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Specifications subject to change without notice.

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Battery Analyser

Fluke BT521

Battery Analyser

Battery testing made simple, intuitive and efficient. 

The Fluke BT521 Battery Analyser is the ideal tool for maintenance, troubleshooting, and performance testing of individual stationary batteries and battery banks used in critical back-up applications.

  • Key measurements include internal battery resistance, dc and ac voltage, dc and ac current, ripple voltage, frequency, and temperature

  • Sequence measurement mode allows for automatic or manual sequence testing of battery strings with automatic measurement storage without requiring a button press to save each time

  • Comprehensive logging automatically captures all measured values for on-the-go analysis

  • Intuitive user interface, compact design, and rugged construction for optimum performance, test results, and reliability

Download Datasheet
Download Datasheet
Battery resistance¹
3 mΩ
1% + 8
30 mΩ
0.8% + 6
300 mΩ
0.8% + 6
3000 mΩ
0.8% + 6
V DC
6 V
0.09% + 5
60 V
0.09% + 5
600 V
0.09% + 5
1000 V
0.09% + 5
V AC (45 Hz to 500 Hz with 800 Hz filter)
600 V
2% + 10
Frequency (displayed with Vac and Aac)²
500 Hz
0.5% + 8
AC voltage ripple (20 KHz Max)
600 mV
3% + 20
6000 mV
3% + 10
A DC/A AC (with accessory Fluke i410)
400 A
3.5% + 2
Temperature
0°C to 60°C
2°C
Meter mode
999 records for each measurement position with time stamp
Sequence mode
Up to 100 profiles and 100 profile templates (Each profile stores up to 450 batteries) with time stamp
¹ Based on AC injection method with a source signal of <100 mA, 1 kHz.
² Trigger level V AC: 10 mV, A AC: 10 A
Battery Analyser

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