Mine had never been used. I suspect very few of them have. More like an overstock but they do not intend to misrepresent the product. It does a fine job with making a mist. I posted a video in the other thread
Help with Backpack sprayers - General Fruit Growing - Growing Fruit
If you need distance it might not be up to the challenge.
You might not want a back pack but an ATV sprayer.
New Sprayers 2022 - General Fruit Growing - Growing Fruit
I since replace the battery pack with a Lithium Ion based one.