Will a solar calculator's PV cell charge the battery through two diodes?

[John1397]

I have a solar calculator and it also has a battery what I want to know if this solar cell would charge the battery. The positive from solar cell is connected to battery, but the negative from solar cell seems to pass thru two diodes before connecting to battery.

John

 

[davenn]

hi John

the diodes are probably there to stop current from flowing back into the cell from the battery
purpose -- to protect the cell

Dave

 

[Windadct]

Hello John, I am surprised there are 2 ( parallel or series?) - but yes this is to keep the PV cell from discharging the battery. PV Cells essentally work in reverse - they radiate energy when a potential is applied greater then the potential they are creating.