I purchased a Growatt SPF 3000TL LVM invert 6 months ago and ran it on solar and grid only with no problems at all. Really like the Growatt product. I just recently installed two EG4LL 48v batteries to the system and now I'm have flickering LED light problems. It's driving me crazy. There are no refrigerators on the system and the Growatt is not in power saving mode. I don't understand why the batteries are affecting the system this way when the solar panels on their own didn't cause any problems. I've researched this problem to no end. Contacted the supplier which didn't help. I was wondering if anyone else with this model are having the same problems? Is there a fix for it? Any recommendations on a different inverter? Thanks for any help