Alber Cellcorder CRT-400 Cell Resistance Tester
The Alber Cellcorder CRT-400 is a portable handheld tester for the online testing of stationary batteries including the large battery banks that back up data centers, telecom sites, and power plants. It measures cell voltage internal cell resistance, and intercell connection resistance in a single pass giving maintenance teams an early warning of weak cells and loose or corroded connections before they cause a failure. Alber is now part of Vertiv.
Key Features
- IEEE-compliant testing: designed to follow IEEE standards for testing batteries online
- Complete cell measurements: float voltage, internal cell resistance, and intercell connection resistance
- Wide measurement range: works on individual 1 V cells up to 16 V modules including single cells and multi cell units
- Patented Albér DC resistance test method: eliminates distorting ripple from the charger and gives very high repeatability
- Online testing: test batteries while they stay on float with no need to take the system offline
- Stored test data: records and displays results on the unit with an audible signal when each measurement is complete
- Easy data transfer: wireless (IrDA) or USB transfer to a PC for analysis and reports
- Peripheral compatibility: IrDA communication supports accessories such as the DMA-35-CRT hydrometer
- Trending and analysis software: included to track battery health over time and produce compliance reports
- Simple operation: easy keyboard entry on a handheld unit
- Complete kit: supplied with a hard shell carrying case, AC charger, software, and a user manual
Typical Applications
- Data center and UPS battery maintenance
- Telecom and power utility battery banks
- Power generation and substation battery systems
- Nuclear, oil and gas, and petrochemical standby batteries
- Compliance record keeping and warranty verification
- Troubleshooting and identifying failing cells
Why Choose It
Regular internal resistance testing is one of the best ways to predict battery failure and the Alber Cellcorder CRT-400 makes it fast and repeatable on live battery banks. Trending results over time lets you replace cells at the right moment improving availability and avoiding costly emergency outages.





