PD4655 Charging Graph
I have been reading quite a bit about different converters and charge rates, specifically some claims that PD's seem to drop off earlier than other brands. That is not what I have noticed on my setup,...
Forum Discussion
Excellent work!
The thing that stands out most IMO is the "marker" for when to stop the gen at 90%. With Wets I find that to be at near 5 amps per 110AH of bank at 14.5v so for 300AH that would be when amps have tapered to 13.6a
Here we see with 300AH of AGM (Lifeline type) 90% is reached at 30a or 10a per 100. So you could stop the gen sooner.
My ugly graph with Wets shows a 50-90 on 300AH with 55amps would take 190 minutes. (300/220 x 139) The AGMs above took 150 minutes.
Since both bulks are the same at 55a, the time saving with the AGMs has to be in a faster Absorption Stage at the same 14.4 voltage indicating a higher acceptance rate with AGMs during absorption.
Perhaps the AGM guys can confirm/deny/elaborate on that aspect. I don't know AGMs well.
Another consequence of that if correct, is you can get a shorter gen time by switching to AGMs instead of going to a higher amp charger with Wets. Could mean no fatter wiring either where you don't change the charger.
With the OP info, it would be possible to estimate just how much time you could save either way and decide what each way would cost in dollars to change to that.
The thing that stands out most IMO is the "marker" for when to stop the gen at 90%. With Wets I find that to be at near 5 amps per 110AH of bank at 14.5v so for 300AH that would be when amps have tapered to 13.6a
Here we see with 300AH of AGM (Lifeline type) 90% is reached at 30a or 10a per 100. So you could stop the gen sooner.
My ugly graph with Wets shows a 50-90 on 300AH with 55amps would take 190 minutes. (300/220 x 139) The AGMs above took 150 minutes.
Since both bulks are the same at 55a, the time saving with the AGMs has to be in a faster Absorption Stage at the same 14.4 voltage indicating a higher acceptance rate with AGMs during absorption.
Perhaps the AGM guys can confirm/deny/elaborate on that aspect. I don't know AGMs well.
Another consequence of that if correct, is you can get a shorter gen time by switching to AGMs instead of going to a higher amp charger with Wets. Could mean no fatter wiring either where you don't change the charger.
With the OP info, it would be possible to estimate just how much time you could save either way and decide what each way would cost in dollars to change to that.
