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Daly BMS issue

TCgreg

Solar Enthusiast
Joined
Sep 21, 2019
Messages
116
New 200amp 4s smart BMS. Worked fine for about a month but now cell 1 is showing incorrect cell voltage. Confirmed with a meter all 4 cells are within .002v Daly reports cell one at .134v lower which is a substantial error.

Things I have tried:
Completely disconnect BMS and reinstall per instructions twice.
Checked terminal ring connection and checked voltage at end of leads where they plug in. Voltage correct.
Tried resetting using reset button on BT dongle.
Contacted Daly via e-mail. no response so far.

Again everything worked fine for a month so it's not an error in assembly or mixed up leads.

After looking through this forum and others I see a lot of people posting about issues with DALY. I should have done better research.

Considering just ordering a JK but though I would see if anyone here has had this issue and could advise or recommend a different BMS.
 

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New 200amp 4s smart BMS. Worked fine for about a month but now cell 1 is showing incorrect cell voltage. Confirmed with a meter all 4 cells are within .002v Daly reports cell one at .134v lower which is a substantial error.

Things I have tried:
Completely disconnect BMS and reinstall per instructions twice.
Checked terminal ring connection and checked voltage at end of leads where they plug in. Voltage correct.
Tried resetting using reset button on BT dongle.
Contacted Daly via e-mail. no response so far.

Again everything worked fine for a month so it's not an error in assembly or mixed up leads.

After looking through this forum and others I see a lot of people posting about issues with DALY. I should have done better research.

Considering just ordering a JK but though I would see if anyone here has had this issue and could advise or recommend a different BMS.
This situation you need use a multimeter check the resistance value between BMS B0 pin to P-(BMS cables),if show exceed 10,i think have some problem about AFE chip
 
Another way is to loosen the connection with P- and check whether the voltage drop of cell 1 disappears.
 
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