Who says you can't tell the battery State of Charge (SOC) by looking at the voltage? All you need to know is the total AH capacity and the rate of discharge/charge. Use the following formula to calculate the "C rate" and then use the chart in the link to determine SOC
C rate (C/xx) = Battery AH capacity/xx = amps out/in
or more usefully
Battery AH capacity/amps in/out = xx where the xx is C/xx
this will tell you the C rate curve to use.
http://www.arttec.net/Solar_Mower/4_Electrical/Battery Charging.pdf
Thoughts?
C rate (C/xx) = Battery AH capacity/xx = amps out/in
or more usefully
Battery AH capacity/amps in/out = xx where the xx is C/xx
this will tell you the C rate curve to use.
http://www.arttec.net/Solar_Mower/4_Electrical/Battery Charging.pdf
Thoughts?