Hi,
I have an 18kPV inverter/controller, a mixed array of panels (PV and micro-inverter) and 3 of the EG4 14.3kWh AW batteries. The system is grid-tied and usually runs in back-up mode. The inverter has been in operation for about 10 months and the batteries about 8 months. There are no operational problems at this point, but I do want to make sure I am taking proper care of the system.
Earlier this year (in the spring) while sorting out difficulties with wifi, the support tech I was working with recommended re-balancing (or maybe he said "re-calibrating") the batteries. He said that in a multi-battery system, this is something that should be done periodically. He did all of the settings, and I didn't quite grasp the process. I do recall that it involved setting the system to lead-acid, draining the batteries down a bit and then charging them back up. I had to call back in to him to get the system back to proper back-up mode.
It's been a few months and I called back in to support to say "Hey, I think it might be time to do this again." and the tech I was connected to didn't seem to understand my request. I couldn't get the tech to describe or agree to a re-balancing or re-calibration process. They switched the system to self-consumption to exercise the batteries, but re-balancing (going to lead-acid mode, etc) was simply not something they seemed to be able to talk about.
Can the folks on the forum--especially any EG4 staff that may be watching--answer a couple of questions for me?
1. Is periodic re-balancing/re-calibration necessary or recommended for my system/configuration?
2. If so, how often should it be done, and what is the step by step procedure for my system?
Thanks!
