I really appreciate Will making a separate section for marine applications, and thought I would post my question here since I have learned so much but so much more to learn, lol. I have an interesting set up, I believe it can benefit more boat users that are using multiple batteries for trolling motor. I live in a lake community and have a lift on one of the lakes but they do not have shore power available so I have always had to use additional electronics to allow for batteries to charge not only starting battery but also trolling batteries (for me its a 24v, 2 battery setup). There are several vendors that make such devices and they make them to work with lithium batteries, at a high level when charging they place the batteries in parallel and when the starting battery hits 13.2v then it opens up and allows the trolling bank to be charged from the alternator. I used one of these setups for 10 years but ended up getting a new boat and wanted to go with Lithium for the trolling batteries and got one of the newer versions for lithium batteries. Why I thought I would bring this up is one of the nice things about the units is that by placing the batteries in parallel to charge it allows them to equalize across the batteries vs when they are in series.
My question is I purchased to powerurus 100ah batteries with bluetooth and they appear to charged up fine, both my onboard battery charger and home is noco genius which has a lithium setting. One thing that I have noticed when charging from the blue tooth screen is when its close to max charge it displays a cell overvoltage message. I also notice that the charge mos light goes to off, so it appears that the BMS cut the charging off, but that is just me guessing. The other thing I have noticed is internally the voltage difference is .065v, I think the other battery is .05v. One thing I noticed once the charging stops the cells appear to balance more and it goes down to .001v. I've attached a screenshot of one of the batteries when almost fully charged, but thought maybe I could get some insight into how things are working and what the app is telling me.
Thanks
My question is I purchased to powerurus 100ah batteries with bluetooth and they appear to charged up fine, both my onboard battery charger and home is noco genius which has a lithium setting. One thing that I have noticed when charging from the blue tooth screen is when its close to max charge it displays a cell overvoltage message. I also notice that the charge mos light goes to off, so it appears that the BMS cut the charging off, but that is just me guessing. The other thing I have noticed is internally the voltage difference is .065v, I think the other battery is .05v. One thing I noticed once the charging stops the cells appear to balance more and it goes down to .001v. I've attached a screenshot of one of the batteries when almost fully charged, but thought maybe I could get some insight into how things are working and what the app is telling me.
Thanks