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 ________________________________________________________________ 
MFJ-4416B Super Battery Booster                  

Instruction and Technical Manual 

 

12

L

IMITED 

12 M

ONTH 

W

ARRANTY

 

 
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, or 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 under warrantee provided the product is returned 
postage prepaid to MFJ Enterprises, Inc. with a personal check, cashiers check, or money 
order for 

$7.00 

covering postage and handling. 

3.

 

This warranty is 

NOT

 void for owners who attempt to repair defective units.  Technical 

consultation is available by calling the Service Department at 662-323-0549 or the MFJ 
Factory at 662-323-5869. 

4.

 

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

5.

 

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 unrepaired. 

6.

  

Under no circumstances is MFJ Enterprises, Inc. liable for consequential damages to 
person or property by the use of any MFJ products. 

7.

 

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. 

8.

 

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

9.

 

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.  

10.

 

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

MFJ Enterprises, Inc., 
300 Industrial Park Road 
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. 

11.

 

This warranty gives you specific rights, and you may also have other rights which vary 
from state to state. 

 

Summary of Contents for MFJ-4416B

Page 1: ...AUTION Read All Instructions Before Operating Equipment MFJ ENTERPRISES INC 300 Industrial Park Road Starkville MS 39759 USA Tel 662 323 5869 Fax 662 323 6551 COPYRIGHT 2006 MFJ ENTERPRISES INC C Model MFJ 4416B VERSION 1A ...

Page 2: ...ONTROLS AND INDICATORS 5 a TOP INPUTS AND OUTPUTS 5 b SIDE PANEL CONTROLS AND INPUTS 6 6 INTERNAL HEADER AND VOLTAGE CONTROL 7 7 THEORY OF OPERATION 8 8 TYPICAL EFFICIENCY 9 5 MFJ 4416B EASY START INSTRUCTIONS 10 6 IN CASE OF DIFFICULTY 11 7 TECHNICAL ASSISTANCE 11 LIST OF FIGURES Figure 1 Top Inputs and Outputs 5 Figure 2 Side A Controls and Indicators 6 Figure 3 Side B Jack 6 Figure 4 Internal H...

Page 3: ... Factory set at 13 8 volts this voltage is adjustable anywhere from 12 to 13 8 volts When setting the voltage at 12 volts input voltages greater than 12 volts pass through but the efficiency is greater Typically saving over 30 watts in heat dissipation during transmit Selectable Minimum Input Voltage You have the choice of the minimum input voltage the MFJ 4416B will operate on Set from the factor...

Page 4: ...e component selections ensure solid performance for years to come Fully covered by MFJ s No Matter What one year limited warranty TYPICAL SPECIFICATIONS Output Current 25 Amps Peak Output Voltage 13 8 Volts at 9 13 8 volts input Before attempting to operate your MFJ 4416B please read the manual thoroughly It contains important details about setting up your unit to obtain the best performance ...

Page 5: ... Figure 1 MFJ 4416B Top Inputs and Outputs 1 5 Way High Power Binding Post Negative Input 2 Anderson PowerPoleTM Negative Input 3 Anderson PowerPoleTM Positive Input 4 5 Way High Power Binding Post Positive Input 5 5 Way High Power Binding Post Positive Output 6 Anderson PowerPoleTM Positive Output 7 Anderson PowerPoleTM Negative Output 8 5 Way High Power Binding Post Negative Output ...

Page 6: ...D The LED Illuminates the low voltage trip threshold has been crossed If the latching feature is enabled the MFJ 4416B must be removed from the input voltage source and allowed to discharge to reset the cutout Side B Controls and Indicators 1 2 Figure 3 MFJ 4416B Side B Jacks 1 Remote Jack This Jack allows the MFJ 4416BRC Remote Control and metering unit to be attached to the MFJ 4416B This allow ...

Page 7: ...factory at 13 8 volts this level is adjustable from 12 to 13 8 volts Audio Alert Enable This jumper enables the audio alert Any time the voltage drops below the level set by the input voltage cutout you will be alerted by the Piezo buzzer To disable remove the jumper Cutout Latch When jumpered the Boost Regulator IC will be shutdown anytime the voltage drops below the level set by the Input Voltag...

Page 8: ...econdary voltage of the toroidal transformer is the input voltage plus the voltage of the transformer primary windings By doing it this way the transformer only needs to supply the difference of the output voltage and the battery voltage This reduces the power requirements of the transformer and switching FETs The output is then rectified by the Dual Diode D1 Output filtering consists of L2 and si...

Page 9: ...h If the jumper is placed on the Latching Header then this high level is then inverted and fed back into the input of the comparator which holds the comparators output high Reset of the low voltage disconnect is accomplished by disconnecting the input voltage Typical efficiency at 13 8VDC output and 12VDC output are shown in the tables below Typical Efficiency Output set to 13 8V Vin Iin Vout Iout...

Page 10: ...ect trips under high demand conditions This can be caused by 2 things First ensure your battery is charged A discharged battery will recover voltage under low current conditions but once current is drawn it will immediately drop below the cutout voltage Second ensure the wiring on the input side of the unit is adequate for the current being drawn and the lengths of the cable run Enable LED fails t...

Page 11: ...________________________________________________________________ MFJ 4416B Super Battery Booster Instruction and Technical Manual 11 Figure 6 Schematic Diagram ...

Page 12: ...fective units Technical consultation is available by calling the Service Department at 662 323 0549 or the MFJ Factory at 662 323 5869 4 This warranty does not apply to kits sold by or manufactured by MFJ Enterprises Inc 5 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...

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