I haven't had a chance to use it to "battery extinction" which is good cause it indicates a good battery life for what I'm using it for which is cleanup after mowing. Just what I bought it for. I liked it so much, I bought one for my neighbor who helps me a lot on projects.
Like the way we can just blow the dirt, grass clippings out without having to move stuff to sweep. We feel the battery needs charging more often than expected.