Bought 2 such lights exactly one year ago. They both worked fine and I was pleased with them. Very good light, bright flash, great autonomy, exactly what I was looking for. But now one of them has stopped charging. It can run when plugged in, but doesn鈥檛 work when unplugged - pretty useless for biking鈥 Is there a way to contact the supplier for a warranty replacement? The other light keeps working (for now).