The Honda service replacement battery (51R 500CCA) in our HRV was only 1.5years old when it died.
The much larger replacement battery in our HRV (124R 700CCA) has been perfect since I installed 13 months ago.
I have never used a trickle charger on our HRV and it's much colder here than New York!
If I ever have to use a trickle charger regularily on any vehicle, I would re-wire that entire vehicle.
I've just resigned myself to driving around with the HRV headlights on all the time and the alternator putting out 14V+.
If I turn the headlights off, the charge voltage immediately goes to 12.3V or so as detailed in numerous posts on this thread.
My wife is the primary driver of our HRV but I haven't told her to drive around with the head lights on.
She would never remember anyway!
I recommend for everyone to drive their HRV around with the head lights on all the time to keep the battery fully charged.
It seems counter-intuitive but a voltmeter tells the story.
I wonder if this strategy works for those that converted to LED head lights or a newer HRV with LED head lights?
We'll see how the larger battery in our HRV performs this winter.