Amps jumping around on AGM finishing charge
At a battery temp of 81 degrees and a float charge of 13.33v, the charge was settling in toward .1 A when it started jumping around more and more. Still settling, but jumping from .02a to .15a. The ...
Forum Discussion
Discharge hours of the battery over time are cumulative. Many hours at say 3% discharge add up in a similar way to sitting around a shorter time at 80% or 50% charge. Any time spent discharged is by definition time spent sulphated to some small degree. Recovering from sulphation seems more problematic than with flooded batteries.
But tactically I want to characterize the battery baseline performance and to do that I want to start from fully charged. Similar to getting a baseline SG in a flooded battery.
Right now I am float charging at a temperature corrected 12.39v. The batteries have taken in almost an amp hour yesterday and today and are down to .05a draw right now. The half amp hour yesterday and 12 hours rest brought the voltage up from 12.89v to 12.90v. When I was fully charged the first time I got to 12.93-12.94v.
Jim
But tactically I want to characterize the battery baseline performance and to do that I want to start from fully charged. Similar to getting a baseline SG in a flooded battery.
Right now I am float charging at a temperature corrected 12.39v. The batteries have taken in almost an amp hour yesterday and today and are down to .05a draw right now. The half amp hour yesterday and 12 hours rest brought the voltage up from 12.89v to 12.90v. When I was fully charged the first time I got to 12.93-12.94v.
Jim
