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MFJ-4416C Super Battery Booster                  

Instruction and Technical Manual 

Version 0A 

16 

FULL 12-MONTH WARRANTY 

MFJ Enterprises, Inc. warrants to the original owner of this product, if manufactured by MFJ Enterprises, 
Inc. and purchased from an authorized dealer or directly from MFJ Enterprises, Inc. to be free from 
defects in material and workmanship for a period of 12 months from date of purchase provided the 
following terms of this warranty are satisfied. 

 

1.

 

The purchaser must retain the dated proof-of-purchase (bill of sale, canceled check, credit 

card or money order receipt, etc.) describing the product to establish the validity of the warranty 
claim  and  submit  the  original  or  machine  reproduction  of  such  proof  of  purchase  to  MFJ 
Enterprises, Inc. at the time of warranty service.  MFJ Enterprises, Inc. shall have the discretion to 
deny  warranty  without  dated  proof-of-purchase.    Any  evidence  of  alteration,  erasure,  of  forgery 
shall be cause to void any and all warranty terms immediately. 

 

2.

 

MFJ  Enterprises,  Inc.  agrees  to  repair  or  replace  at  MFJ's  option  without  charge  to  the 

original  owner  any  defective  product  provided  the  product  is  returned  postage  prepaid  to  MFJ 
Enterprises,  Inc.  with  a  personal  check,  cashiers  check,  or  money  order  for 

$12.00 

covering 

postage and handling. 

 

3.

 

MFJ Enterprises, Inc. will supply replacement parts free of charge for any MFJ product 

under  warranty  upon  request.    A  dated  proof  of  purchase  and  a

  $8.00

  personal  check,  cashiers 

check, or money order must be provided to cover postage and handling. 

 

4.

 

This warranty is 

NOT

 void for owners who attempt to repair defective units.  Technical 

consultation is available by calling (662) 323-5869. 

 

5.

 

This warranty does not apply to kits sold by or manufactured by MFJ Enterprises, Inc. 

 

6.

 

Wired  and  tested  PC  board  products  are  covered  by  this  warranty  provided 

only  the 

wired  and  tested PC  board  product  is  returned.

   Wired  and tested  PC  boards  installed  in the 

owner's cabinet or connected to switches, jacks, or cables, etc. sent to MFJ Enterprises, Inc. will be 
returned at the owner's expense un-repaired.   

 

7.

  

Under  no  circumstances  is  MFJ  Enterprises,  Inc.  liable  for  consequential  damages  to 

person or property by the use of any MFJ products. 

 

8.

 

Out-of-Warranty Service: 

MFJ Enterprises, Inc. will repair any out-of-warranty product 

provided the unit is shipped prepaid.  All repaired units will be shipped COD to the owner.  Repair 
charges will be added to the COD fee unless other arrangements are made. 

 

9.

 

This warranty is given in lieu of any other warranty expressed or implied. 

 

10.

 

MFJ  Enterprises,  Inc.  reserves  the  right to  make  changes  or  improvements  in  design  or 

manufacture  without  incurring  any  obligation  to  install  such  changes  upon  any  of  the  products 
previously manufactured. 

 

11.

 

All  MFJ  products to  be  serviced  in-warranty  or  out-of-warranty  should  be  addressed  to 

MFJ Enterprises, Inc., 300 Industrial Park Rd, Starkville, Mississippi 39759, USA 

and must 

be accompanied by a letter describing the problem in detail along with a copy of your dated proof-
of-purchase and a telephone number. 

 

12.

 

This warranty gives you specific rights, and you may also have other rights, which vary 

from state to state. 

 

Rev 04/08/2011 

 

Summary of Contents for MFJ-4416C

Page 1: ......

Page 2: ...tions 7 External Control 7 Remote Control 8 Operation 9 INTERNAL HEADER AND CONTROL 9 HDR1 Low Voltage Lockout 9 HDR2 Low Voltage Lockout Enable 9 HDR3 Audio Alert Enable 10 HDR4 Low Voltage Boost Tri...

Page 3: ...oblems With its high efficiency boost regulator circuitry it will maintain the desired 13 8 volts at up to 25 amps ICAS from voltages as low as 9 volts The MFJ 4416C has been redesigned to make the de...

Page 4: ...5 Amps ICAS 30A peak Output Voltage 13 8 Volts at 9 13 8 volts input Before attempting to operate your MFJ 4416C please read the manual thoroughly It contains important details about setting up your u...

Page 5: ...nd Outputs 1 5 2 6 3 7 4 8 Figure 1 Top View 1 5 Way High Power Binding Post Negative Input 2 Anderson PowerPole TM Negative Input 3 Anderson PowerPoleTM Positive Input 4 5 Way High Power Binding Post...

Page 6: ...ed Disabled Switch is in the Enabled position 3 Low Battery LED The LED Illuminates the low voltage trip threshold has been crossed If the latching feature is enabled the MFJ 4416C must be removed fro...

Page 7: ...minals crimp lugs banana plugs or wires straight to the 5 way binding posts Follow the connector manufacturers instructions for attaching the terminal lugs Make sure the lugs are tightly crimped to in...

Page 8: ...J 4416BRC and the MFJ 4416C REMOTE CONTROL RJ 45 Jack Figure 5 External Enable to Amp Key Figure 6 Remote Control Figure 7 Ignition Sense EXTERNAL BOOST CONNECTOR DE 9 Pin Function 1 GROUND TO ENABLE...

Page 9: ...es that protect the input and output from exceeding 18V or being reverse wired The MFJ 4416C is not designed to boost the voltage of a 6V electrical system up to 13V and will not run on a positive gro...

Page 10: ...er Enable A jumper on this header enables the Low Voltage Boost Enable function Default is no jumper R8 Voltage Adjust This trimpot sets the output voltage Set from the factory at 13 8 volts this leve...

Page 11: ...voltage The tapped points on the two windings are fed to the common cathode rectifier pair D3 Using MOSFET Q1 as an example for both the Q1 and Q2 circuitry The gate circuit consists of R6 R3 and FB1...

Page 12: ...lding the SMPS boost on The delay is to allow current peaks during SSB and CW that pull that battery low and trigger the SMPS to be held allowing a continuous SMPS boost output to assure a constant vo...

Page 13: ...e will drop fast with any load The battery life may suffer and the vehicle may not start when the battery is that low http www eetimes com author asp section_id 36 doc_id 1320644 TECHNICAL ASSISTANCE...

Page 14: ..._____________________________________________________________________ MFJ 4416C Super Battery Booster Instruction and Technical Manual Version 0A 14 Schematics Figure 10 SMPS Section Schematic...

Page 15: ..._____________________________________________________________________ MFJ 4416C Super Battery Booster Instruction and Technical Manual Version 0A 15 Figure 11 Control Section Schematic...

Page 16: ...check or money order must be provided to cover postage and handling 4 This warranty is NOT void for owners who attempt to repair defective units Technical consultation is available by calling 662 323...

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