5v times 5A times 168 hours is 4200 Wh.
A typical car battery is 12v and 60Ah which is 720 Wh.
So back of fag packet calculation says you need 6 such batteries.
In practice the Pi5s may not use 5A. On the other hand you need to allow for loss in the 12 to 5 volt converter. Also taking alll xWh from an xWh car battery will kill it in not too many cycles.
When considering solar don't be bamboozled by the output spec. Understand what level of sunlight is needed to produce it.
A typical car battery is 12v and 60Ah which is 720 Wh.
So back of fag packet calculation says you need 6 such batteries.
In practice the Pi5s may not use 5A. On the other hand you need to allow for loss in the 12 to 5 volt converter. Also taking alll xWh from an xWh car battery will kill it in not too many cycles.
When considering solar don't be bamboozled by the output spec. Understand what level of sunlight is needed to produce it.
Statistics: Posted by drgeoff — Mon Aug 05, 2024 3:27 pm