They're on a single string so don't hang down like icicles.
This sounds like the panel location problem and the solar cells aren’t getting enough sun light. If you can try changing the angle and the location of the panel. At this time of year (mid summer) in the UK the solar panel should be almost horizontal, I’d also suggest allowing the batteries to charge for 2-3days without switching the lights on. If you continue to have problems please contact us.
These are cool white. Click here for Warm White Fairy Lights