Recent content by Seacap

No, the spikes some how are caused by the BMS, maybe not created. But it all stops and runs fine when I remove the BMS. I put the BMS back on and it starts up again after a few cycles. It’s not rocket science. Maybe the alternator and BMS don’t play well together. But removing the BMS solves the...

We have isolated the problem to the BMS. Alternator has nothing to do with it. I programmed the alternator to limit output to 14.2v, float at 13.3v

I haven’t. I’m out in remote anchorages of the Caribbean. No USPS or FedEx out here.

Correct, but I’m not an electrical engineer and it gives me pause when my engine start battery is full. Will that do damage then to the diodes? It’s just freaky to see your charging current spike up to 16.1v. What is happening to the engine start batt? So on and so forth. but I have solved the...

It shuts down the charging and worries me about blowing the diodes.

Ok here is what I‘ve found. The Daly is crap. Or at least mine isn’t working properly. Ok, we have finally isolated our charging problems to the BMS. When I installed the Daly my batteries were balanced (I had been bare backing up to this point for two years)I bought and installed the Daly for...

Another problem I’m seeing. My number 4 cell, my positive terminal keeps getting overcharged. When I first installed the BMS after about a week the #4 was way out of balance. A delta of about .5-.6. My #1 cell was the low cell. So when I started charging the #4 went right up very high. This is...

Just had the same problem with a Daly BMS. Removed it and went bare back. Everything working fine. Except my balanced cells are no longer balanced.

I just uninstalled the BMS and the bang bang stopped.

Thats part of the mystery. My smart controller on the alternator is set for bulk charging at only 14.4v and I monitor everything pretty closely and have never seen initial charging at over 13.7 going in.

Hi all, I’ll try to make this short. Received 4 200a cells on the island of St Martin 1 1/2 years ago. Could not get a BMS to use so I rode bare back until just recently. The cells were all equal all the way up to 13.4v, never charged higher than that as I was being careful without BMS. Never...

Problem solved. Loose bus bar ??

no, the brushes had burned up after 3200hrs. Confirmed by a repair tech. I have an external regulator that has a great charge profile for Lithium. And is recommended by the manufacturers, backed up by an alternator temp sensor that backs off output as temp increases. The regulator bulks at...

At least I think so. I am a newbie at this so bear with me. I installed a Daly 4s 3.2v 100A BMS on my 200A aluminum case cells. Just as I did this my 70A alternator failed due to worn out brushes. This caused a lot of consternation because of the timing ??. I replaced with a large case 120A...

I have a flooded start battery and a LFP house battery. They are connected through a relay when voltage exeeds 13.4v. I am working on the theory that if a get an HVD the start battery will absorb the spike and save the alternator. I have read both pros and cons on this approach. But I also...