Should I install the ZENA® Power Generator in addition to my existing alternator, or should I replace my alternator with the Power Generator?
Except where space is at a premium, our recommended installation method, is one in which the Power Generator is used in addition to the existing alternator/charging system.
MANY BENEFITS (to name just a few):
Vessel electrical system remains stock -- avoiding the possibility of voiding manufacturer's warranties.
House and starting batteries remain separate.
Electrical portion of installation is much simpler.
Lower engine speed for charging (about 10-15% less) -- by using optimal pulleys for alternator drive.
Most "in addition to alternator" installations are no more complicated that those which replace the existing alternator with a ZENA power generator.
Two alternators provide redundancy for emergency use.