P
Pete D
- Jan 1, 1970
- 0
I have an application that requires 2 12V 7.5 AHr lead acid batteries to
be charged from 2 nominally 12V but actually nearer 18V with no load
1.5A solar panels, in the end i hope to get away with 1A solar panels
but first I need to accomodate 1.5A panels.
I don't just want to put a diode in series for risk of overcharging the
batteries.
If I could find a suitable charge controller at a reasonable price I
could buy them in, but I cannot find one.
so looking at building something, I have PIC in circuit anyway for other
reasons, I am considering PWM'ing the solar output to keep it at 27.6V
but this area is new to me, indeed I am not sure this is the best
approach, any ideas on whether this is a suitable approach or if not
what is?
Pete D
be charged from 2 nominally 12V but actually nearer 18V with no load
1.5A solar panels, in the end i hope to get away with 1A solar panels
but first I need to accomodate 1.5A panels.
I don't just want to put a diode in series for risk of overcharging the
batteries.
If I could find a suitable charge controller at a reasonable price I
could buy them in, but I cannot find one.
so looking at building something, I have PIC in circuit anyway for other
reasons, I am considering PWM'ing the solar output to keep it at 27.6V
but this area is new to me, indeed I am not sure this is the best
approach, any ideas on whether this is a suitable approach or if not
what is?
Pete D