Some cool battery graphs
I'm checking out the Costco GC2 batteries and Iota 55A converter as well as the new 16-bit a/d for Arduino. Prior to discharging the 208AH GC2 batteries, they were top charged with 16V for about ...
Forum Discussion
In charging with my 150W 12v solar panel, I found that setting the charge controller to 15.0V instead of 14.8V on my 150ah T-1275 on a daily basis gave much better results in terms of SOC in the morning and remaining voltage in the battery. I agree, the battery is there to serve you, it is disposable.
What your graphs are telling me just confirms what my observations were from the start... the WFCO at 13.6V was junk, the PD9245 at 14.4V bulk was better, but just "OK" for dry camping, and the MegaWatt30 set at 14.8V on the Honda Eu1000i, finished off with the solar panel and controller set at 15.0V to try to top charge daily, was the best I've tested, so far. I still doubt that, even at 15.0V, that I was getting to 100% SOC. It's very hard and expensive, in terms of energy wasted, to get to a full 100% SOC.
If I got down to a 5 amp charge rate on the solar panel at 15.0V showing on the charge controller, at the battery too, on a 150ah battery, that was as good as it was going to get, the amperage rate wouldn't drop much further, if any. Parasitic draw accounted for 1 amp of that 5 amp charge rate.
Thanks for taking the time to graph it all out.
What your graphs are telling me just confirms what my observations were from the start... the WFCO at 13.6V was junk, the PD9245 at 14.4V bulk was better, but just "OK" for dry camping, and the MegaWatt30 set at 14.8V on the Honda Eu1000i, finished off with the solar panel and controller set at 15.0V to try to top charge daily, was the best I've tested, so far. I still doubt that, even at 15.0V, that I was getting to 100% SOC. It's very hard and expensive, in terms of energy wasted, to get to a full 100% SOC.
If I got down to a 5 amp charge rate on the solar panel at 15.0V showing on the charge controller, at the battery too, on a 150ah battery, that was as good as it was going to get, the amperage rate wouldn't drop much further, if any. Parasitic draw accounted for 1 amp of that 5 amp charge rate.
Thanks for taking the time to graph it all out.
