Solar Path Light in Shady Area?

I'm considering buying 10 Solar Path Lights to put along my driveway, which is rather shady all day. How long do the usb batteries last under different levles of use when little full sun is available? I understand you can set them to run all evening or just come on when motion is detected. I have several spot light cameras and other cameras, and I only have to charge them every few months, with no solar power.