โApr-03-2020 06:10 PM
โApr-11-2020 02:52 PM
BFL13 wrote:
...
LY has seen with AGMs (me too) that after they get down to "end current" at 0.5a/100AH and you leave them at 14.x volts they will keep warming up and that takes more amps, so amps start going back up. Time to lower the voltage!
...
โApr-08-2020 11:05 PM
โApr-04-2020 07:37 PM
wopachop wrote:Vintage465 wrote:I learned something from this forum that might relate to your setup. The flooded 6v like a big strong charge current. Which you probably wont get from your solar.
This is way over my head. My solar charges my four 6v using 14.8 volts and when I see the Panel voltage gauge jumps to 20v on the gauge and my battery voltage is over 13.5v..........it's done.
I had batteries die premature. Only 2 years old. They were on solar 24/7 and rarely cycled. I figured they died from living on float charge during the day.
The smart guys on here told me they most likely died from being undercharged. My solar setup was not giving the strong charge current the flooded batteries wanted.
It might benefit you to turn on a bunch of lights at night. Cycle the battery down. Then if you run your generator once a month maybe the trailer charger is giving a somewhat stronger charge than the solar.
โApr-04-2020 07:34 PM
BFL13 wrote:
ISTR old batteries will have more heat loss when charging and when you get down to the end for tapering amps, the lowest the amps get to will be higher, where more of those amps are going to heat instead of charging.
So your "end current" or whatever you call it, will be higher than with new batteries.
LY has seen with AGMs (me too) that after they get down to "end current" at 0.5a/100AH and you leave them at 14.x volts they will keep warming up and that takes more amps, so amps start going back up. Time to lower the voltage!
I am guessing these 8v batts are for a golf car. You can use four T-1275 12v or six 8v to get your 48v.
What is the make/model of your charger if it is not one of those kind that comes with a golf car? It has settings of interest not found in many chargers.
โApr-04-2020 12:07 PM
โApr-04-2020 11:40 AM
wopachop wrote:Call it done at that point. I believe part of the issue is mixing the age of batteries.
Im referencing the Trojan guide for charging flooded batteries. They are a mix of old 8v Trojans and newer 8v Generic Brand. I have the charger set for 2.45v per cell. (i didnt temp compensate, weather app says its 65F right now)
Trojan says to do a maximum of 4 hours absorption. At that time im still not dropping to the 1-3% finish charge range.
โApr-04-2020 11:32 AM
โApr-04-2020 11:15 AM
โApr-04-2020 11:07 AM
Vintage465 wrote:I learned something from this forum that might relate to your setup. The flooded 6v like a big strong charge current. Which you probably wont get from your solar.
This is way over my head. My solar charges my four 6v using 14.8 volts and when I see the Panel voltage gauge jumps to 20v on the gauge and my battery voltage is over 13.5v..........it's done.
โApr-04-2020 10:28 AM
landyacht318 wrote:Im confused by amps tapering, and then rising. I dont think im following exactly what you mean.
When Amps stop tapering at absorption voltage, and start rising, call em done, is another method.
Or are you afraid of wearing out the spring on your DC Clampmeter's clamp?
โApr-04-2020 10:19 AM
โApr-04-2020 08:11 AM
โApr-04-2020 07:06 AM
โApr-04-2020 06:46 AM
โApr-04-2020 06:11 AM