|The Hellroaring BIC-75150 and BIC-75300 were
designed primarily as an automatic battery combiner for efficient charging of multiple
batteries. Either model has the capability to be manually switched ON
to combine the batteries for extra engine cranking power.
The BIC-75150 can handle up to 150 amps for a significant power boost when
a main battery will almost crank (clicking solenoid) or cranks slowly. The BIC-75300
when configured for high current, can handle up to 300 amps to fully crank
your typical gasoline engine even with a completely discharged main
battery. To properly acheive this capability, you must use properly sized wiring and
a properly rated (in terms of CCA) backup battery. The backup battery should
be (CCA) rated at least as high as the original vehicle manufacturer's main battery.
A higher rating is better.
If you have an unusual application that requires even higher currents
(such as a Diesel Engine), then you can parallel the units as needed. A typical
automotive Diesel Engine will require 2 units for backup
cranking. Large Diesel Engines may require more.