Recent content by JimHanus

I have a shunt. If I’m not mistaken, the shunt will not allow me to change or monitor parameters. If you know otherwise please let me know.

UPDATE: the latest battery (number three) appeared to be working OK for a while. Both are now doing the same thing as the other 2 did. They are fully charged at 100%. I’ll be using them for a little bit and they may drop down to 98 or 99%. Suddenly, they’ll show some odd numbers such as 6%. It’s...

Got my new replacement Vatrer 12V 200AH battery yesterday (1 week to arrive). Seems to be working fine. Charging and discharging numbers are in line with recommended criteria. Has a 7 year warranty so I'm hoping it will last that long. Who knows what battery types may be available in 7 years!

Well it appears Vatrer is going to replace the bad battery. Some things of note: The converter I was using is specified as 55A. The bad battery would only draw or charge at 24A. My other good battery draws up to 54A and a much shorter charge time. The posts on the bad battery would get up to...

I have several BMS apps and they all show the same numbers. The latest that Vatrer wants me to do is start at 100%, run it down to zero and charge it up again. I did as instructed. It discharged to 68% and stopped there, then it jumped to zero with no current flowing. I've been trying to now...

I don't have access to the individual cells, other than what shows in the BMS. Looking at those numbers they are all very close, .007V. I've been in contact with Vatrer every day (it's getting ridiculous). 27 emails and counting. Try this, try that, run it down to zero, charge it fast, slow...

My point is that I can be using it for 1/2 hour with a light load and suddenly it drops to 6%, sometimes 0%. Different BMS apps give the same numbers. So how much is left really? I'll see what Vatrer has to say on Monday.

End of February 2024 I purchased two 12V 200Ah heated batteries #LM12200 off Amazon, mfg. at the end of November, close to $1300. Haven't used them yet but in testing am having a problem with one of them. It will discharge down to anywhere between 90 and 70% then jump to zero SOC. I've been in...