The battery is rated 144v and 6.5 Ah.
The SOC range is wider than the FEH but I don't know exactly.

One thing I have noticed is, if you are light on the gas pedal, the battery is hardly ever used. It stays close to max. SOC all the time... unlike the FEH that drains and recharges frequently.

The Honda is of simpler design, and will be much easier to add on other packs in the future if/when the time comes. This will be a good project car.

I have not used other than E10 so far. I'm still on the first tank.
I know of one guy who uses E85 in a 2000 Insight. I do not know if any mods were made first.

Getting 55 MPG at 70 miles per hour
and 70 MPG at 55 miles per hour.

On a rural run, with 45-50 miles per hour I was getting 93 MPG!
-John