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Battery Tester, Lead Acid, Li-Ion, NiCd, NiMH, 6V to 1000V, 22 cm, 10.3 cm, 5.8 cm, 500 Series


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Manufacturer Part No:
Newark Part No.:
Product Range
500 Series
Technical Datasheet:
FLUKE-BT521   Datasheet
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Lead Acid, Li-Ion, NiCd, NiMH

6V to 1000V




500 Series

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Technical Docs (6)

CAD Downloads


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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
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Product Overview

The FLUKE-BT521 is a Battery Analyser for stationary battery systems. It offers reduced testing complexity, a simplified workflow and an intuitive user interface provide a new level of ease-of-use in battery testing. It is ideal test tool for maintenance, troubleshooting and performance testing of individual stationary batteries and battery banks used in critical battery back-up applications. It covers a broad range of battery test functions ranging from DC voltage and resistance tests to full condition testing using automated string function testing and the test probe integrated infra-red temperature measurement system. It allows to quickly and easily defining upper and lower measurement thresholds or tolerance ranges. During the testing process, measured values are automatically compared to the predefined threshold levels producing a PASS, FAIL or WARN indication after each measurement.
  • Intelligent test probes with long and short extenders
  • Built-in LCD display
  • Speaker for visual and audio feedback
  • Integrated infrared temperature sensor
  • During the internal resistance test, it also measure the voltage of the battery under test
  • Discharge volts
  • Ripple voltage test
  • Meter and sequence modes
  • Inter-cell strap resistance test and data management
  • Auto hold
  • Auto save
  • Fluke battery management software
  • Comprehensive logging
  • Optimized user interface - Quick, guided setup ensures capturing the right data every time
  • 7.4V 3000mAh lithium-ion battery for more than 8hrs continuous operation - Battery life
  • USB port - For fast data download to supplied data analysis & report management application software
  • Highest safety rating in the industry
  • Wireless capability works with Fluke battery analyse mobile app (Fluke BA Mobile)
  • Designed for measurements on stationary batteries of all types


Test & Measurement, Industrial Maintenance, Electrical, Safety, Facility Maintenance, Maintenance & Repair


Battery analyzer, 4-wire test pin (set), BTL10 Basic Test Lead (set), TL175 TwistGuard™ Test Leads with adaptor, 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, Zero Ohm Calibration Resistor

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