Apologies it should have read the LED’S need 0.03A (30Ma) not 0.3A.
Here are my calculations based on a $0.20c per kwh. Please correct me if this is barking mad!
Full charge mode @ 6A:
6A*12v = 72W *3 hrs = 216W *52 weeks = 11.232kwh * $0.20c = $ 2.24 per year.
Float charge mode @ 2A:
2A*12v = 24W*24hrs = 576W*365 = 210.24kwh *0.20c = $42.48 per year.
To keep the battery charged using the same amount of power it uses at 6A for 3 hrs once a week, the charger would have to consume 11.23kw over 365 days. That would give a charger output of:
11.23kw/365 days = 30W/24hrs = 1.28W/12v = 0.1A output.
Is 0.1A (100mA) output is enough to keep my battery topped up?
Here are my calculations based on a $0.20c per kwh. Please correct me if this is barking mad!
Full charge mode @ 6A:
6A*12v = 72W *3 hrs = 216W *52 weeks = 11.232kwh * $0.20c = $ 2.24 per year.
Float charge mode @ 2A:
2A*12v = 24W*24hrs = 576W*365 = 210.24kwh *0.20c = $42.48 per year.
To keep the battery charged using the same amount of power it uses at 6A for 3 hrs once a week, the charger would have to consume 11.23kw over 365 days. That would give a charger output of:
11.23kw/365 days = 30W/24hrs = 1.28W/12v = 0.1A output.
Is 0.1A (100mA) output is enough to keep my battery topped up?