I use them, glass mat battery is definitely the way to go. You can use a regular charger on them as long as it’s not over 3 amps. Takes longer to charge but they can recover better than a flooded lead acid battery
I have been using a 2 amp trickle charger on my agm battery , only when it sets a long time in the winter months, altho I drive it year round (some) when the weather permits , and I `m not too busy.
Going on about 5-6 yrs now, sealed batteries are great for trunk install. .
