Need help identifying this battery type!

So, Im helping out a buddy with this old car of his in storage. Battery is dead. Ive got a trickle charger for him to see if the battery can charge and has a chance to stay alive however we cannot for the life of us figure out if this is a conventional battery or an AGM. I assume its detrimental to have the charger on the wrong setting, aside from amps, for the battery. There is nothing written on the face, top, or side of the battery that is giving information helping this matter either.

The battery is called Energizer Max 108-35N. Shoptoit is the only website that Ive come across that has this battery listed; however no information pertaining to this dilemma..

Im curious if anyone has used this battery or has some knowledge on the matter.

Thanks in advance!

The Max looks like it is a regular wet cell battery.