Air-Conditioned Sun-S Fan Clothing, Sun-S RD9290 RD9291 x 2 Charger Thank you for viewing. I was using this until this year, but the fan started making a strange noise, so I am selling the battery and charger. Operation confirmed. Due to the nature of precision instruments, I cannot accept returns for defects during shipping. Please understand that this is a used item and is non-refundable and non-returnable.