Hi I have added a extra Pylontech 3000c to my existing 2 x Pylontech 2000 batteries[ inverter is LUXPOWER LXP3600ACS] Batteries do not seem to be balancing, and my read out on the app [on my phone] show the battery now red coloured and no increase in battery  charge levels. Can any one confirm how long batteries will take to balance , and what red colour out means on battery image the phone app

I would change your topic heading.

Also give details of the app your using.