Mercury Smart 1200 Uninterruptible Power Supply UPS is a large capacity UPS providing more backup power and more advanced performance technology. If you’re looking for more backup time of possibly up to 40 minutes, this is the Mercury UPS capacity to go for. The Mercury brand of UPS is widely used in Nigeria and offers dependable performance and good pricing, hence its popularity. Mercury UPS also has a solid technical support. Your Mercury UPS is sure to keep working, yielding handsome returns on your investment.