TCW Technologies


Integrated Back-up Battery System IBBS




     IBBS-12v-3ah      IBBS-12v-6ah




The Integrated Back-up Battery System, IBBS, is an electronic system that combines a Lithium-Iron-Phosphate  (Li-Fe-PO4) battery pack, a charger and switching logic in one convenient package.  The IBBS provides an engineered solution to enable an endurance bus for critical loads found in aircraft. It simplifies the wiring and installation of a source of back-up power by integrating all of the key elements into a single enclosure.  The IBBS system provides back-up power to critical electronic loads such as EFIS, GPS, Autopilots and engine monitor systems.  

     Integral to the IBBS is a lithium-iron-phosphate battery pack and a matched charging system to ensure the battery is properly charged and maintained.  The system also includes switching circuitry to provide a stable source of output power during normal and emergency operations.  The IBBS system also provides signals to other equipment such as EFIS systems to communicate the operating state of the back-up bus as well as the state of the battery.

     The IBBS system connects to the standard aircraft power bus and provides an output to critical equipment that requires back-up power.  Additionally, the IBBS system provides surge and sag protection for connected equipment, allowing operation of critical equipment during engine starting.

     The IBBS system is suitable for use with equipment such as Garmin GNS and GTN series navigators, G3X series of avionics, Grand Rapids Technologies EFIS systems, Advanced Flight Systems EFIS, Dynon EFIS, and MGL EFIS, TruTrak Autopilots and EFIS, Trio Autopilots.                                                                          

     IBBS products are protected by US Patent 8,189,305


      IBBS-12v-3ah          3amp-hour   Li-Fe-Po4 back-up battery system    $230
      IBBS-12v-6ah          6amp-hour   Li-Fe-Po4 back-up battery system    $395

      IBBS-24v-3ah         24 volt, 3amp-hour  Li-Fe-Po4 back-up battery system    $495


      IBBS-dsub-connector:        connector kit   $20
      IBBS-harn-LiFe:               10 ft pre-made harness  $85



Input Voltage:             12-15 volts DC

Transition Voltage *   10.5-11.5 volts 

Input Current:             2.2 amps max continuous on main input for charging

Pass-thru Current:     5 amps continuous, 10 amps peak

Output Voltage:          10-14 volts DC during back-up operation

Output Current:          5 amps continuous
                                    10 amps peak for radio transmissions and transient loads

Battery:                        Internal sealed Li-Fe-PO4

Charger:                      Integral high performance fast charger

Surge Protection:        34 volt active clamp, 1500w 10/1000uS waveform

Wiring:                         15 pin male D-sub on product.

Enclosure:                    Aluminum  7.7” x 2.3” x 1.6”
Weight:                        18 oz.

Temperature range:      Operating  -10 C° to 60 C°
                                       Charging      0 C° to 40 C°


Connector:        Standard density 15 pin male D-sub on product


Download the instruction manual here:

        3 amp- hr   IBBS-12v-3ah
        6 amp- hr   IBBS-12v-6ah

        3 amp-hr, 24 volts   IBBS-24v-3ah

General Wiring Diagram:


On-line ordering:

Solution Graphics
IBBS-12v-3ah     $230        3 amp-hour back-up battery system        
IBBS-12v-6ah    $395        6 amp-hour back-up battery system       
 IBBS-24v-3ah  $495          24 volt 3amp-hr back-up battery system
IBBS-dsub   $20  IBBS connector for Li-Fe-P04 products           
IBBS-Harn-LiFe  $85  10ft. wiring harness with mating dsub connector  



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Last modified 1-18-2017

US Patent 7,719,220 on Safety-Trim and Flap Controller products

US Patent 7,868,478 on IPS product

US Patent 8,189,305 on IBBS products