Parallel battery

azrving wrote:
We are assuming that you are talking about TWO 12 volt batteries. People call dual purpose batteries and GC2 6 volts deep cycle so we need to know what you have. Since you said parallel our best assumption is 12 volt batteries but you did say DEEP so people could also think 6 volt. Do you have 12 volt or 6 volt batteries?





Solar and inverter dont matter. As Grit said, BUT be sure to connect system positive and negative in a balanced manner. Don't connect the rigs positive and negative to one battery, you want the positive to one battery and you want the negative over to the other side of the other battery.

Your solar is then going to charge both batteries the same way any other charger would be interacting with the batteries.

This pic is from the website "12 volt side of life". IF your batteries are 12 volt batteries they would look like the black ones on the left. They are showing you how to do basic wiring of both 12 volt and 6 volt batteries. If you have TRUE deep cycle 6 volts then you are actually asking about a series connection like the red batteries on the right.

12 volts deep cycle. I have interstate group 24

Z

This is what is balanced and best for twin twelve volt batteries.



As it often doesn't cost a dime more to do this, I think it is worth the trouble.

If you wish to understand the "why" surf here:

correctly interconnecting multiple twelve volt batteries

Others may say it doesn't matter--but unless there is a compelling reason to not optimize charging and discharging why not do it the best possible way?

Matt_Colie wrote:
Any Marine/multipurpose battery is not a real deep cycle battery and will be damaged by even a single deep discharge. That is an unfortunate fact that is a result of being able to provide current for cranking an engine.

If you are going to strap 2 or more 12V batteries in parallel, be sure to keep a box of baking soda on hand to neutralize the acid that will be around after one of the two explodes.

Matt

Why should two 12s explode?

Any Marine/multipurpose battery is not a real deep cycle battery and will be damaged by even a single deep discharge. That is an unfortunate fact that is a result of being able to provide current for cranking an engine.

If you are going to strap 2 or more 12V batteries in parallel, be sure to keep a box of baking soda on hand to neutralize the acid that will be around after one of the two explodes.

Matt

THIS is called a deep cycle and it's 12 volts.

THIS is a deep cycle and it's 6 volts.

THIS is an actual deep cycle 12 volt.

We are assuming that you are talking about TWO 12 volt batteries. People call dual purpose batteries and GC2 6 volts deep cycle so we need to know what you have. Since you said parallel our best assumption is 12 volt batteries but you did say DEEP so people could also think 6 volt. Do you have 12 volt or 6 volt batteries?





Solar and inverter dont matter. As Grit said, BUT be sure to connect system positive and negative in a balanced manner. Don't connect the rigs positive and negative to one battery, you want the positive to one battery and you want the negative over to the other side of the other battery.

Your solar is then going to charge both batteries the same way any other charger would be interacting with the batteries.

This pic is from the website "12 volt side of life". IF your batteries are 12 volt batteries they would look like the black ones on the left. They are showing you how to do basic wiring of both 12 volt and 6 volt batteries. If you have TRUE deep cycle 6 volts then you are actually asking about a series connection like the red batteries on the right.

No difference. Hook +\+ and -/-