Hi guys, I need your opinion please
I am testing a 12V230Ah battery with a JK-BMS (B2A8S20P).
I discharge with a total current of 169A (125A through a victron Phoenix inverter + 45A through a DCDC to another battery)
The MOSFET temperature reaches 86.3°C (187.34°F) I find it high, knowing that in the JK-BMS data sheet it is indicated "Operating temperature range: -20 ℃ ~ 70 ℃ (-4°F ~158°F )
I use 2x7AWG wire and I tightened the connection screws to 4 N.M
What do you think ?
Thanks
![MOStemp.jpg MOStemp.jpg](https://diysolarforum.com/data/attachments/137/137284-f505c71e1780ee776f86c446fbf0f699.jpg)
![Screw temp.jpg Screw temp.jpg](https://diysolarforum.com/data/attachments/137/137285-fe39d725a14a0a85bd1b449649f540fa.jpg)
![4Nm.jpg 4Nm.jpg](https://diysolarforum.com/data/attachments/137/137287-445766a32b35a5d298ecf2b5a5010621.jpg)
![Capture d’écran 2023-02-28 200330.jpg Capture d’écran 2023-02-28 200330.jpg](https://diysolarforum.com/data/attachments/137/137288-3616d3aa1214411f4e2c215e7c003dbe.jpg)
I am testing a 12V230Ah battery with a JK-BMS (B2A8S20P).
I discharge with a total current of 169A (125A through a victron Phoenix inverter + 45A through a DCDC to another battery)
The MOSFET temperature reaches 86.3°C (187.34°F) I find it high, knowing that in the JK-BMS data sheet it is indicated "Operating temperature range: -20 ℃ ~ 70 ℃ (-4°F ~158°F )
I use 2x7AWG wire and I tightened the connection screws to 4 N.M
What do you think ?
Thanks
![MOStemp.jpg MOStemp.jpg](https://diysolarforum.com/data/attachments/137/137284-f505c71e1780ee776f86c446fbf0f699.jpg)
![Screw temp.jpg Screw temp.jpg](https://diysolarforum.com/data/attachments/137/137285-fe39d725a14a0a85bd1b449649f540fa.jpg)
![4Nm.jpg 4Nm.jpg](https://diysolarforum.com/data/attachments/137/137287-445766a32b35a5d298ecf2b5a5010621.jpg)
![Capture d’écran 2023-02-28 200330.jpg Capture d’écran 2023-02-28 200330.jpg](https://diysolarforum.com/data/attachments/137/137288-3616d3aa1214411f4e2c215e7c003dbe.jpg)