25 month PHEV battery report

Living in Maine and with recent temps in the +10° to -8° F overnight, also in an unheated garage, we are getting around 33-36 miles per charge (some steep hills around home). This works out about right as we frequently drive to town which is approx. 20 miles away and have to use HV the last 4-6 miles home.
Sadly, we paid the extra to have a heater put in when we bought our 2019 Clarity, not realizing that it was for the engine, not the battery. I've considered using a ceramic heater/fan to warm the battery on those very cold nights, but the effort and how to set it up kept me procrastinating. We use part of a gallon to make it home, and at +/- $2.50/gal, the $1.25 is probably close to what we would spend on electric for the heater, so I've shelved the heater idea.
We are both old geezer conservative drivers, and I like to watch the screen capturing energy downhill and braking, but my wife would rather listen to a story on the road and doesn't pay attention to her driving habits. Still, we both get the last few miles on HV. Only a few miles of the trip is on 55+ roads, while the rest is 40-45 or in town speeds. As such, we are a far cry from 4sallypat's flat SoCal roads - oh the joy of seeing EV 60 on our dash sometime. LOL

GomerF said:

Living in Maine and with recent temps in the +10° to -8° F overnight, also in an unheated garage, we are getting around 33-36 miles per charge (some steep hills around home). This works out about right as we frequently drive to town which is approx. 20 miles away and have to use HV the last 4-6 miles home.
Sadly, we paid the extra to have a heater put in when we bought our 2019 Clarity, not realizing that it was for the engine, not the battery. I've considered using a ceramic heater/fan to warm the battery on those very cold nights, but the effort and how to set it up kept me procrastinating. We use part of a gallon to make it home, and at +/- $2.50/gal, the $1.25 is probably close to what we would spend on electric for the heater, so I've shelved the heater idea.
We are both old geezer conservative drivers, and I like to watch the screen capturing energy downhill and braking, but my wife would rather listen to a story on the road and doesn't pay attention to her driving habits. Still, we both get the last few miles on HV. Only a few miles of the trip is on 55+ roads, while the rest is 40-45 or in town speeds. As such, we are a far cry from 4sallypat's flat SoCal roads - oh the joy of seeing EV 60 on our dash sometime. LOL

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Probably you are doing this already but a couple of things help in cold weather. First is remote climate, sometimes called preconditioning. It will run for up to 30 minutes, as cold as it is now where you are I would run it for the whole 30 minutes. You can start remote climate using either the HondaLink app or the key fob. As long as you are plugged in all of the electricity for preconditioning comes from the charger and won't subtract from your EV range. It's not just for comfort, when you start your trip the heating element and coolant will already be warmed up and the cabin will be partially warmed which will save on battery power.

Second is to always use the seat heater, which doesn't use as much electricity as the cabin heater. I'm guessing with those cold temperatures you are already using the seat heater, but a lot of people (including myself) forget to use the seat heater when the weather is somewhat milder. Most people find that when using the seat heater they can usually set the cabin temperature a little lower.

Again probably you are already doing both of these but just wanted to mention them anyway.

Sorry not to get back here sooner.
Yes, I do use the remote climate (it works best at 240V), and occasionally use the seat heater (one red light) for a bit. Because we Mainers tend to dress for the cold, a cold interior is not really a problem unless it is "wicked cold". My wife never uses either climate or seat heater. (I always make sure she gets in bed first to warm the sheets. LOL) Also the interior temp is set for 64°.

A story: Because my car bumper is up against a wall in the garage, it was difficult to access the block heater cable plug which was installed coming out of the grill. Rerouting that cord was impossible without a lift. Instead, I put in an extension cord with the plug just accessible under the hood above the charge door. The other day the service manager told me that part of the extra time it took to service the car was because the mechanic was looking in manuals to find out what to plug into that cord. LOL
Part of the experience of owning a new type of vehicle is teaching the dealer/mechanics how to service it. My Volt owning neighbor said that he had to insist that his dealer not let an old geezer mechanic work on his car. He said that he could hear the mechanic swearing about the Volt, complaining about having to wear the GD GLOVES!, even when changing the oil, saying it was "just another GD gimmicky vehicle from GM". Neighbor said he figured that if the guy hated working on it, he probably wasn't doing a good job. (We both agreed with the mechanic that some suit in an office made that rule, having never worked on the car.)

Once again, thank you to all of you for your good advice and help.

Proud to say I got a new personal bests these past couple of days. My 2018 Clarity has 42263 miles
My work commute is around 34 miles each way

First, in HV mode only, I got 66.7 mpg and on the return I killed it at 70.1 mpg
The next day, with a full charge, I drove both ways on electric only (68.4 miles) with 2.4 miles left on the battery, essentially getting 70.8 miles from one charge.
I never thought it would be possible, hearing folks doing 60+ miles seemed impossible for me

Some details.
First, I had great weather, around 75-82 F here in Long Island, NY, I had the climate system off.
I drove very gently, over this weekend, keeping the "needle" below the first bar most times, only during some hills I would touch the second bar, slowing down to 45 sometimes, making sure I gently gain momentum and on the downslope. I drove behind a truck on the way to work, not too close for the drag effect, but his style of driving was similar to mine.

I have to say, my leg got a little tired from trying to be so precise.

Had a huge surprise after recharging tonight, I see Honda is using some algorithm to estimate your next EV range based on the last drive, I got a respectable 65.4 miles