Chrysler/Force 45, 50 and 55Hp have had different ignition systems through the years.
In mid 70:es Chrysler had magnito, battery and CD systems at these engines.
The early CD systems was battery driven systems, no self energnized from magnets in the flywheel.
When Chrysler sold the OB business and US Marine bought it and branded it Force, the Prestolite CDI system was used at all the range of OB.s. This was in about 1984-85.
They had one, two and three CDI boxes (with two channels) depending how many cylinder the engine had.
The 50Hp Force in 1987-89 had two CDI different systems.
The pics and video you are showing, the engines has battery ignition system.