u/Golstrider

My DIY battery with a Jikong BMS and 15S EVE 105Ah cells (≈5 kWh total) is connected to an EcoFlow Delta Pro (older edition) using a modified original flat cable.

Pins 4 and 6, along with a 1 kΩ resistor, work on Battery Port 2 — no adapter is required.

850$ in total for battery + 70$ for cable