©2009 Magnum Energy Inc.
12
Operation
Table 3-2, Battery Combining Operation
4.0 Limitations of Throughput
The ME-SBC
TM
can allow charge currents from either battery to
fl
ow through
to the other battery (i.e.
Main Battery
to
Auxiliary Battery
or
Auxiliary
Battery
to the
Main Battery
). When the
MOSFET
turns on inside the ME-
SBC
TM
and the batteries are combined and a signi
fi
cant inrush of current
occurs. This inrush may cause the ME-SBC
TM
to shutdown to protect itself or
reduce how much current it actually lets through to the other battery. If the
ME-SBC
TM
shutsdown to protect itself, it will restart in 10 Seconds and at-
tempt to recombine. If the ME-SBC
TM
reduces the output in order to maintain
a stable output, it will return to full output as soon as the average amperage
through the
MOSFET
lowers to a safe sustainable level.
note 1: When the ME-SBC
TM
is in the reduced output mode it only lets through
about 1/2 of the available amperage. It will continue to operate like this until
the total available Amps safely drops to a level the ME-SBC
TM
can conduct con-
tinuously. With a current probe, it may look like 50% of the rated output.
M ain
B attery B ank
A uxiliary (A U X)
B attery B ank
M E -S B C
S m art B attery C om biner
N e ga tiv e B us-ba r
Average Amps
Output Behavior
Status LED
0 - 25 Amps
Full output
Solid steady GREEN
26 - 30 Amps
in dial-back so as to
maintain some output.
1
Slow blink GREEN
>30 Amps
No output
Fast blink RED
