3month old Extreme team 100ah,48v bms failure?

[mnealuf]

It was chilly night for us in Florida, probably around 50F though. So I wouldn’t think it is the cold weather ailment .

Originally Posted by Beerdude77

Any idea what the temperature was when that happened?

[mnealuf]

I agree, the fault reporting of this Daly BMS is fairly poor. I equate it to a check engine light in a car that goes away once you turn car off. 🙂

Originally Posted by Pat911

I don't understand how it can be tripping without any faults showing. I wonder if the BMS has custom firmware in it that is faulty.

[Beerdude77]

Originally Posted by mnealuf

I agree, the fault reporting of this Daly BMS is fairly poor. I equate it to a check engine light in a car that goes away once you turn car off. 🙂

Agreed, it seem like this BMS is a POS.....

[WalterM6]

Agreed, it seem like this BMS is a POS.....

It's prettier than the rest of them but it is still a POS.

[Pat911]

I no longer use or recommend Daly BMS’s. Having said that, the couple I did try definitely reported fault conditions correctly, hence my comment about faulty custom firmware in there.

It’s not really a POS, it does its job correctly, can handle massive currents but my two problems with it are its cell balancing limitations and its inaccurate coulomb counting, otherwise I don’t mind them.

[mnealuf]

Pat, Is there a way to reset the bms via the app when it is tripped? That would be better than pushing cart home and plugging it in when (if) it happens again. I am bummed because I am scared to use the cart Incase it flips out and trips for no reason again.

Originally Posted by Pat911

I no longer use or recommend Daly BMS’s. Having said that, the couple I did try definitely reported fault conditions correctly, hence my comment about faulty custom firmware in there.

It’s not really a POS, it does its job correctly, can handle massive currents but my two problems with it are its cell balancing limitations and its inaccurate coulomb counting, otherwise I don’t mind them.

[Pat911]

Daly BMS’s normally reset themselves when the fault condition is removed. There’s normally no need to plug into a charger.

Having said that, the normal way of waking up a BMS that doesn’t start itself up is to apply a slightly larger voltage to the BMS charge port than is on the battery. That’s what plugging a charger in does.

I haven’t tried this but next time it trips you might try connecting a 1.5v battery across the B- and C- ports on the BMS. Any small battery will do (AA, C, D etc.). Place the positive on B- and the negative on C-. That should wake it up. If it doesn’t work then you may need more than 1.5v so try 2 batteries in series to give 3v.

Let me know how you go please.

[WalterM6]

Have you tried increasing the sleep time like I suggested in post#4 of this thread?

[Beerdude77]

Originally Posted by WalterM6

Have you tried increasing the sleep time like I suggested in post#4 of this thread?

When I did that for mine it immediately shut the battery down when I made the change to the sleep time

[jonr3]

Originally Posted by Beerdude77

When I did that for mine it immediately shut the battery down when I made the change to the sleep time

I tried it to mine and it seemed to take it. I replaced my DALY BMS with a new DALY BMS that Extreme sent me and everything seems to be working well now.