Sanjeevan

My car hasn't been driven in a while but I have a Porsche battery charger/maintainer hooked up. But recently the full carge went to half-charge and now the full charge lights up green but the half-charge indicator is blinking. This is going on for a few days....I can't find the manual.

Can someone with the manual tell me why the full charge is lit green, and at the same time the half-charge is blinking orange.

Thank you