On Sat, 26 Jul 2014 21:37:44 -0400, "Mr. Luddite"
wrote:

Diehards have a good reputation but I am not sure how much of that is
based on actual performance or on good marketing.

===

The key word in my recommendation is "Platinum". The Platinum
Diehards are made with Absorbed Glass Mat (AGM) technology. AGMs
have a higher charge acceptance rate, superior resistance to deep
cycling damage and low internal resistance (higher cranking amps). I'm
still on my first year with them so stay tuned. So far I'm happy.
Previously I'd been using Exide 8Ds and getting really lousy service
life from them, typically less than 2 years. The 8Ds are real back
breakers so frequent replacement was more than just an issue with
cost.

My inverter bank is going on 5 years now and still performing fairly
well considering how hard the batteries are used. I switched from
Trojan T-105 golf cart batts to the heavy duty T-145s. They cost
more and are a bit heavier but I'm very happy with service life
compared to the T-105s.