Early Construction Designs

Mass-EV Chassis

This is a Trojan T125 6v (3 cell) deep cycle battery (weight 30kg)
This is about 200Ah so is 1.2kWh

A design for a 61 battery chassis

That one includes a controller (left in red) and a bank of supercapacitors between the batteries and controller.

Total pack capacity is 61 x 1.2kWh = 73.2kWh total.

Layout of the car

Batteries only (click for full size)

Components

The wheel size 255/60 R 18 is selected from a large SUV (BMW X5) which needs to carry the weight (converter).
The battery weight is 30kg(66lb), so the pack weighs 3 tonnes (2.95 imp ton).