Camcorder Optura 50: Battery Issue

[Adonis]

Hi, I recently got hold of three Optura 50 Camcorders with Li-ion batteries and the Charger. However when I let my camera charge overnight (until charge light was consistent orange color) and I took it off the charger, the battery depleted in seconds. I took out the battery and put it back in just for the same thing to happen. And even when I let it charge for hours, the same issue happens. Is this an issue with the actual camera or the batteries. Any help is appreciated. 

[shadowsports]

Greetings,

I would suspect the battery, charger and then the camera.  In that order.  Are these original batteries?   If so they are likely exhausted and no longer able to charge.  The same way a car's battery doesn't typically last the life of a vehicle.