Midtronics is founded on innovation and technical expertise. The company's more then 25-year history has resulted in a significant portfolio of patents and other intellectual property that are at the heart of new products and technologies for effective battery management. Further, The Midtronics engineering staff continually seeks to expand the technology related to battery testing and charging.
As an organization rooted in innovation and technological development, Midtronics has amassed a significant portfolio of patents and technologies. This continued creativity and diligence in creating and improving our core technology will help to maintain our leadership position in battery testing. Following is our list of U.S. patents. Many of these are also covered in patents and patent applications globally.
6933727
Electronic battery tester cable
Claims: 23
Inventor: Kevin I. Bertness
6941234
Query based electronic battery tester
Claims: 27
Inventor: Kevin I. Bertness
7081755
Battery tester capable of predicting a discharge voltage/discharge current of a battery
Claims: 20
Inventors: James K. Klang, Gregory P. Fang
7106070
Broad-band low conductance cables for making kelvin connections to electrochemical cells and batteries
Claims: 26
Inventors: Kevin I. Bertness, Keith S. Champlin
7,154,276 (pdf)
Method and Apparatus for Measuring a Parameter of a Vehicle Electrical System
Claims: 24
Inventor: Kevin I. Bertness
3873911
Electronic battery testing device
Claims: 25
Inventor: Keith S. Champlin
3909708
Electronic battery testing device
Claims: 23
Inventor: Keith S. Champlin
4322685
Automatic battery analyzer including apparatus for determining presence of single bad cell
Claims: 50
Inventors: Charles E. Frailing, Thomas Dougherty, Richard Johnson
4816768
Electronic battery testing device
Claims: 40
Inventor: Keith S. Champlin
4825170
Electronic battery testing device with automatic voltage scaling
Claims: 19
Inventor: Keith S. Champlin
4881038
Electronic battery testing device with automotive voltage scaling to determine dynamic conductance
Claims: 19
Inventor: Keith S. Champlin
4912416
Electronic battery testing device with state-of-charge compensation
Claims: 10
Inventor: Keith S. Champlin
5140269
Electronic tester for assessing battery / cell capacity
Claims: 45
Inventor: Keith S. Champlin
5343380
Method and apparatus for suppressing time-varying signals in batteries undergoing charging or discharging
Claims: 8
Inventor: Keith S. Champlin
5469
043
Method for optimizing the charging of lead-acid batteries and an interactive charger
Claims: 9
Inventors: Jing-Yih Cherng, James K. Klang
5572136
Electronic battery testing device
Claims: 11
Inventor: Keith S. Champlin
5574355
Method and apparatus for detection and control of thermal runaway in a battery under charged
Claims: 20
Inventors: Stephen J. McShane, Mark Hlavac, Kevin I. Bertness
5583416
Apparatus and method for step-charging batteries to optimize charge acceptance
Claims: 21
Inventor: James K. Klang
5585728>
Electronic battery tester with automatic compensation for low state-of-charge
Claims: 26
Inventor: Keith S. Champlin
5589757
Apparatus and method for step-charging batteries to optimize charge acceptance
Claims: 45
Inventor: James K. Klang
5592093
Electronic battery testing device loose terminal connection detection via a comparison circuit
Claims: 11
Inventor: August G. Klingbiel
5598098
Electronic battery tester with very high noise immunity
Claims: 12
Inventor: Keith S. Champlin
5656920
Method and apparatus for charging a lead-acid battery
Claims: 34
Inventors: Jing-Yih Cherng, James K. Klang
5757192
Method and apparatus for detecting a bad cell in a storage battery
Claims: 12
Inventors: Stephen J. McShane, Kevin I. Bertness
5821756
Electronic battery tester with tailored compensation for low state-of-change
Claims: 12
Inventors: Stephen J. McShane, Kevin I. Bertness, Keith S. Champlin
5831435
Battery tester for JIS standard
Claims: 6
Inventor: Michael E. Troy
5871858
Anti-theft battery
Claims: 26
Inventors: Jes Thomsen, Tore Rehnberg
5914605
Electronic battery tester
Claims: 11
Inventor: Kevin I. Bertness
5945829
Midpoint battery monitoring
Claims: 9
Inventor: Kevin I. Bertness
6002238
Method and apparatus for measuring complex impedance of cells and batteries
Claims: 42
Inventor: Keith S. Champlin
6037751
Method and apparatus for charging batteries
Claims: 33
Inventor: James K. Klang
6037777
Method and apparatus for determining battery properties from complex impedence / admittance
Claims: 21
Inventor: Keith S. Champlin
6051976
Method and apparatus for auditing a battery test
Claims: 54
Inventor: Kevin I. Bertness
6081098
Method and apparatus for charging a battery
Claims: 101
Inventors: Kevin I. Bertness, Stephen J. McShane
6091245
Method and apparatus for auditing a battery test
Claims: 29
Inventor: Kevin I. Bertness
6104167
Method and apparatus for charging a battery
Claims: 34
Inventors: Kevin I. Bertness, Stephen J. McShane
6137269
Method and apparatus for electronically evaluating the internal temperature of an electrochemical cell or battery
Claims: 11
Inventor: Keith S. Champlin
6163156
Electrical connection for electronic battery tester
Claims: 20
Inventor: Kevin I. Bertness
6,172,483 B1
Method and apparatus for measuring complex imedance of cells and batteries
Claims: 52
Inventor: Keith S. Champlin
6,172,505 B1
Electronic battery tester
Claims: 42
Inventor: Kevin I. Bertness
6,222,369 B1
Method and apparatus for determining battery properties from complex impedance / admittance
Claims: 25
Inventor: Keith S. Champlin
6,225,808 B1
Test counter for electronic battery tester
Claims: 25
Inventors: Philip Varghese, Michael Cable, Michael E. Troy, David Lewis
6249124
Electronic battery tester with internal battery
Claims: 56
Inventor: Kevin I. Bertness
6259254
Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries
Claims: 20
Inventor: James K. Klang
6262563
Method and apparatus for measuring complex admittance of cells and batteries
Claims: 94
Inventor: Keith S. Champlin
6294896
Method and apparatus for measuring complex self-immitance of a general electrical element
Claims: 100
Inventor: Keith S. Champlin
6294897
Method and apparatus for electronically evaluating the internal temperature of an electrochemical cell or battery
Claims: 37
Inventor: Keith S. Champlin
6304087
Apparatus for calibrating electronic battery tester
Claims: 20
Inventor: Kevin I. Bertness
6310481
Electronic battery tester
Claims: 14
Inventor: Kevin I. Bertness
6313607
Method and apparatus for evaluating stored charge in an electrochemical cell or battery
Claims: 19
Inventor: Keith S. Champlin
6313608
Method and apparatus for charging a battery
Claims: 120
Inventors: Phillip Varghese, Kevin I. Bertness, Stephen J. McShane
6316914
Testing parallel strings of storage batteries
Claims: 32
Inventor: Kevin I. Bertness
6,323,650 B1
Electronic battery tester
Claims:40
Inventors: Kevin I. Bertness, Jamey L. Butteris
6329793
Method and apparatus for charging a battery
Claims: 78
Inventors: Kevin I. Bertness, Stephen J. McShane
6331762
Energy management system for automotive vehicle
Claims: 299
Inventor: Kevin I. Bertness
6332113
Electronic battery tester
Claims: 47
Inventor: Kevin I. Bertness
6351102
Automotive battery charging system tester
Claims: 123
Inventor: Michael E. Troy
6359441
Electronic battery tester
Claims: 22
Inventor: Kevin I. Bertness
6363303
Electronic battery tester
Claims: 67
Inventor: Kevin I. Bertness
6377031
Intelligent switch for power management
Claims: 25
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen
6392414
Electronic battery tester
Claims: 19
Inventor: Kevin I. Bertness
6417669
Suppressing interference in AC measurements of cells, batteries and other electrochemical measurements
Claims: 98
Inventor: Keith S. Champlin
6424158
Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries
Claims: 40
Inventor: James K. Klang
6437957
System and method for providing surge, short and reverse polarity connection protection
Claims: 27
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen
6441585
Apparatus and method for testing rechargeable energy storage batteries
Claims:34
Inventor: Kevin I. Bertness
6445158
Vehicle electrical system tester with encoded output
Claims: 118
Inventors: Kevin I. Bertness, Michael E. Troy
6456045
Integrated conductance and load test based electronic battery tester
Claims: 36
Inventors: Michael E. Troy, Kevin I. Bertness
6465908
Intelligent power management system & head lamp life extender with daytime running light control
Claims: 33
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen
6466025
Alternator tester
Claims: 31
Inventor: James K. Klang
6466026
Programmable current exciter for measuring AC immitance of cells and batteries
Claims: 11
Inventor: Keith S. Champlin
6469511
Battery clamp with embedded environment sensor
Claims: 33
Inventors: David J. Vonderhaar, Kevin I. Bertness
6495990
Method and apparatus for evaluating stored charge in an electrochemical cell or battery
Claims: 25
Inventor: Keith S. Champlin
6497209
System and method for protecting a cranking subsystem
Claims: 22
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen
6507196
Battery charge indicator
Claims: 9
Inventors: Jes Thomsen, Tore Rehnberg
6534993
Electronic battery tester
Claims: 28
Inventor: Kevin I. Bertness
6544078
Battery clamp with integrated current sensor
Claims: 36
Inventors: A.J. Palmisano, Kevin I. Bertness
6556019
Electronic battery tester
Claims: 17
Inventor: Kevin I. Bertness
6566883
Electronic battery tester
Claims: 22
Inventors: Kevin I. Bertness, David J. Vonderhaar
6586941
Battery tester with databus
Claims: 15
Inventors: Kevin I. Bertness, Stephen J. McShane
6597150
Method of distributing jump start booster packs
Claims: 14
Inventors: Kevin I. Bertness, Ronald J. Ortiz
6621272
Programmable current exciter for measuring AC immitance of cells and batteries
Claims: 35
Inventor: Keith S. Champlin
6621314
Kelvin clamp for electrically coupling to a battery contact
Claims: 23
Inventors: Kevin I. Bertness, Jamey L. Butteris, Daniel C. Cox
6633165
In-vehicle battery monitor
Claims:130
Inventor: Kevin I. Bertness
6635974
Self-learning power management system and method
Claims: 38
Inventors: Aly Jetha, Samy Karuppana, Jes Thomsen
6696819
Battery charge control device
Claims: 13
Inventor: Kevin I. Bertness
6707303
Electronic battery tester
Claims: 33
Inventors: Kevin I. Bertness, Jamey L. Butteris
6871151
Electronic battery tester with network communication
Claims: 43
Inventor: Kevin I. Bertness
6885195
Method and apparatus for auditing a bettery test
Claims: 34
Inventor: Kevin I. Bertness
6906522
Battery tester with battery replacement output
Claims: 59
Inventors: Kevin I. Bertness, William G. Sampson
6906523
Method and apparatus for testing cells and batteries embedded in series / parallel systems.
Claims: 70
Inventors: Kevin I. Bertness, Keith S. Champlin
6909287
Energy management system for automotive vehicle
Claims: 15
Inventor: Kevin I. Bertness
6913483
Cable for electronic battery tester
Claims: 15
Inventors: Harvey A. Restaino, Edward J. Amato
6914413
Alternator tester with encoded output
Claims: 43
Inventors: Kevin I. Bertness, Michael E. Troy
6930485
Electronic battery tester with battery failure temperature determination
Claims: 24
Inventor: Kevin I. Bertness
