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p/n 725.0002  REV 1.4 
 

 

     © 2021 TCW Technologies, LLC. 

12 

 
SPECIFICATIONS: 
 
 
Input Voltage*   

13.7-15 volts DC for battery charging. 

 
Transition Voltage**   10.5-11.5 volts   
 
Input Current:    

1.8 amps on main input for charging 

 

 

 

 

0.7 amps for battery heating at low temps 

 
Pass-thru Current: 

5 amps continuous, 10 amps peak (30 seconds) 

 
Output Voltage:  

10-14 volts DC during back-up operation 

 
Output Current:  

5 amps continuous 
10 amps peak for radio transmissions and transient 
load (30 second duration max) 

 

Battery:

 

 

 

Internal sealed Li-Fe-PO4,  nominal 12.8 volts  

 
Charger: 

Integral high performance fast charger with cell balancing and 
thermal monitoring 

 
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:  -40 C° to 60 C° 

 

 

 

 

Charging:   -40 C° to 40 C° 

 

 

 

 

Connector:     

Standard density 15 pin D-sub,  male on product 

 

 

 

 

 

Note:  Input voltages in excess of 18 volts or reverse polarity may damage unit 

 

*minimum input voltage to start a charge cycle is 13.7 volts, this ensures aircraft alternator is running prior to 
starting a charge cycle.

 

**transition voltage is the voltage level on the input (pin 5) that causes the system to provide output power via the 
internal back-up battery 

Summary of Contents for IBBS-12v-3ah-CRT

Page 1: ...s back up power to critical electronic loads such as EFIS GPS Autopilots Radios 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 a...

Page 2: ... ElectroAir electronic ignitions IBBS must be installed using the current aircraft standards and practices as shown in AC 43 13 2A 1B IBBS products are covered by US Patent 8 189 305 Table of Contents Limitations pg 3 Installation Information pg 3 5 General Product information pg 5 7 Battery Capacity details pg 7 Product Operation pg 8 Instructions for Continued Airworthiness pg 9 11 Specification...

Page 3: ...the IBBS must be connected to the back up power input of the respective device For equipment having only a single power input terminal the IBBS pass thru power function must be utilized This is typical of devices such as comm radios transponders autopilots fuel pumps and electronic ignitions The IBBS system may be fed from a bus that remains active during engine starting such as the master bus or ...

Page 4: ...mmended to populate all three pins join the wires together and feed all of these inputs from the pass thru power breaker Note these pins do not individually correspond to any particular output pin 12 15 The pass thru breaker must be sized for the load that is connected to the IBBS outputs The maximum combined load is 10 amps peak 5 amps continuous If Pins 6 7 8 are used they must be connected to t...

Page 5: ...as follows 8 Complete the installation of the wiring harness and connector prior to attaching the connector to the IBBS product It is essential to ensure the wires do not inadvertently short together during installation Remember the IBBS pack is a back up source of power and is ready to deliver output power even when the aircraft electrical system is in the off state 9 When using the IBBS product ...

Page 6: ...ls below 11 volts Pin 1 is pulled to ground when the back up master switch is turned on this enables the IBBS system If the back up power master switch is enabled and normal aircraft power falls below 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 o...

Page 7: ...peratures 18 C 75 of effective nominal capacity 30 C 70 of effective nominal capacity 40 C 45 of effective nominal capacity Servicing The internal battery in the IBBS system is replaceable however the IBBS product must be returned to TCW Technologies LLC for this service Battery life depends strongly on many factors including operating and storage temperature number of discharge cycles and depth o...

Page 8: ... Master Switch ensure the connected equipment remains energized The low voltage warning light should go out If a separate avionics bus is utilized this may need to be turned ON to continue the operation of equipment connected to the IBBS output 6 Start and operate the aircraft according to normal operating procedures Shut down Procedure 1 Shut down the aircraft engine using normal procedures 2 Shu...

Page 9: ...r from the IBBS product 4 Measure and record at least the following information The time until the first piece of connected equipment no longer functions or the time until the output of back up power supply voltage drops to 9 5 volts Discontinue the test when the back up battery voltage falls below 9 5 volts 5 After completing the endurance test recharge the IBBS product by operating the system wi...

Page 10: ...ch 2 Select engine operation based on the use of only the electronic ignition module provided with back up battery power 3 PULL the circuit breaker feeding pins 4 5 of the IBBS system confirm engine continues to run 4 PULL the circuit breaker feeding pins 6 7 8 of the IBBS confirm the engine continues to run 5 Perform the following test A or test B Test A abbreviated battery test Monitor engine op...

Page 11: ...ngine is properly returned to the off position by following normal run and shut down procedures 10 After completing these tests recharge the IBBS product by operating the system normally for up to 1 5 hours This may be accomplished by operating the aircraft in conditions known to not require back up power or by powering the aircraft system on a suitable ground power source as described in the sect...

Page 12: ...8 volts Charger Integral high performance fast charger with cell balancing and thermal monitoring 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 40 C to 60 C Charging 40 C to 40 C Connector Standard density 15 pin D sub male on product Note Input voltages in excess of 18 ...

Page 13: ...e Lithium Battery Systems Environmental Qualification RTCA DO 160 F F2BBBSC1XYXXF2ZB IX XXXXAZ ZC TT MA3H3L3XXAX DO 160 G Section 14 cat S Section 8 cat S c1 Section 7 cat B Section 22 cat A3H3L3 Power input 14 volts nominal 1 8 amps charging 0 7 amps heating Power Output 12 8 volts nominal 5 amps continuous Battery capacity 2 75 amp hrs at 1C rate 25 C Maintenance Perform annual capacity check ...

Page 14: ... wiring harness View from back of connector Pin Function 5 PWR in charge sensing 2 Batt info 3 Low Volt Warn 12 Output 13 Output 14 Output 15 Output 6 Pwr pass thru input 1 Enable backup switch 9 Ground 10 Ground 11 Ground 15 pin Male Dsub on unit 7 Pwr pass thru input 8 Pwr pass thru input 4 Pwr battery heater ...

Page 15: ...n 725 0002 REV 1 4 2021 TCW Technologies LLC 15 Product mounting footprint 4 mounting holes 0 190 1 50 7 25 2 290 7 70 Top View 0 225 All dimensions in inches Product height 1 75 C G at center of all axis ...

Page 16: ...aus PA USA MODEL IBBS 12V 6AH CRT Input 10 15 volts DC Output 12 volts 8 amps INTEGRATED Back up Battery SYSTEM Back up power output 20 awg 10 amp Main Aircraft Bus charge sense pass thru Pin Function 15 pin Male Dsub on unit 12 Output 13 Output 14 Output 15 Output 9 Ground 10 Ground 11 Ground 5 PWR in charge sensing 2 Batt info 3 Low Volt Warn 6 Pwr pass thru input 1 Back up master switch 7 Pwr p...

Page 17: ...er Battery Info Back up power output 20 awg 22 awg 22 awg 20 awg 20 awg 20 awg 1 6 9 10 2 5 12 main power input 15 pin female Dsub connector 3 Low Voltage Warning LED NOTE Use redundant ground pins 9 10 11 Use redundant power inputs 6 7 8 based on load current of connected equipment 7 11 10 amp 8 13 14 15 output output output www tcwtech com Emmaus PA USA MODEL IBBS 12V 3AH CRT Input 10 15 volts D...

Page 18: ...0 awg 20 awg 1 6 9 10 2 5 12 Main power input 15 pin female Dsub connector 3 Low Voltage Warning LED NOTES 7 11 10 amp 8 13 14 15 output output output Back up power input 3 Use of power pins will power connected equipment even when avionics bus is OFF via pass thru mode Use of input pins 6 7 8 is OPTIONAL 2 Use redundant power inputs 6 7 8 based on load current of connected equipment 1 Use redunda...

Page 19: ...ft 15 000 temp variation 5 Category B Humidity 6 Category B operational shock 7 Category B vibration 8 Category S curve C explosion 9 Category X waterproofness 10 Category Y fluid susceptibility 11 Category x sand and dust 12 Category X fungus 13 Category F salt fog salt spray 14 Category S curve C magnetic effect 15 Category Z power input 16 Category B IX voltage spike 17 Category A audio freq su...

Page 20: ... designed and manufactured RETURN OR REPLACED COMPONENTS any item to be replaced under this Warranty must be returned to TCW Technologies in Emmaus PA or such place as TCW may designate freight prepaid PRODUCT IMPROVEMENTS TCW reserves the right to change or improve its products or any portions thereof without being obligated to provide such a change or improvement for units sold and or shipped pr...

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