STEVAL-L99615C – Low resistance from C1/C2/C3 to GND on new board

Ciao,

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I recently purchased a new STEVAL-L99615C evaluation board and, before connecting any battery pack, I checked the resistance between the cell inputs and ground (GND).

I measured:

• C1 → GND: a few ohms
• C2 → GND: a few ohms
• C3 → GND: a few ohms
• C4 → GND: several megaohms
• C5 → GND: several megaohms
• C0 → GND: a few kiloohms

The board has never been powered with batteries connected and has never been exposed to reverse polarity.
Is this behaviour expected because of the input protection/balancing network, or could the board be faulty?
Has anyone else encountered the same issue?

Thank you.

Ho acquistato di recente una nuova scheda di valutazione STEVAL-L99615C e, prima di collegare qualsiasi pacco batterie, ho verificato la resistenza tra gli ingressi delle celle e la massa (GND).

Ho misurato:

• C1 → GND: pochi ohm
• C2 → GND: pochi ohm
• C3 → GND: pochi ohm
• C4 → GND: diversi megaohm
• C5 → GND: diversi megaohm
• C0 → GND: pochi kΩ

La scheda non è mai stata alimentata con batterie collegate e non è mai stata esposta a inversione di polarità.

Questo comportamento è previsto a causa della rete di protezione/bilanciamento dell'ingresso, oppure la scheda potrebbe essere difettosa?

Qualcun altro ha riscontrato lo stesso problema?

Grazie.