This rechargeable UPS or fan battery with 12V 7Ah Ctype lead-acid battery can last up to 11 hrs on low speed, 7hrs on mid speed, 4hrs on high speed, 180hrs on Led lights. Charge Time: 10-15hours. Please charge properly before you use it for efficiency and ruggedity sake. Its also one of the most rugged battery ever produced. Its reliable, dependable and efficient. It can also be used for various rechargeable lamps. It can work with any rechargeable fan or UPS that uses 12v 7ah.