The original battery was NIMH type, Range was boasted as 32 miles although few of these bikes maintained that range for very long as batterys failed quickly.
The range was also speced at some low speed that was not practical, real world driving was more in the 20 mile range.
The original battery consisted of 102 cells in the lower frame, with a fan to cool them.
The second picture shows the batteries with the covers off and motor controller to the right.
This is a picture of the cells out for testing, the pack was being repaired, as cell failure was common with the charging profile used by Vectrix.