Adding extra AGM batteries to existing bank

[OpavskeLazy]

I'm using 6v 265Ah AGM batteries to make a 24v bank, 4 batteries connected in series and each group then joined in parallel. I figured I have just enough room to add another 4 batteries. I've only just made the battery bank 2 weeks ago and I know exactly how many amp hours I've already drawn - 107Ah in total. Do I need to use the 4 new batteries I want to connect so they've done roughly the same amount of work or will I be ok to just add them to the others as they are? All brand new batteries by the way. Many thanks

 

[Rednecktek]

Make sure all the batteries are topped off so they're the same SoC and you should be good to go bolting them in.

 

[OpavskeLazy]

Excellent thanks