Get fast, accurate Ampere hour (Ah) capacity results for the most common lead acid battery types—in just seconds.
The ACT 612 Intelligent Battery Tester is purpose-built for testing 6V and 12V standby SLA, cyclic GEL, and automotive FLOODED batteries. Easy to use and highly accurate, the ACT 612 simulates a full 20-hour (C20) discharge test in seconds, displaying both DC voltage and the actual Ah capacity available.
Dual-Voltage Testing for Lead Acid Batteries
Using the Ah Calibration Control, select the appropriate battery type—standby SLA, cyclic GEL, or car FLOODED—before testing. The ACT 612 supports 6V batteries from 1.2Ah to 10Ah and 12V batteries from 1.2Ah up to 100Ah.
Simple, Automatic Operation
Once securely connected to clean battery terminals, the ACT 612 automatically measures and displays the available DC voltage followed by the Ah capacity. Results are delivered within seconds, with no complicated setup required.
Clear Recharge or Replace Indication
Battery manufacturers recommend recharging or replacing a battery when its rated Ah capacity drops below 65%. By providing a clear and precise Ah capacity reading, the ACT 612 allows users to quickly identify batteries that need attention. A quick reference lookup table highlights common battery sizes and their recommended recharge or replacement thresholds.
Unique Ah Calibration Control
This exclusive feature allows the tester to be calibrated for different lead acid battery technologies or even specific battery brands, ensuring consistent and reliable results.
Advanced Pulse Load Technology
The ACT 612 employs advanced pulse load technology to assess Ah capacity based on the battery’s temperature and state of charge. This approach is significantly more accurate than traditional voltage or internal resistance measurements and, unlike conventional load testers, does not deplete the battery.
Key Features
Simulates a full 20-hour (C20) discharge test in seconds
Designed for standby SLA, cyclic GEL, and car FLOODED batteries
Tests 6V batteries from 1.2Ah–10Ah and 12V batteries from 1.2Ah–100Ah
Displays DC voltage and actual available Ah capacity
Powered directly by the battery under test, with ultra-low heat generation for continuous testing
Simple, intuitive operation with no user interpretation required
Trusted by engineers across industries including security, telecommunications, and mobility