Thread: Battery charging question

I just returned a group 27 ever star maxx battery to Walmart that was less than a year old. I went head an upgraded to a es maxx 29 125 ah battery. The charger I use is a schumacher 15 amp charger I have always charged my batteries on the gel setting is has a std and ATM setting as well as it shuts off so it does net overcharge I wanted to make sure I was using the right settings or not. I also charge on 15 amp and when it gets to 100 I put it on trickle thanx to anyone who can help me. I also charge the battery on slow(turtle) not fast (rabbit)