MIDTRONICS Advancing Battery Management

Advancing Powerful, Innovative Technologies

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.

3873911
Electronic battery testing device
Inventor: Keith S. Champlin

3909708
Electronic battery testing device
Inventor: Keith S. Champlin

4322685
Automatic battery analyzer including apparatus for determining presence of single bad cell
Inventors: Charles E. Frailing, Thomas Dougherty, Richard Johnson

4816768
Electronic battery testing device
Inventor: Keith S. Champlin

4825170
Electronic battery testing device with automatic voltage scaling
Inventor: Keith S. Champlin

4881038
Electronic battery testing device with automotive voltage scaling to determine dynamic conductance
Inventor: Keith S. Champlin

4912416
Electronic battery testing device with state-of-charge compensation
Inventor: Keith S. Champlin

5140269
Electronic tester for assessing battery / cell capacity
Inventor: Keith S. Champlin

5343380
Method and apparatus for suppressing time-varying signals in batteries undergoing charging or discharging
Inventor: Keith S. Champlin

5469043
Method for optimizing the charging of lead-acid batteries and an interactive charger
Inventors: Jing-Yih Cherng, James K. Klang

5572136
Electronic battery testing device
Inventor: Keith S. Champlin

5574355
Method and apparatus for detection and control of thermal runaway in a battery under charged
Inventors: Stephen J. McShane, Mark Hlavac, Kevin I. Bertness

5583416
Apparatus and method for step-charging batteries to optimize charge acceptance
Inventor: James K. Klang

5585728
Electronic battery tester with automatic compensation for low state-of-charge
Inventor: Keith S. Champlin

5589757
Apparatus and method for step-charging batteries to optimize charge acceptance
Inventor: James K. Klang

5592093
Electronic battery testing device loose terminal connection detection via a comparison circuit
Inventor: August G. Klingbiel

5598098
Electronic battery tester with very high noise immunity
Inventor: Keith S. Champlin

5656920
Method and apparatus for charging a lead-acid battery
Inventors: Jing-Yih Cherng, James K. Klang

5757192
Method and apparatus for detecting a bad cell in a storage battery
Inventors: Stephen J. McShane, Kevin I. Bertness

5821756
Electronic battery tester with tailored compensation for low state-of-charge
Inventors: Stephen J. McShane, Kevin I. Bertness, Keith S. Champlin

5831435
Battery tester for JIS standard
Inventor: Michael E. Troy

5871858
Anti-theft battery
Inventors: Jes Thomsen, Tore Rehnberg

5914605
Electronic battery tester
Inventor: Kevin I. Bertness

5945829
Midpoint battery monitoring
Inventor: Kevin I. Bertness

6002238
Method and apparatus for measuring complex impedance of cells and batteries
Inventor: Keith S. Champlin

6037751
Method and apparatus for charging batteries
Inventor: James K. Klang

6037777
Method and apparatus for determining battery properties from complex impedence / admittance
Inventor: Keith S. Champlin

6051976
Method and apparatus for auditing a battery test
Inventor: Kevin I. Bertness

6081098
Method and apparatus for charging a battery
Inventors: Kevin I. Bertness, Stephen J. McShane

6091245
Method and apparatus for auditing a battery test
Inventor: Kevin I. Bertness

6104167
Method and apparatus for charging a battery
Inventors: Kevin I. Bertness, Stephen J. McShane

6137269
Method and apparatus for electronically evaluating the internal temperature of an electrochemical cell or battery
Inventor: Keith S. Champlin

6163156
Electrical connection for electronic battery tester
Inventor: Kevin I. Bertness

6172483
Method and apparatus for measuring complex impedance of cells and batteries
Inventor: Keith S. Champlin

6172505
Electronic battery tester
Inventor: Kevin I. Bertness

6222369
Method and apparatus for determining battery properties from complex impedance / admittance
Inventor: Keith S. Champlin

6225808
Test counter for electronic battery tester
Inventors: Philip Varghese, Michael Cable, Michael E. Troy, David Lewis

6249124
Electronic battery tester with internal battery
Inventor: Kevin I. Bertness

6259254
Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries
Inventor: James K. Klang

6262563
Method and apparatus for measuring complex admittance of cells and batteries
Inventor: Keith S. Champlin

6294896
Method and apparatus for measuring complex self-immittance of a general electrical element
Inventor: Keith S. Champlin

6294897
Method and apparatus for electronically evaluating the internal temperature of an electrochemical cell or battery
Inventor: Keith S. Champlin

6304087
Apparatus for calibrating electronic battery tester
Inventor: Kevin I. Bertness

6310481
Electronic battery tester
Inventor: Kevin I. Bertness

6313607
Method and apparatus for evaluating stored charge in an electrochemical cell or battery
Inventor: Keith S. Champlin

6313608
Method and apparatus for charging a battery
Inventors: Phillip Varghese, Kevin I. Bertness, Stephen J. McShane

6316914
Testing parallel strings of storage batteries
Inventor: Kevin I. Bertness

6323650
Electronic battery tester
Inventors: Kevin I. Bertness, Jamey L. Butteris

6329793
Method and apparatus for charging a battery
Inventors: Kevin I. Bertness, Stephen J. McShane

6331762
Energy management system for automotive vehicle
Inventor: Kevin I. Bertness

6332113
Electronic battery tester
Inventor: Kevin I. Bertness

6351102
Automotive battery charging system tester
Inventor: Michael E. Troy

6359441
Electronic battery tester
Inventor: Kevin I. Bertness

6363303
Electronic battery tester
Inventor: Kevin I. Bertness

6377031
Intelligent switch for power management
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen

6392414
Electronic battery tester
Inventor: Kevin I. Bertness

6417669
Suppressing interference in AC measurements of cells, batteries and other electrochemical measurements
Inventor: Keith S. Champlin

6424158
Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries
Inventor: James K. Klang

6437957
System and method for providing surge, short and reverse polarity connection protection
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen

6441585
Apparatus and method for testing rechargeable energy storage batteries
Inventor: Kevin I. Bertness

6445158
Vehicle electrical system tester with encoded output
Inventors: Kevin I. Bertness, Michael E. Troy

6456045
Integrated conductance and load test based electronic battery tester
Inventors: Michael E. Troy, Kevin I. Bertness

6465908
Intelligent power management system & head lamp life extender with daytime running light control
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen

6466025
Alternator tester
Inventor: James K. Klang

6466026
Programmable current exciter for measuring AC immittance of cells and batteries
Inventor: Keith S. Champlin

6469511
Battery clamp with embedded environment sensor
Inventors: David J. Vonderhaar, Kevin I. Bertness

6495990
Method and apparatus for evaluating stored charge in an electrochemical cell or battery
Inventor: Keith S. Champlin

6497209
System and method for protecting a cranking subsystem
Inventors: Samy Karuppana, Aly Jetha, Jes Thomsen

6507196
Battery charge indicator
Inventors: Jes Thomsen, Tore Rehnberg

6534993
Electronic battery tester
Inventor: Kevin I. Bertness

6544078
Battery clamp with integrated current sensor
Inventors: A.J. Palmisano, Kevin I. Bertness

6556019
Electronic battery tester
Inventor: Kevin I. Bertness

6566883
Electronic battery tester
Inventors: Kevin I. Bertness, David J. Vonderhaar

6586941
Battery tester with databus
Inventors: Kevin I. Bertness, Stephen J. McShane

6597150
Method of distributing jump start booster packs
Inventors: Kevin I. Bertness, Ronald J. Ortiz

6621272
Programmable current exciter for measuring AC immittance of cells and batteries
Inventor: Keith S. Champlin

6621314
Kelvin clamp for electrically coupling to a battery contact
Inventors: Kevin I. Bertness, Jamey L. Butteris, Daniel C. Cox

6633165
In-vehicle battery monitor
Inventor: Kevin I. Bertness

6635974
Self-learning power management system and method
Inventors: Aly Jetha, Samy Karuppana, Jes Thomsen

6696819
Battery charge control device
Inventor: Kevin I. Bertness

6707303
Electronic battery tester
Inventors: Kevin I. Bertness, Jamey L. Butteris

6871151
Electronic battery tester with network communication
Inventor: Kevin I. Bertness

6885195
Method and apparatus for auditing a bettery test
Inventor: Kevin I. Bertness

6906522
Battery tester with battery replacement output
Inventors: Kevin I. Bertness, William G. Sampson

6906523
Method and apparatus for testing cells and batteries embedded in series / parallel systems
Inventors: Kevin I. Bertness, Keith S. Champlin

6909287
Energy management system for automotive vehicle
Inventor: Kevin I. Bertness

6913483
Cable for electronic battery tester
Inventors: Harvey A. Restaino, Edward J. Amato

6914413
Alternator tester with encoded output
Inventors: Kevin I. Bertness, Michael E. Troy

6930485
Electronic battery tester with battery failure temperature determination
Inventor: Kevin I. Bertness

6933727
Electronic battery tester cable
Inventor: Kevin I. Bertness

6941234
Query-based electronic battery tester
Inventor: Kevin I. Bertness

7081755
Battery tester capable of predicting a discharge voltage/discharge current of a battery
Inventors: James K. Klang, Gregory P. Fang

7106070
Broadband low-conductance cables for making kelvin connections to electrochemical cells and batteries
Inventors: Kevin I. Bertness, Keith S. Champlin

7154276
Method and apparatus for measuring a parameter of a vehicle electrical system
Inventor: Kevin I. Bertness