I'm based in the UK and about to pull the trigger on a Sunsynk (Deye) 8kW and think I will go for the for the Seplos kit and getting the batteries from Amy at Luyuan. I will occasionally discharge the 280ah batteries at 160ah, to get to the full 8kW. Do Seplos ask you to specify which BMS is included in the kit? I want a 200ah that can talk to Sunsynk / Deye. How useful do you find the communication? My other option is to buy a cheaper Luyuan complete kit with a 200ah JK BMS, which can't communicate, but can balance 280ah cells and has Bluetooth. The JK BMS is $100 cheaper.
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Henry of Seplos sent me this video of their new improved packaging:
Are you happy with your Deye inverter? Is it's self consumption high? Some have reported 200wh. Did you set up signal island mode using a relay to create an earth neutral bond?