go4it ..
Thanks for the explanation.
1- If I install my 4 battery in parallel, I keep 24 volts and 28 Ah (my battery has 14 ah each). The 28 ah is it ok for my controller ?
2- How to install my 2 battery in parallel, and let each in their place.
Can you give me a quick shema ?
Excuse my lack of knowledge of electricity. Thank.
PS ..
My two battery should they be equal in power (wear) so that your system works well.
If either battery is lower than the other, is there a problem ?


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A little drawing

of my setup, and I placed my second wire-spare, a top, for the parallel installation (if needed)
Thank you for your help.
