.htm <br /><br />You can see a good schematic and description here:<br /> http://www.yandina.com/acrobats/C150Data.pdf <br /><br />BEP also makes one:<br /> http://www.bepmarine.com/showproduct.cfm?productid=12