Firefly MKII lighting at night
OwnerDan Baker
Owner's Other EVsFirefly
The Interceptor 25
LocationHalifax, Nova Scotia Canada map
Vehicle2013 Sylvan Mirage 820
2013 Sylvan Mirage 20' Pontoon boat
MotorNetgain Hyper9HV 3-Phase AC
144 VDC Nom
DrivetrainTypically a gasoline Outboard but has been
outfitted with the Interceptor 25
Controller SME 500
Included Controller with Hyper9 kit with liquid
cooling chill plate
Batteries88 LG Chem, 144.00 Volt, Lithium-Polymer
88 cell pairs from a 2017 Chevrolet volt pack,
custom BMS
System Voltage144 Volts
Charger ThunderSky TSM2500
DC/DC Converter Thundersky HV144
Instrumentationfishfinder, drive pack and accessory
voltage, motor temperature, fish finder/
depth gauge, motor trim angle
Top Speed27 MPH (43 KPH)
Still tuning
AccelerationVery Brisk!
Range20 Miles (32 Kilometers)
Watt Hours/Mile1400 Wh/Mile
1.2kw/h per mile. As measured from consumption
charger uses at
wall outlet.
EV Miles
Current:65 Miles (104 Kilometers)
    As of 10/15/2021
Seating Capacity9 guests
Curb Weight2,800 Pounds (1,272 Kilograms)
Weight of boat (1800lbs + batteries and
converted outboard)
Tires24" pontoons
Additional FeaturesStereo with Bluetooth and USB
Upgraded Infinity 6" Infinity speakers x 4
1100 watt amp and 10" Dual voice coil subwoofer
Custom Interior accent LED lighting that color changes/flashes
to music.
Custom Pontoon LED lighting, each LED is addressable to flash
and change with 133 programs each.

New Hyper9HV setup works great, very efficient and powerful motor!

Video of take-off : WebPage

Water Skiing behind boat! : WebPage

code by jerry