FR2749397B1 - Procede et dispositif de mesure de l'etat de charge d'un accumulateur - Google Patents

Procede et dispositif de mesure de l'etat de charge d'un accumulateur

Info

Publication number
FR2749397B1
FR2749397B1 FR9607132A FR9607132A FR2749397B1 FR 2749397 B1 FR2749397 B1 FR 2749397B1 FR 9607132 A FR9607132 A FR 9607132A FR 9607132 A FR9607132 A FR 9607132A FR 2749397 B1 FR2749397 B1 FR 2749397B1
Authority
FR
France
Prior art keywords
charge
battery
measuring
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9607132A
Other languages
English (en)
Other versions
FR2749397A1 (fr
Inventor
Jean Jacques Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe Anonyme de Telecommunications SAT
Original Assignee
Societe Anonyme de Telecommunications SAT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Priority to FR9607132A priority Critical patent/FR2749397B1/fr
Publication of FR2749397A1 publication Critical patent/FR2749397A1/fr
Application granted granted Critical
Publication of FR2749397B1 publication Critical patent/FR2749397B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/3644—Constructional arrangements
    • G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/389—Measuring internal impedance, internal conductance or related variables
FR9607132A 1996-06-04 1996-06-04 Procede et dispositif de mesure de l'etat de charge d'un accumulateur Expired - Fee Related FR2749397B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9607132A FR2749397B1 (fr) 1996-06-04 1996-06-04 Procede et dispositif de mesure de l'etat de charge d'un accumulateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9607132A FR2749397B1 (fr) 1996-06-04 1996-06-04 Procede et dispositif de mesure de l'etat de charge d'un accumulateur

Publications (2)

Publication Number Publication Date
FR2749397A1 FR2749397A1 (fr) 1997-12-05
FR2749397B1 true FR2749397B1 (fr) 1998-08-14

Family

ID=9492858

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9607132A Expired - Fee Related FR2749397B1 (fr) 1996-06-04 1996-06-04 Procede et dispositif de mesure de l'etat de charge d'un accumulateur

Country Status (1)

Country Link
FR (1) FR2749397B1 (fr)

Cited By (70)

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US6225808B1 (en) 2000-02-25 2001-05-01 Midtronics, Inc. Test counter for electronic battery tester
US6294897B1 (en) 1999-09-01 2001-09-25 Keith S. Champlin Method and apparatus for electronically evaluating the internal temperature of an electrochemical cell or battery
US6294896B1 (en) 1998-09-11 2001-09-25 Keith S. Champlin Method and apparatus for measuring complex self-immitance of a general electrical element
US6304087B1 (en) 2000-09-05 2001-10-16 Midtronics, Inc. Apparatus for calibrating electronic battery tester
US6313608B1 (en) 1997-11-03 2001-11-06 Midtronics, Inc. Method and apparatus for charging a battery
US6313607B1 (en) 1999-09-01 2001-11-06 Keith S. Champlin Method and apparatus for evaluating stored charge in an electrochemical cell or battery
US6316914B1 (en) 1999-05-05 2001-11-13 Midtronics, Inc. Testing parallel strings of storage batteries
US6323650B1 (en) 1999-04-08 2001-11-27 Midtronics, Inc. Electronic battery tester
US6329793B1 (en) 1996-07-29 2001-12-11 Midtronics, Inc. Method and apparatus for charging a battery
US6332113B1 (en) 1996-10-07 2001-12-18 Midtronics, Inc. Electronic battery tester
US6331762B1 (en) 1997-11-03 2001-12-18 Midtronics, Inc. Energy management system for automotive vehicle
US6351102B1 (en) 1999-04-16 2002-02-26 Midtronics, Inc. Automotive battery charging system tester
US6359441B1 (en) 1999-04-30 2002-03-19 Midtronics, Inc. Electronic battery tester
US6363303B1 (en) 1999-11-01 2002-03-26 Midtronics, Inc. Alternator diagnostic system
US6392414B2 (en) 1997-01-13 2002-05-21 Midtronics, Inc. Electronic battery tester
US6417669B1 (en) 2001-06-11 2002-07-09 Keith S. Champlin Suppressing interference in AC measurements of cells, batteries and other electrical elements
US6424158B2 (en) 1998-07-27 2002-07-23 Midtronics, Inc. Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries
US6441585B1 (en) 1999-06-16 2002-08-27 Midtronics, Inc. Apparatus and method for testing rechargeable energy storage batteries
US6445158B1 (en) 1996-07-29 2002-09-03 Midtronics, Inc. Vehicle electrical system tester with encoded output
US6456045B1 (en) 1999-04-16 2002-09-24 Midtronics, Inc. Integrated conductance and load test based electronic battery tester
US6466026B1 (en) 2001-10-12 2002-10-15 Keith S. Champlin Programmable current exciter for measuring AC immittance of cells and batteries
US6466025B1 (en) 2000-01-13 2002-10-15 Midtronics, Inc. Alternator tester
US6469511B1 (en) 2001-07-18 2002-10-22 Midtronics, Inc. Battery clamp with embedded environment sensor
US6544078B2 (en) 2001-07-18 2003-04-08 Midtronics, Inc. Battery clamp with integrated current sensor
US6566883B1 (en) 1999-11-01 2003-05-20 Midtronics, Inc. Electronic battery tester
US6586941B2 (en) 2000-03-27 2003-07-01 Midtronics, Inc. Battery tester with databus
US6633165B2 (en) 1997-11-03 2003-10-14 Midtronics, Inc. In-vehicle battery monitor
US6696819B2 (en) 2002-01-08 2004-02-24 Midtronics, Inc. Battery charge control device
US6737831B2 (en) 1999-09-01 2004-05-18 Keith S. Champlin Method and apparatus using a circuit model to evaluate cell/battery parameters
US6759849B2 (en) 2000-03-27 2004-07-06 Kevin I. Bertness Battery tester configured to receive a removable digital module
US6781382B2 (en) 2002-12-05 2004-08-24 Midtronics, Inc. Electronic battery tester
US6788025B2 (en) 2001-06-22 2004-09-07 Midtronics, Inc. Battery charger with booster pack
US6795782B2 (en) 1999-04-08 2004-09-21 Midtronics, Inc. Battery test module
US7688074B2 (en) 1997-11-03 2010-03-30 Midtronics, Inc. Energy management system for automotive vehicle
US7706991B2 (en) 1996-07-29 2010-04-27 Midtronics, Inc. Alternator tester
US7705602B2 (en) 1997-11-03 2010-04-27 Midtronics, Inc. Automotive vehicle electrical system diagnostic device
US7710119B2 (en) 2004-12-09 2010-05-04 Midtronics, Inc. Battery tester that calculates its own reference values
US7723993B2 (en) 2002-09-05 2010-05-25 Midtronics, Inc. Electronic battery tester configured to predict a load test result based on open circuit voltage, temperature, cranking size rating, and a dynamic parameter
US7728597B2 (en) 2000-03-27 2010-06-01 Midtronics, Inc. Electronic battery tester with databus
US7772850B2 (en) 2004-07-12 2010-08-10 Midtronics, Inc. Wireless battery tester with information encryption means
US7774151B2 (en) 1997-11-03 2010-08-10 Midtronics, Inc. Wireless battery monitor
US7777612B2 (en) 2004-04-13 2010-08-17 Midtronics, Inc. Theft prevention device for automotive vehicle service centers
US7791348B2 (en) 2007-02-27 2010-09-07 Midtronics, Inc. Battery tester with promotion feature to promote use of the battery tester by providing the user with codes having redeemable value
US7808375B2 (en) 2007-04-16 2010-10-05 Midtronics, Inc. Battery run down indicator
US7977914B2 (en) 2003-10-08 2011-07-12 Midtronics, Inc. Battery maintenance tool with probe light
US7999505B2 (en) 1997-11-03 2011-08-16 Midtronics, Inc. In-vehicle battery monitor
US8164343B2 (en) 2003-09-05 2012-04-24 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US8198900B2 (en) 1996-07-29 2012-06-12 Midtronics, Inc. Automotive battery charging system tester
US8203345B2 (en) 2007-12-06 2012-06-19 Midtronics, Inc. Storage battery and battery tester
US8237448B2 (en) 2000-03-27 2012-08-07 Midtronics, Inc. Battery testers with secondary functionality
US8306690B2 (en) 2007-07-17 2012-11-06 Midtronics, Inc. Battery tester for electric vehicle
US8344685B2 (en) 2004-08-20 2013-01-01 Midtronics, Inc. System for automatically gathering battery information
US8436619B2 (en) 2004-08-20 2013-05-07 Midtronics, Inc. Integrated tag reader and environment sensor
US8442877B2 (en) 2004-08-20 2013-05-14 Midtronics, Inc. Simplification of inventory management
US8513949B2 (en) 2000-03-27 2013-08-20 Midtronics, Inc. Electronic battery tester or charger with databus connection
US8674711B2 (en) 2003-09-05 2014-03-18 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US8738309B2 (en) 2010-09-30 2014-05-27 Midtronics, Inc. Battery pack maintenance for electric vehicles
US8872517B2 (en) 1996-07-29 2014-10-28 Midtronics, Inc. Electronic battery tester with battery age input
US8958998B2 (en) 1997-11-03 2015-02-17 Midtronics, Inc. Electronic battery tester with network communication
US9018958B2 (en) 2003-09-05 2015-04-28 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US9201120B2 (en) 2010-08-12 2015-12-01 Midtronics, Inc. Electronic battery tester for testing storage battery
US9229062B2 (en) 2010-05-27 2016-01-05 Midtronics, Inc. Electronic storage battery diagnostic system
US9244100B2 (en) 2013-03-15 2016-01-26 Midtronics, Inc. Current clamp with jaw closure detection
US9255955B2 (en) 2003-09-05 2016-02-09 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US9274157B2 (en) 2007-07-17 2016-03-01 Midtronics, Inc. Battery tester for electric vehicle
US9312575B2 (en) 2013-05-16 2016-04-12 Midtronics, Inc. Battery testing system and method
US9419311B2 (en) 2010-06-18 2016-08-16 Midtronics, Inc. Battery maintenance device with thermal buffer
US9425487B2 (en) 2010-03-03 2016-08-23 Midtronics, Inc. Monitor for front terminal batteries
US9588185B2 (en) 2010-02-25 2017-03-07 Keith S. Champlin Method and apparatus for detecting cell deterioration in an electrochemical cell or battery
US11566972B2 (en) 2019-07-31 2023-01-31 Midtronics, Inc. Tire tread gauge using visual indicator

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US6002238A (en) * 1998-09-11 1999-12-14 Champlin; Keith S. Method and apparatus for measuring complex impedance of cells and batteries
DE102010032280A1 (de) * 2010-03-30 2011-10-06 Continental Automotive Gmbh Energiesystem bzw. Bordnetz mit Messeinheit sowie Messeinheit zur Messung der Impedanz eines Energiespeichers im Energiesystem bzw. Bordnetz
US10046649B2 (en) 2012-06-28 2018-08-14 Midtronics, Inc. Hybrid and electric vehicle battery pack maintenance device
DE112011101892T5 (de) 2010-06-03 2013-03-21 Midtronics, Inc. Akku-Satz-Wartung für elektrische Fahrzeuge
US11740294B2 (en) 2010-06-03 2023-08-29 Midtronics, Inc. High use battery pack maintenance
US10429449B2 (en) 2011-11-10 2019-10-01 Midtronics, Inc. Battery pack tester
US11325479B2 (en) 2012-06-28 2022-05-10 Midtronics, Inc. Hybrid and electric vehicle battery maintenance device
US9851411B2 (en) 2012-06-28 2017-12-26 Keith S. Champlin Suppressing HF cable oscillations during dynamic measurements of cells and batteries
US10843574B2 (en) 2013-12-12 2020-11-24 Midtronics, Inc. Calibration and programming of in-vehicle battery sensors
US10473555B2 (en) 2014-07-14 2019-11-12 Midtronics, Inc. Automotive maintenance system
US10222397B2 (en) 2014-09-26 2019-03-05 Midtronics, Inc. Cable connector for electronic battery tester
WO2016123075A1 (fr) 2015-01-26 2016-08-04 Midtronics, Inc. Dispositif d'essai d'un alternateur
US9966676B2 (en) 2015-09-28 2018-05-08 Midtronics, Inc. Kelvin connector adapter for storage battery
US10014700B2 (en) * 2016-02-04 2018-07-03 Johnson Controls Technology Company Integrated battery safety interlock
US10608353B2 (en) 2016-06-28 2020-03-31 Midtronics, Inc. Battery clamp
US11054480B2 (en) 2016-10-25 2021-07-06 Midtronics, Inc. Electrical load for electronic battery tester and electronic battery tester including such electrical load
DE102017221248A1 (de) 2017-11-28 2019-05-29 Audi Ag Verfahren zur Bestimmung eines aktuellen Ladezustandswerts einer Batterie, Batterieanordnung und Kraftfahrzeug
US11513160B2 (en) 2018-11-29 2022-11-29 Midtronics, Inc. Vehicle battery maintenance device
US11545839B2 (en) 2019-11-05 2023-01-03 Midtronics, Inc. System for charging a series of connected batteries
US11668779B2 (en) 2019-11-11 2023-06-06 Midtronics, Inc. Hybrid and electric vehicle battery pack maintenance device
US11474153B2 (en) 2019-11-12 2022-10-18 Midtronics, Inc. Battery pack maintenance system
US11486930B2 (en) 2020-01-23 2022-11-01 Midtronics, Inc. Electronic battery tester with battery clamp storage holsters

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DE3811371A1 (de) * 1988-04-05 1989-10-19 Habra Elektronik Verfahren zum laden und gleichzeitigen pruefen des zustandes eines nickelcadmium-akkumulators
FR2685780B1 (fr) * 1991-12-27 1996-06-14 Alsthom Cge Alcatel Procede de mesure de l'etat de charge d'un generateur electro-chimique et dispositif mettant en óoeuvre ce procede.
US5416403A (en) * 1993-02-11 1995-05-16 Hewlett-Packard Corporation Current stabilizing circuit
FR2721715B1 (fr) * 1994-06-24 1996-08-23 Alsthom Cge Alcatel Dispositif de mesure de l'état de charge d'un générateur électrochimique.
US5598098A (en) * 1994-08-11 1997-01-28 Champlin; Keith S. Electronic battery tester with very high noise immunity

Cited By (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6445158B1 (en) 1996-07-29 2002-09-03 Midtronics, Inc. Vehicle electrical system tester with encoded output
US7940052B2 (en) 1996-07-29 2011-05-10 Midtronics, Inc. Electronic battery test based upon battery requirements
US8198900B2 (en) 1996-07-29 2012-06-12 Midtronics, Inc. Automotive battery charging system tester
US8872517B2 (en) 1996-07-29 2014-10-28 Midtronics, Inc. Electronic battery tester with battery age input
US7706991B2 (en) 1996-07-29 2010-04-27 Midtronics, Inc. Alternator tester
US7656162B2 (en) 1996-07-29 2010-02-02 Midtronics Inc. Electronic battery tester with vehicle type input
US6329793B1 (en) 1996-07-29 2001-12-11 Midtronics, Inc. Method and apparatus for charging a battery
US6332113B1 (en) 1996-10-07 2001-12-18 Midtronics, Inc. Electronic battery tester
US6392414B2 (en) 1997-01-13 2002-05-21 Midtronics, Inc. Electronic battery tester
US8674654B2 (en) 1997-11-03 2014-03-18 Midtronics, Inc. In-vehicle battery monitor
US6331762B1 (en) 1997-11-03 2001-12-18 Midtronics, Inc. Energy management system for automotive vehicle
US7999505B2 (en) 1997-11-03 2011-08-16 Midtronics, Inc. In-vehicle battery monitor
US6633165B2 (en) 1997-11-03 2003-10-14 Midtronics, Inc. In-vehicle battery monitor
US8493022B2 (en) 1997-11-03 2013-07-23 Midtronics, Inc. Automotive vehicle electrical system diagnostic device
US7705602B2 (en) 1997-11-03 2010-04-27 Midtronics, Inc. Automotive vehicle electrical system diagnostic device
US7774151B2 (en) 1997-11-03 2010-08-10 Midtronics, Inc. Wireless battery monitor
US6313608B1 (en) 1997-11-03 2001-11-06 Midtronics, Inc. Method and apparatus for charging a battery
US8958998B2 (en) 1997-11-03 2015-02-17 Midtronics, Inc. Electronic battery tester with network communication
US7688074B2 (en) 1997-11-03 2010-03-30 Midtronics, Inc. Energy management system for automotive vehicle
US6424158B2 (en) 1998-07-27 2002-07-23 Midtronics, Inc. Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries
US6294896B1 (en) 1998-09-11 2001-09-25 Keith S. Champlin Method and apparatus for measuring complex self-immitance of a general electrical element
US6323650B1 (en) 1999-04-08 2001-11-27 Midtronics, Inc. Electronic battery tester
US6806716B2 (en) 1999-04-08 2004-10-19 Kevin I. Bertness Electronic battery tester
US6795782B2 (en) 1999-04-08 2004-09-21 Midtronics, Inc. Battery test module
US6707303B2 (en) 1999-04-08 2004-03-16 Midtronics, Inc. Electronic battery tester
US6456045B1 (en) 1999-04-16 2002-09-24 Midtronics, Inc. Integrated conductance and load test based electronic battery tester
US6351102B1 (en) 1999-04-16 2002-02-26 Midtronics, Inc. Automotive battery charging system tester
US6359441B1 (en) 1999-04-30 2002-03-19 Midtronics, Inc. Electronic battery tester
US6556019B2 (en) 1999-04-30 2003-04-29 Midtronics, Inc. Electronic battery tester
US6316914B1 (en) 1999-05-05 2001-11-13 Midtronics, Inc. Testing parallel strings of storage batteries
US6441585B1 (en) 1999-06-16 2002-08-27 Midtronics, Inc. Apparatus and method for testing rechargeable energy storage batteries
US6294897B1 (en) 1999-09-01 2001-09-25 Keith S. Champlin Method and apparatus for electronically evaluating the internal temperature of an electrochemical cell or battery
US6737831B2 (en) 1999-09-01 2004-05-18 Keith S. Champlin Method and apparatus using a circuit model to evaluate cell/battery parameters
US6313607B1 (en) 1999-09-01 2001-11-06 Keith S. Champlin Method and apparatus for evaluating stored charge in an electrochemical cell or battery
US6495990B2 (en) 1999-09-01 2002-12-17 Keith S. Champlin Method and apparatus for evaluating stored charge in an electrochemical cell or battery
US6566883B1 (en) 1999-11-01 2003-05-20 Midtronics, Inc. Electronic battery tester
US8754653B2 (en) 1999-11-01 2014-06-17 Midtronics, Inc. Electronic battery tester
US6363303B1 (en) 1999-11-01 2002-03-26 Midtronics, Inc. Alternator diagnostic system
US6466025B1 (en) 2000-01-13 2002-10-15 Midtronics, Inc. Alternator tester
US6225808B1 (en) 2000-02-25 2001-05-01 Midtronics, Inc. Test counter for electronic battery tester
US6759849B2 (en) 2000-03-27 2004-07-06 Kevin I. Bertness Battery tester configured to receive a removable digital module
US9052366B2 (en) 2000-03-27 2015-06-09 Midtronics, Inc. Battery testers with secondary functionality
US8513949B2 (en) 2000-03-27 2013-08-20 Midtronics, Inc. Electronic battery tester or charger with databus connection
US7728597B2 (en) 2000-03-27 2010-06-01 Midtronics, Inc. Electronic battery tester with databus
US6586941B2 (en) 2000-03-27 2003-07-01 Midtronics, Inc. Battery tester with databus
US8237448B2 (en) 2000-03-27 2012-08-07 Midtronics, Inc. Battery testers with secondary functionality
US8872516B2 (en) 2000-03-27 2014-10-28 Midtronics, Inc. Electronic battery tester mounted in a vehicle
US7924015B2 (en) 2000-03-27 2011-04-12 Midtronics, Inc. Automotive vehicle battery test system
US6304087B1 (en) 2000-09-05 2001-10-16 Midtronics, Inc. Apparatus for calibrating electronic battery tester
US6417669B1 (en) 2001-06-11 2002-07-09 Keith S. Champlin Suppressing interference in AC measurements of cells, batteries and other electrical elements
US6788025B2 (en) 2001-06-22 2004-09-07 Midtronics, Inc. Battery charger with booster pack
US6469511B1 (en) 2001-07-18 2002-10-22 Midtronics, Inc. Battery clamp with embedded environment sensor
US6544078B2 (en) 2001-07-18 2003-04-08 Midtronics, Inc. Battery clamp with integrated current sensor
US6466026B1 (en) 2001-10-12 2002-10-15 Keith S. Champlin Programmable current exciter for measuring AC immittance of cells and batteries
US6621272B2 (en) 2001-10-12 2003-09-16 Keith S. Champlin Programmable current exciter for measuring AC immittance of cells and batteries
US6696819B2 (en) 2002-01-08 2004-02-24 Midtronics, Inc. Battery charge control device
US7723993B2 (en) 2002-09-05 2010-05-25 Midtronics, Inc. Electronic battery tester configured to predict a load test result based on open circuit voltage, temperature, cranking size rating, and a dynamic parameter
US6781382B2 (en) 2002-12-05 2004-08-24 Midtronics, Inc. Electronic battery tester
US8164343B2 (en) 2003-09-05 2012-04-24 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US9255955B2 (en) 2003-09-05 2016-02-09 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US8674711B2 (en) 2003-09-05 2014-03-18 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US9018958B2 (en) 2003-09-05 2015-04-28 Midtronics, Inc. Method and apparatus for measuring a parameter of a vehicle electrical system
US7977914B2 (en) 2003-10-08 2011-07-12 Midtronics, Inc. Battery maintenance tool with probe light
US7777612B2 (en) 2004-04-13 2010-08-17 Midtronics, Inc. Theft prevention device for automotive vehicle service centers
US7772850B2 (en) 2004-07-12 2010-08-10 Midtronics, Inc. Wireless battery tester with information encryption means
US8442877B2 (en) 2004-08-20 2013-05-14 Midtronics, Inc. Simplification of inventory management
US8436619B2 (en) 2004-08-20 2013-05-07 Midtronics, Inc. Integrated tag reader and environment sensor
US8704483B2 (en) 2004-08-20 2014-04-22 Midtronics, Inc. System for automatically gathering battery information
US8344685B2 (en) 2004-08-20 2013-01-01 Midtronics, Inc. System for automatically gathering battery information
US8963550B2 (en) 2004-08-20 2015-02-24 Midtronics, Inc. System for automatically gathering battery information
US7710119B2 (en) 2004-12-09 2010-05-04 Midtronics, Inc. Battery tester that calculates its own reference values
US7791348B2 (en) 2007-02-27 2010-09-07 Midtronics, Inc. Battery tester with promotion feature to promote use of the battery tester by providing the user with codes having redeemable value
US7940053B2 (en) 2007-02-27 2011-05-10 Midtronics, Inc. Battery tester with promotion feature
US7808375B2 (en) 2007-04-16 2010-10-05 Midtronics, Inc. Battery run down indicator
US9335362B2 (en) 2007-07-17 2016-05-10 Midtronics, Inc. Battery tester for electric vehicle
US8306690B2 (en) 2007-07-17 2012-11-06 Midtronics, Inc. Battery tester for electric vehicle
US9274157B2 (en) 2007-07-17 2016-03-01 Midtronics, Inc. Battery tester for electric vehicle
US8203345B2 (en) 2007-12-06 2012-06-19 Midtronics, Inc. Storage battery and battery tester
US9588185B2 (en) 2010-02-25 2017-03-07 Keith S. Champlin Method and apparatus for detecting cell deterioration in an electrochemical cell or battery
US9425487B2 (en) 2010-03-03 2016-08-23 Midtronics, Inc. Monitor for front terminal batteries
US9229062B2 (en) 2010-05-27 2016-01-05 Midtronics, Inc. Electronic storage battery diagnostic system
US9419311B2 (en) 2010-06-18 2016-08-16 Midtronics, Inc. Battery maintenance device with thermal buffer
US9201120B2 (en) 2010-08-12 2015-12-01 Midtronics, Inc. Electronic battery tester for testing storage battery
US8738309B2 (en) 2010-09-30 2014-05-27 Midtronics, Inc. Battery pack maintenance for electric vehicles
US9244100B2 (en) 2013-03-15 2016-01-26 Midtronics, Inc. Current clamp with jaw closure detection
US9312575B2 (en) 2013-05-16 2016-04-12 Midtronics, Inc. Battery testing system and method
US11566972B2 (en) 2019-07-31 2023-01-31 Midtronics, Inc. Tire tread gauge using visual indicator

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