Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 21,840
Amazing!
They actually market it as "PWM"?
Usually we see that exact model sold under "MPPT" brand.
Cheap PWM charge controller. If you don't care about harvesting maximum power, it could work.
If it fails (not too badly, not excessive voltage), your BMS will protect the batteries.
There is a thread about what happens when SCC fails with FETs shorted so PV voltage is applied to BMS. More of a problem with high voltage string of MPPT.
I would say use this SCC only if maximum PV Voc on a cold day is within the voltage BMS can hold off in the event it disconnects.
Better to buy a higher quality PWM. Midnight carries the "BRAT", for instance.
Or a quality MPPT.
Look for one you can program to desired charge current. Then you can over-panel, limit current to what LiFePO4 can accept at whatever temperature BMS is set at for low-temperature disconnect. Repurpose the SCC or another application in the future.
They actually market it as "PWM"?
Usually we see that exact model sold under "MPPT" brand.
Cheap PWM charge controller. If you don't care about harvesting maximum power, it could work.
If it fails (not too badly, not excessive voltage), your BMS will protect the batteries.
There is a thread about what happens when SCC fails with FETs shorted so PV voltage is applied to BMS. More of a problem with high voltage string of MPPT.
I would say use this SCC only if maximum PV Voc on a cold day is within the voltage BMS can hold off in the event it disconnects.
Better to buy a higher quality PWM. Midnight carries the "BRAT", for instance.
Or a quality MPPT.
Look for one you can program to desired charge current. Then you can over-panel, limit current to what LiFePO4 can accept at whatever temperature BMS is set at for low-temperature disconnect. Repurpose the SCC or another application in the future.