Tihis is a nice product. I bought this product 1 year ago.its batery backup is also good till now. For me this is a good product because I need only the backup of only 4-5 hours.but it give me enough power suply for me.Though it is so old but its battery back up is good till date.This is also good for a student like me who is living single.I would strongly recommend to buy this product.