Honda E Manual page 17

How the Electric Vehicle Works
Instead of using gasoline to power an internal combustion engine, your vehicle uses stored electricity to power an electric propulsion motor.
As with a gasoline powered vehicle, the efficiency of an electric vehicle (and the vehicle's range) is most impacted by the driver's driving
style. Climate control system usage also has a strong impact with heavy usage negatively affecting the vehicle's range.
There are two types of batteries used in this vehicle, a standard 12-volt battery that powers the airbags, the interior and exterior lights, and
other standard 12-volt systems, and a high voltage lithium ion battery that is used to power the propulsion motor and recharge the 12-volt
battery.
When the power mode is set to VEHICLE OFF, recharging will be suspended for about three days if the power mode remains on VEHICLE
OFF.
Charging the High Voltage Battery
You can recharge the High Voltage battery using a standard household outlet or at a public charging station.
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