Has anyone used a fluid transfer pump for water changes?

[Rottenninja]

I'd like to keep something like this in a jug for top off and to refill after a water change. Any thoughts? I'm not sure I could adapt it to my jug's threaded mouth.

 

[SVTChili]

I use a battery powered fuel transfer pump to fill my ATO. Cost about 30$ on Amazon and didn’t have to retrofit anything, just stick one end in the bucket and another in the ATO.