Cordless handheld vacuums - love them because they're quick to put together, when new, hate them because they quickly turn into a quiet machine with a 60 second battery life . God what a difference! A few years ago I bought a Ryobi One+ Wacker for weeds, then a nail gun and then a leaf blower. So impressed with the performance of the blower I thought a handheld vacuum might actually work. And it is. Only periodically do you need to charge the battery of a standard size (I have large ones for…