Hello friend . I writeen the lumatiins barnd . I use the lumations invatore and battery in 5.5 years . it is a better in home based use invetore . This invatore ups and bettery is a very good condations in 5.5 years. Very use ful bettery and ups. I no repalcy the bettery in 5.5 years . He is a working in good and bettery back - up very loking and beautiful . I lick this invatore. I recomend the all my friends use the lumations invatore and bettery. Thanks