โFeb-13-2021 02:29 PM
โFeb-17-2021 01:21 PM
PanhandlePlainsman wrote:
I'm still reading all of your posts. All are appreciated. Too cold here this week to do any work on it. Many thanks!
I will need to price some of these upgrades out to see what works best for me. I do plan to get some brand of 2000-2500 watt generator. I would plan to run it 2-3 hours per day as needed when boondocking occasionally. Looking for best battery and converter choices for the money.
โFeb-17-2021 08:03 AM
โFeb-17-2021 07:20 AM
โFeb-17-2021 07:03 AM
โFeb-16-2021 07:06 PM
โFeb-16-2021 04:25 PM
โFeb-16-2021 04:19 PM
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โFeb-16-2021 01:15 PM
CA Traveler wrote:
Here you go!
โFeb-16-2021 01:11 PM
pianotuna wrote:PanhandlePlainsman wrote:
I need more explanation on the application of the temperature chart.
Battery charging "charts" are set up for 25C (77f) and most charts list the charging voltage at 13.5. Gassing voltage is 14.34 volts.
The speed of chemical reactions approximately doubles for each 10 degree C (18 f) that the temperature increases.
As the temperature gets higher, the charging voltage should be lower to prevent extra erosion on the positive plates. At 50 C (122 f) charging voltage is just 13.2 and gassing voltage is 13.8
As the temperature gets lower, then charging voltage needs to be higher to "drive" the charging. At -30 c (-22 f) charging voltage ought to be about 16.2. This is a problem for an RV, because the computer boards for the fridge, furnace and other devices may only be rated about 15.4 volts. The battery will still charge at a lower voltage--but it may take a lot more time.
For example, at 12.8 volts, and 25 c (77 f) it may take 168 hours to fully charge a battery.
I hope this "thumbnail" of what may happen helps.
โFeb-15-2021 04:39 PM
PanhandlePlainsman wrote:All I have. Works fine.
The only volt meter I have now is a digital one plugged into a cigarette lighter type plug in the bedroom. That may not be sufficient.
โFeb-15-2021 04:27 PM
PanhandlePlainsman wrote:
The only volt meter I have now is a digital one plugged into a cigarette lighter type plug in the bedroom. That may not be sufficient.