Current X Voltage source.

Gentleman,
Attached follows a schematic showing two situations;
The figure #1 is showing a 1A current flowing in direction to the “+” pole of a voltage source, and due to that we may say that the voltage source (e.g. a lead-acid battery) is being charged.
On the contrary, the figure #2 shows a 1A current flowing in direction to the “-” pole of a voltage source.
Due that may we say that the voltage source (e.g. a lead-acid battery) is being discharged?
Thank you by your time.
G. L. Serodio

When you are discharging the battery, the current flows form + pole to - pole

When you charge it, the current flows backwards, form - to +

G. L. Serodio

>>Then I ask: how to solve this apparent paradox?

This is the paradox if you observe sources as ideal. In real world sorces have internal impedance.

Mr. Milivoje,
Add 0,025Ω to the voltage source, as internal serie resistance and 1kΩ as internal parallel resistance to the current source and show that the paradox is solved!!
Best regards

I don't understand your question. You can allways transform current source to voltage source and solve for yourself.
Voltage and current sources are just theoretical models.

Best regards

Mr. Milivoje,
I beg your pardon and I will try to clarify what I meant.
The apparent paradox arouse from my affirmation that the “voltage source (e.g. a lead-acid battery) was being discharged without spending its power”. This affirmation was correct but not complete. The true question would be “How the battery was being discharged?” Now, thinking more carefully I may say that the power expended to discharge the appointed voltage source (e.g. a lead-acid battery) was done by the current source reversing chemically the lead battery plates from PbO2 (charged condition) to PbSO4 (discharged condition), due to the fact that those chemical reactions are reversible (charge and discharge).
So at that situation, doesn’t matter if the model is ideal or real, theoretical or practical, there is no paradox, if the correct consideration about the discharge process is taken!!!

Best regards