Batteries

Do you ever look for replacement batteries and can not find them. I happen to have this small vacuum that I really love and it takes a battery that always needs to be charged. I really love the vacuum but it seems as if over time the battery is holding a charge less and less. I did not yet call the company to see if I can just buy a new battery but I already know that it's probably going to cost me the price of a new vacuum all together. I was very interested to see that you can buy replacement batteries online for a fraction of the cost. They have vtech batteries something that is very hard to find. I am also now wondering if they would carry the size for my small vacuum. I really do love the small vacuum because with three kids I am dragging out my vacuum a million times a day. I'm going to have to find a replacement battery somewhere or I will need to buy a new one. Hopefully I will get lucky and save some money.