Remember that if you get 5 years out of your car battery, any manufacturer, you're living on borrowed time....seriously.
The Deka's are what we get from Hensley, and these batteries are (no pun intended) treated brutally. Severe draws in service and out of service. Sitting posted with the key on all the time, not running if weather is comfortable and lots of draw and charge cycles.....if not, idling all the time with two climate control systems going all the time. And we did alternators ALL the time.
Before LED lighting systems, we'd be lucky to get 6 months out of a set of batteries. Now we're getting as much as 2-3 years out of them. I haven't seen that in 25 years....and they still get treated the same way. Just attempting to explain the severe abuse these batteries receive in my field.



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