Adding batteries

[ChillnGrill]

A little help guys. I'm running the 18kpv with 6 x eg4 life power 4 batteries and want to add the new eg4 power wall. I'm not confident on the way I should wire it together. Question is should I just parallel it to the second battery input without coms. Coms is being used on my life power 4 rack now. Is this a safe method or not?
I know Will has done it with his setup, but it has me scratching my head a little. Would it make more since to just add 3 more life power 4 batteries?

 

[timselectric]

should I just parallel it to the second battery input without coms. Coms is being used on my life power 4 rack now. Is this a safe method or not?

This will work fine. If you don't care about comms for all.

Would it make more since to just add 3 more life power 4 batteries?

This will allow coms for all.

It's just a personal preference. Either is fine.

 

[ChillnGrill]

This will work fine. If you don't care about comms for all.

This will allow coms for all.

It's just a personal preference. Either is fine.

The larger capacity powerwall won't be a problem? That's what I'm worried about. Mixing different ah.

 

[timselectric]

No issue at all.

 

[ChillnGrill]

Thanks Tim