REV 1.6
© 2019 TCW Technologies, LLC.
5
10.
When using the IBBS product to provide back-up power to an electronic ignition
system (CDI), pull-able circuit breakers must be used for over current protection as shown
on page 18.
11.
When using the IBBS product to provide back-up power to an electronic ignition
system, connect one and only one CDI module to an IBBS unit. DO NOT CONNECT
any other loads to the IBBS. It must only be used to back up the CDI unit.
Product Details and General Information:
The Charging System:
The IBBS automatically maintains its internal battery pack. The internal charging circuit
monitors the state of the internal battery and recharges it as necessary when the aircraft is
operational. The maximum input current for battery recharging is 4.0 amps.
If the internal battery is fully discharged for any reason it may require up to two hours of
recharge time with the normal aircraft bus on. NOTE: Do not attempt to recharge the IBBS
product by using an external battery charger directly connected to the input of the IBBS.
Battery chargers typically provide pulsating voltages that may damage the IBBS product if
the system is not connected to a typical primary aircraft battery.
Back-up Power Master Switch:
The IBBS has one input switch connection as identified in the wiring diagrams: Back-up
Power Master. This switch enables back-up power from the IBBS system to be available on
the output wires when power on the normal aircraft bus falls into the range of 10-11 volts.
If the back-up power master switch is enabled and normal aircraft power falls into the range
of 10-11 volts, then the internal back-up battery will be connected to the outputs and be
utilized to supply back-up power to the connected load.
If the normal aircraft power bus is above 11 volts, then the outputs are energized with normal
aircraft power (if the pass thru-power connections are utilized) and the back-up battery
remains off-line. This operation occurs regardless of the state of the Back-up Power Master
switch. This allows for automatic pass through of power during normal operation.
Ground Based Recharging:
To accomplish ground based charging, connect an approved battery charger or DC power
source to the main aircraft battery and energize the main aircraft power bus by turning on the
master switch, leave all other aircraft loads in their off state. Note, the ground base source
of power must be able to supply the load current of all devices that can not be turned off in
this nominal state, plus the 4.0 amps of IBBS recharge current. Leave the ground based
charging system connected and powered until the IBBS system completes its recharge cycle
of its internal battery, for a fully discharged battery this may take up to two hours.
Alternately, a ground based charger is available from TCW Technologies LLC., model #
IBBS-12v-CHARGER-LI-FE. This charger may be used for recharging the IBBS unit as
well as keeping it topped off during long term product storage. (9 months or longer)
