I have a spare GEL battery that I want to maintain off the motorhome. Can anyone recommend a home charger that has a gel setting. I keep coming across automatic chargers which say they will do all types but how do they know that it’s a gel which requires a different charge profile? I’d rather have one that allows me to set it to GEL like my Victron solar charger. I don’t need loads of amps just the ability to top the battery up every now and again.