My Screwy 31
First off let me say I am not stressing over this. It's just a battery, it is only money, it is meeting my overnight needs, but it is displaying strange behavior, and I am curious as to why. So th...
Forum Discussion
It Still holds the Meanwell at 41 amps for a while when I start it first thing in the morning. 41 amps certainly is not the magical instant absorption voltage current. Constant current still happens nice and flat before the tapering begins. Instant absorption voltage current is in the 70 amp range still.
My 5 day 13.6v experiment was for curiosity. Amps had tapered very low the last 3 says in the 0.3a range. It was for grins, and because the MW allow it, that I bumped it to 14.7v on day 5, which revealed the battery was not fully charged after 5 days at 13.6v. So low and slow, on this battery anyway, is not going to do the job. That was my point.
This battery is getting the Cheapowatt treatment. Pushed until failure for the sake of science. If/when it fails, I still have my AGM battery which can perform both engine start and house duty. But I can also just plug in and not cycle any battery at all and keep them at 13.4 forever, and learn nothing.
I will likely see where I can obtain a trojan 31 for when the time comes, and have a new battery tray fabbed up to replace the one holding the screwy 31. A half inch lower tray would be a good thing too.
BTW, my battery monitor is set to self adjust the charge efficiency factor, and it claims 98%.
Like I believe that. I do have an amp hour counter on the meanwell output, but I usually have loads running when recharging.
My 5 day 13.6v experiment was for curiosity. Amps had tapered very low the last 3 says in the 0.3a range. It was for grins, and because the MW allow it, that I bumped it to 14.7v on day 5, which revealed the battery was not fully charged after 5 days at 13.6v. So low and slow, on this battery anyway, is not going to do the job. That was my point.
This battery is getting the Cheapowatt treatment. Pushed until failure for the sake of science. If/when it fails, I still have my AGM battery which can perform both engine start and house duty. But I can also just plug in and not cycle any battery at all and keep them at 13.4 forever, and learn nothing.
I will likely see where I can obtain a trojan 31 for when the time comes, and have a new battery tray fabbed up to replace the one holding the screwy 31. A half inch lower tray would be a good thing too.
BTW, my battery monitor is set to self adjust the charge efficiency factor, and it claims 98%.
Like I believe that. I do have an amp hour counter on the meanwell output, but I usually have loads running when recharging.
