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Fluke BT520 Battery Analyser

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£3,358.80 £2,799.00
Lead Time: 1-2 Weeks Free UK Delivery* Delivery Options

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The BT520 is an improved version of Fluke's BT510 battery analyser which comes with additional functionality and additional accessories.

Made for use with stationary and battery backup systems of all types, the BT520 allows the user to see what's happening inside a battery and can test voltage, resistance and ripple voltage with a high degree of accuracy. By using the included intelligent test probe a sequence measurement mode can also be used for automatic or manual sequence testing of battery strings.

This Fluke battery analyser is the first model in the series to come with the intelligent test probe, an accessory that includes its own integrated LCD display, built-in torch, verbal audio feedback and even has an integrated save button for quick and easy storage to the analyser's memory.

When testing, the BT520 makes configuring testing procedures significantly easier by guiding the user through how to configure the test. It also includes around 999 record internal memory and is fully downloadable to PC for further interaction with testing data using Fluke's included software package.

Fluke BT520 Battery Analyser Key Features

  • Suitable for use in testing stationary batteries and battery backup systems of all types
  • Tests resistance, battery voltage (AC/DC), ripple voltage and frequency
  • Comprehensive logging - the BT510 automatically captures data and stores it in its memory
  • Optimised user interface with guided setup and audio/visual feedback cues
  • Use the included battery logging software to analyse results and create reports
  • Powered by rechargeable batteries
  • USB port for download to PC
  • CAT III 600V rated
  • Sequence measurement mode using the included intelligent test probe
  • Threshold comparison - configure multiple reference values and thresholds for resistance and voltage

What's Included?

  • Fluke BT520 Battery Analyser
  • 4-Wire Test Pin (Set)
  • BTL10 Basic Test lead (Set)
  • TL175 TwistGuard Test Leads with Adapter
  • 2x L300 Attachable LED Torches
  • BTL20 Intelligent Test Probe Set with Extender
  • Lithium Ion Battery
  • AC Charger
  • Mini USB Cable
  • Shoulder Strap
  • Belt Strap
  • Magnetic Hanging Strap
  • FlukeView Battery Management Software
  • Soft Carrying Case
  • 2 x Spare Fuses
  • 100 x Paper Battery Tags
Accessories related to this product:
Part Code4489981

Fluke BT500 Series Technical Specifications

Functions Range Resolution Accuracy BT510 BT520 BT521
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


Measurement Modes 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
2G per IEC68-2-26, 25G, and 29
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