Review (4/5): Corded vs. Cordless Review
We wore out our battery operated Emjoi after 3 years. So we bought this one with built-in lithium ion batteries that are rechargeable and I read you can use it with the cord plugged it even if the batteries are dead. We learned 2 important things. NO, You cannot use it at all if batteries are dead and you plug it into the wall socket, at least ours doesn't. Secondly, you cannot take out the batteries and put in fresh ones. You must plug into the wall socket and wait a couple of hours. The average run time on the fully charged Lithium Ion is 5 minutes and then it is dead as a paperweight. Our previous battery only operated model would run for about 30 ~ 45 minutes before needing either new batteries or we used rechargeable AA batteries. So I am confused as to why the rechargeable Lithium Ion's don't last near as long compared to normal rechargeable batteries. The seller is sending me a new one and I'll try it out over the weekend to see if it performs better. As far as foot sanders go, Emjoi is the best brand & quality I've found.