Safer and better is a "Maintainer"! Does the same as a trickle charger but has a safety feature that shuts off when the battery is fully charged! A trickle charger if not checked can over charge the battery and ruin it.
Sundance(RB)

@sueinmn and @contentandwell, I too put verrrry few miles on my car during 2020 and started putting a reminder on my calendar to start the car every 2-3 weeks just to keep the battery up. Learned an important lesson a few weeks ago when car wouldn't restart while waiting in line for carryout. I'd been switching ignition on and off as the long line ahead progressed and ended up having 2 very nice young men behind push the car out of line into the pkg lot. Called Triple A when battery charger didn't work but before they could get to me, the car restarted. Next day, I took it to battery place and found the battery, still under warranty, very weak. When I told the fella' what I'd been doing and what happened in the line, he suggested I drive the car each time I was starting it to build it up and that starting/stopping in lines was not a good idea...that I'd already figured out on my own!