Can I connect my 12v battery to the solar panel Connectors to get more power when I need it?

[Robert0416]

I have a 12v 200ah lithium battery power station that I built and would like the option to connect another 12v 200ah battery when I need it. I don't have a DC in port but was wondering if I could connect through my solar panel Connectors to give me the extra battery when I need it. Of course I won't have the solar panel connected then.

 

[wpns]

Depends on your power station, do you have any more details on it?

 

[Rednecktek]

No, the charge controller you're plugging into needs higher voltage than the battery to actually transfer power into your system. If you put a 12v battery on there the charge controller would do nothing with it thinking it's just another panel really early in the morning and wait for the voltage to come up.

What you can do is wire up a couple pigtails with Anderson connections on each battery, then you would just plug the external battery into parallel with the existing battery.

 

[Robert0416]

Thank you! That's what I'll do then. Very happy!!