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Fluke 500 Series Battery Analyzers

Fluke BT521 Battery Analyzer
Fluke BT521 Battery Analyzer
Fluke BT521 Battery Analyzer with Intelligent Test Probe
Fluke BTL21 Intelligent Test Probe

Reduced testing complexity, a simplified workflow and an intuitive user interface provide a new level of ease-of-use in battery testing.

The Fluke 500 Series Battery Analyzer is ideal test tool for maintenance, troubleshooting and performance testing of individual stationary batteries and battery banks used in critical battery back-up applications. The intuitive user interface, compact design and rugged construction ensure optimum performance, test results and reliability. Fluke 500 Series Battery Analyzers cover a broad range of battery test functions ranging from DC voltage and resistance tests to full condition testing using an automated string function testing and the test probe integrated infra-red temperature measurement system. 500 Series Battery Analyzers are designed for measurements on stationary batteries of all types.

  • Key measurements: Battery resistance, dc and ac voltage, dc and ac current, ripple voltage, frequency and battery temperature.
  • Sequence measurement mode: Automatic or manual sequence testing of battery strings with automatic measurement storage including voltage, resistance and temperature (with BTL21 intelligent test probe).
  • Comprehensive logging: All measured values are automatically captured during testing and can be reviewed on the instrument before downloading for on the-go analysis.
  • Optimized user interface: Quick, guided setup ensures you're capturing the right data every time, and the combined visual and audio feedback cues reduce the risk of measurement confusion.
  • Threshold comparison: Configure multiple reference values and thresholds for resistance and voltage. Comparison result feedback after each measurement via visual and verbal cues.
  • Ergonomic test leads: Rugged coaxial two pole kelvin test pins with remote SAVE button reduce test time and increase efficiency.
  • Test probe extenders: Long reach probes for double stacked cells.
  • Intelligent test probe set (BT520 and BT521): Integrated LCD display, infrared temperature measurement (BT521 only), flashlight, verbal audio feedback and captures voltage readings and temperature logging automatically or via integrated save button.
  • Enhanced data analysis: Quickly compare trends, analyze results and create reports with included battery management software.
  • Easy reporting: Generate PDF report on the PC software with analysis graphics and data table or quick email format report with csv file on the mobile app.
  • Wireless communication: For data download and remote display while measuring. Browse and email measurement data via iOS app.
  • Battery life: 7.4 V 3000 mAh lithium-ion battery for more than eight hours continuous operation.
  • USB port: For fast data download to supplied data analysis and report management application software.
  • Highest safety rating in the industry: CAT III 600 V, 1000 V dc max. rated for safe measurements all around the battery power supply equipment.
Functions Range Resolution Accuracy BT508 BT510 BT520 BT5213
Battery resistance1 3 mΩ 0.001 mΩ 1% + 8
30 mΩ 0.01 mΩ 0.8% + 6
300 mΩ 0.1 mΩ 0.8% + 6
3000 mΩ 1 mΩ 0.8% + 6
Vdc 6 V 0.001 v 0.09% + 5
60 V 0.01 v 0.09% + 5
600 V 0.1 v 0.09% + 5
1000 v 1V 0.09% + 5      
Vac (45 Hz to 500 Hz with 800 Hz filter) 600 v 0.1 v 2% + 10  
Frequency (displayed with Vac and Aac)2 500 Hz 0.1 Hz 0.5% + 8  
AC voltage ripple (20KHz Max) 600 mV 0.1 mV 3% + 20  
6000 mV 1 mV 3% + 10  
Adc/Aac (with accessory Fluke i410) 400 A 1 A 3.5% + 2      
Temperature 0°C to 60°C 1°C 2°C (4 °F)      
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 The measurement is based on ac injection method. The injected source signal is < 100 mA, 1 kHz.
2 Trigger level VAC: 10 mV, Aac: 10 A
3 Not available in all regions

Measurement Modes BT508 BT510 BT520 BT521
Resistance (mΩ)
Battery voltage
Voltage dc
Voltage ac and frequency (Hz)  
Ripple volt  
Temperature of negative battery post      
DC and ac current (and frequency)      
DMM mode  
Sequence mode  
Discharge measurement mode  
Automatic measurement save  
Wireless commumcation      
Memory view  

General Specifications
Size (HxWxD) 22 cm x 10.3 cm x 5.8 cm (9 in x 4 in x 2 in)
Weight 850 g (1.9 lb)
Screen dimensions 7.7 cm x 5.6 cm (3 in x 2.2 in)
Interface USB mini

Environment Specifications
Operating temperature 0°C to 40°C
Storage temperature -20°C to 50°C
Lithium-ion battery charging temperature 0°C to 40°C
Operating humidity Non-condensing (10°C)
<=80% RH (at 10°C to 30°C)
<=75% RH (at 30°C to 40°C)
Operating altitude Sea level to 2000 meters
Storage altitude Sea level to 12,000 meters
IP rating IP40
Radio FCC Class A
Vibration requirements MIL-PRF-28800F: Class 2
Drop test requirements 1 meter
Temperature coefficients Add 0.1 x specified accuracy for each degree C above 28°C or below 18°C
Safety compliance 600 V CAT III
EMC IEC 61326
ROHS China, Europe
Protection class 2 Pollution Degree II
Battery compliance UN38.3
UL2054
IEC62133
2G per IEC68-2-26, 25G, and 29
Model NameDescription
Fluke BT508

Fluke BT508 Battery Analyzer
Includes
:

  • Battery analyzer
  • 4-wire test pin (set)
  • BTL10 Basic Test Lead (set)
  • TL175 TwistGuard™ Test Leads with adapter
  • BP500 lithium-ion battery
  • BC500 AC charger
  • Mini-USB cable
  • Shoulder strap
  • Belt strap
  • Magnetic hanging strap
  • FlukeView® Battery Management Software
  • Soft carrying case
  • Spare fuses (2)
Fluke BT510

Fluke BT510 Battery Analyzer
Includes
:

  • Battery analyzer
  • 4-wire test pin (set)
  • BTL10 Basic Test Lead (set)
  • TL175 TwistGuard™ Test Leads with adapter
  • BP500 lithium-ion battery
  • BC500 AC charger
  • Mini-USB cable
  • Shoulder strap
  • Belt strap
  • Magnetic hanging strap
  • FlukeView® Battery Management Software
  • Soft carrying case
  • Spare fuses (2)
Fluke BT520

Fluke BT520 Battery Analyzer
Includes:

  • Battery analyzer
  • 4-wire test pin (set)
  • BTL10 Basic Test Lead (set)
  • TL175 TwistGuard™ Test Leads with adapter
  • L300 Attachable LED Flashlight (2)
  • BTL20 Intelligent Test Probe Set, with extender (no temperature sensor)
  • BP500 lithium-ion battery
  • BC500 AC charger
  • mini-USB cable
  • Shoulder strap
  • Belt strap
  • Magnetic hanging strap
  • FlukeView® Battery Management Software
  • Soft carrying case
  • Spare fuses (2)
  • Battery tags
Fluke BT521

Fluke BT521 Advanced Battery Analyzer
Includes:

  • Battery analyzer
  • 4-wire test pin (set)
  • BTL10 Basic Test Lead (set)
  • TL175 TwistGuard™ Test Leads with adapter
  • L300 Attachable LED Flashlight (2)
  • BTL21 Intelligent Test Probe Set, with extender and temperature sensor
  • i410 AC/DC Current Clamp
  • BP500 lithium-ion battery
  • BC500 AC charger
  • Mini-USB cable
  • Shoulder strap
  • Belt strap
  • Magnetic hanging strap
  • FlukeView® Battery Management Software
  • Soft carrying case
  • Spare fuses (2)
  • Battery tags

Test Probes
Fluke BTL20Interactive Battery Analyzer Test Probe
Fluke BTL21Interactive Battery Analyzer Test Probe with Temperature Sensor

Batteries, Chargers and Adapters
Fluke BC500AC Power Charger
Fluke BP500Lithium-ion Battery 3000 mAh
Fluke BTL-AVoltage/Current Probe Adapter

Cases and Holsters
Fluke C500LSoft Carrying Case (Large)
Fluke C500SSoft Carrying Case (Small)

Current Clamps
Fluke i410AC/DC Current Clamp

Lights
Fluke L300LED Flashlight

Test Leads
Fluke BTL10Basic Battery Analyzer Test Leads
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