Is victron's USB-VE.Direct the correct cable to connect Cerbo GX to JK BMS? I'm still trying to make it work, but it always fails with
WARNING:SerialBattery:Testing Jkbms
ERROR:SerialBattery:>>> ERROR: No reply - returning
BMS is JK-B2A24S20P, HW ver 8.X SW ver 8.20G
I'm connecting GND, TX...
Hi, I bought JK-B2A24S20P from hankzor in january for battery expansion, but did not immediately test it. It's the version with display and heater ports. I've connected it last week for the first time and it had an issue - temperature reading on T2 was erratic. jumping -5 .. 16°C and sometimes...
There is no issue. He was corrected in the comments. Those are silicone wires. I can't find values for 7ga wire, but single 8ga can take 100Amps, so two 7ga wires should be enough for 200Amps. The only issue here is that their working temperature could be a bit higher, so if you screw that to a...
I was afraid to connect it as it is 55 V and I was not able to find maximum allowed voltage for VE.Direct Power+ pin. So, 55 V is still safe? It's a bit higher than what I've seen previously on data ports and I don't want to damage anything.
So I wonder how ppl connect JK BMS to Cerbo or RPi. As JK BMS's port has TTL UART logic with 4 pins - GND, TX, RX, but the fourth power pin is actually Vbat, not +5V. It doesn't feel safe to use non-isolated cable (for case BMS turns off discharge).
With the newer JK BMS version that has port...
Did anyone try to use latest version of JK BMS? I just got one in the mail today and it looks different. Previous version had "CAN" port and "GPS/RS485" port. This one has "CAN/RS485", "GPS" and two extra ports with chineese labels only. One of those will be for the LCD I guess. Anyway, does it...
Does anyone know what is exact type of connector used for RS-485? I already had RS-485 USB converter cable, so I did not order the original RS-485 cable, but I'm missing the BMS side connector and nothing I have does match