I have an older version of this one. Works great.
https://www.amazon.com/Schumacher-SC1319-Automatic-Battery-Maintainer/dp/B0756Q88J5/ref=sr_1_11?keywords=battery+tender&qid=1645552496&refinements=p_89%3ASchumacher&rnid=2528832011&s=automotive&sr=1-11