The batteries I could not use. They were faster than average empty. The printed memory capacity of 2450 m / Ah can not vote according to my understanding. I have the same size batteries with a capacity of 800 m / Ah. An LED camping lamp lights up with 800 m / Ah battery three times as long as the purchased here. After several charges two batteries functioned even no more. As these batteries could be specified with 2450m / Ah is a mystery to me