Alber Cellcorder CRT-300 Handheld Cell Voltage & Resistance Tester Kit

The Alber Cellcorder CRT-300 (by Vertiv / Emerson) is a portable handheld battery testing system designed for routine maintenance, commissioning, and internal resistance evaluation of stationary battery systems. Built for critical infrastructure environments—such as data center UPS facilities, telecom power plants, and electrical utility substations—the CRT-300 measures individual cell voltage, internal cell resistance, intercell connection (strap) resistance, and overall string voltage while battery systems remain online.

Utilizing a true DC load test methodology, the Alber Cellcorder CRT-300 provides consistent, repeatable readings that correlate directly to battery capacity degradation, making it an essential tool for identifying weak cells before power interruptions occur.

Technical Overview & Key Capabilities

IEEE-Compliant DC Load Testing

Unlike AC-based battery meters that can suffer from signal distortion caused by electrical ripple and high-frequency noise from active UPS inverters, the Alber Cellcorder CRT-300 applies a momentary DC load test. By drawing a controlled DC current pulse from each cell, the analyzer calculates true internal resistance in accordance with IEEE 1188 (for VRLA batteries), IEEE 450 (for flooded lead-acid batteries), and IEEE 1106 (for NiCad cells).

Automated Cell & Strap Measurement

• Multi-Parameter Capture: Measures cell voltage, internal cell resistance, and intercell connection resistance in a single automated test pass.

• Auto-Sensing Probe Functionality: Contact-triggered measurement allows technicians to move rapidly along battery racks without manually pressing buttons for every cell.

• High Intercell Resolution: Pinpoints loose hardware, lug corrosion, or poor connection resistance across battery interconnect straps in micro-ohms ($\mu\Omega$).

Data Management & Reporting Software

The Alber Cellcorder CRT-300 logs multi-string testing data into internal memory, which can be downloaded to a PC via serial/USB connection. Paired with Alber Battery Analysis Software (BAS), technicians can track baseline drift over time, plot internal resistance degradation curves, and generate pass/warning/fail reports for NERC PRC-005 compliance audits.

Real-World Applications

• Data Center UPS Maintenance: Perform quarterly internal resistance and voltage checks on 2V, 6V, and 12V VRLA or flooded battery strings.

• Telecommunications DC Plants: Evaluate -48V central office power banks and remote cell site backup batteries under live operating conditions.

• Electric Utility & Substation Backup: Test stationary batteries powering protective relays, circuit breakers, and switchgear control loops.

• Industrial Emergency Power Systems: Baseline new battery installations during commissioning to verify manufacturer specifications.

Technical Comparison: Alber CRT-300 vs. Alternative Battery Testers

Field technicians comparing handheld battery resistance meters often evaluate the Alber CRT-300 against instruments like the Fluke BT510 and Hioki BT3554.

Practical Comparison Insights:

1. DC Load Stability vs. AC Ripple: Active UPS systems generate AC ripple voltage that can skew readings on 1 kHz AC impedance meters. The CRT-300’s DC load methodology bypasses high-frequency inverter noise to provide stable, repeatable resistance values.

2. Direct Intercell Resistance: The CRT-300 captures micro-ohm resistance across intercell connection straps alongside internal cell resistance, detecting high-resistance connections before they become thermal hazard risks.

3. Traceable Utility Auditing: Designed around utility and data center standards, data exported from the CRT-300 integrates directly into formal NERC PRC-005 maintenance records.

Specifications

• Model: Cellcorder Alber Cellcorder CRT-300

• Cell Voltage Range: 0.000 V DC to 16.000 V DC

• Resistance Measurement Range: 0 to 100,000 $\mu\Omega$ (Micro-ohms)

• Resistance Resolution: 1 $\mu\Omega$

• String Voltage Range: Up to 600 V DC

• Test Method: Momentary DC Load Test

• Display: Backlit Graphic LCD Screen

• Data Storage: Memory capacity for multiple battery strings

• Communications Interface: Serial RS-232 / USB port

• Power Supply: Rechargeable internal battery pack / AC power adapter

• Enclosure: Impact-resistant field case with protective holster

What’s in the Box

• 1x Alber Cellcorder CRT-300 Handheld Unit

• 1x Set of Dual-Pin Resistance Test Probes and Leads

• 1x AC Charger / Power Adapter

• 1x USB/Serial PC Interface Cable

• 1x Heavy-Duty Hard Carrying Case with Custom Foam Inserts

• User Operating Manual