G. Jost electronic · Battery testing technology since 1986
Battery Testers, Battery Monitoring and Battery Management for Stationary Battery Systems
For 40 years, we have been developing and manufacturing battery testing technology and battery monitoring systems for professional users — from mobile on-site measurement and continuous monitoring to central evaluation and documentation in CS-Manager. Thousands of users around the world rely on our advanced testing equipment.
- Since 1986: in-house development and manufacturing for professional battery testing.
- For: UPS, industrial and safety batteries in stationary battery systems.
- Workflow: on-site measurement, central data management, evaluation and documentation in CS-Manager.
- Software: CS-Manager is available free of charge and can be used as a central database solution.
Solutions for Professional Battery Systems
Mobile battery tester
TMC-2001RTS Battery Tester
Mobile battery tester for standardized test procedures, precise internal resistance diagnostics and professional on-site battery maintenance. The TMC-2001RTS measures voltage, Rel and Rct, guides the user through the test workflow and transfers measured data to CS-Manager for evaluation.
- Measurement of block voltage, Rel and Rct
- Guided test workflow directly on the instrument
- Limit monitoring during measurement
- Connection to CS-Manager for evaluation and documentation
More diagnostics
More diagnostic information than a classic 1000 Hz measurement
The TMC-2001RTS detects not only ohmic changes. With its additional Rct diagnostics, it also makes electrochemical abnormalities visible. Batteries are electrochemical systems — their diagnostics should therefore also reveal electrochemical changes.
Rel
Evaluates the electrical, ohmic component of internal resistance.
Rct
Adds electrochemical abnormalities of the battery block to the diagnostic picture.
CS-Manager: Central Battery Management Software
CS-Manager combines data management, maintenance route planning, measurement analysis and maintenance documentation in one central software solution. Sites, systems, measurement series, limits, routes and reports can be managed as a single-workstation solution or as a server-based solution for multiple users.
Manage data centrally
Structure sites, battery systems, measurement series and limits clearly.
Prepare maintenance routes
Prepare battery definitions and test tasks and transfer them to the TMC-2001RTS.
Evaluate measured values
Import, analyze and document measurement data and use it for reports.
Preview: CS-4001/127
Available from August 2026: the newly developed successor to the proven CS-4001 battery scanner — fully integrated into the CS-Manager software.
Accessories for Mobile Use
Matching accessories support work with the TMC-2001RTS in different operating environments — from areas without radio communication to secure attachment and robust Kelvin measurement.
TMC-IRCOM
For areas where wireless communication is not permitted or not desired, the TMC-IRCOM external infrared adapter enables data communication without radio transmission.
TMC Protector
A practical protective cover for the TMC-2001RTS with strong magnets for secure hold on metallic surfaces. Openings at the corners allow flexible attachment of a carrying strap.
90° Test Probes
Right-angle and straight Kelvin test probes are available. They are robust, equipped with easily replaceable Kelvin contacts and complement Kelvin clamps as well as straight Kelvin test probes.
Note: The connector plugs fit only our mobile RTS battery testers.
Service, Updates and Information
Information about firmware updates and retrofitting is available for existing RTS users. Downloads, product information and contact options are also available directly on the website.
RTS in use?
Information about firmware updates and retrofitting is available on the RTS update page.
Downloads
Datasheets, manuals and further product information are collected in the download area.
Contact and consultation
For questions about battery testers, software, accessories and suitable workflows, please use the contact page.
Plan, Measure and Document Battery Maintenance in a Structured Way
Our products are intended for qualified electrical professionals and commercial customers. No sales to the USA or Canada.