This is a good trickle charger if you have to charge outdoors in cold weather ( expensive ) ;

https://www.amazon.com/CTEK-56-958-Automatic-Extreme-Climate/dp/B00GODCLYU/

This is a good all around one:

https://www.amazon.com/NOCO-GENIUS5-Fully-Automatic-Temperature-Compensation/dp/B07W8KJH44/ref=sr\_1\_3?crid=ZAUSODB64Y23&keywords=GENIUS+5&qid=1661047171&s=automotive&sprefix=genius+%2Cautomotive%2C275&sr=1-3