Yes, a trickle-charger is supposed to make one last longer when not regularly used. The Autozone Gold have a good warranty. Drive the car there and they will test in the parking lot (daytime) and replace for free up to a few years or pro-rate. My son recently did so for our 84 300D. I started using the H8 in my 300D's since $20 cheaper and 10 lb lighter than OE size (Frame 49?, forgot) and about the same CCA. I recall it is even listed now for my cars.

I recall it would bolt in fine if I didn't put a Battery Mat (ebay) under it neutralize acid. To get the clamp on with that, I had to fab a special nut w/ a nose to reach the battery tray's stud. I turned down one end of a long hex coupler nut.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans