My keyboard stopped working out of nowhere at about a year old. I didn't use it often. Yes sometimes I would forget to turn it off, but I don't think that was enough to kill it! Found this article and decided to give it a try. Got my ML2032 battery on Amazon for less than $10. Great step-by-step instructions. Once I got through the difficulty of removing the old battery, replacing it was easy. Worked fine the first night but next day it was dead again. I don't know if it is the battery or just a defective keyboard. Either way I think its time for me to call a quits with this one :( I really liked this keyboard too!