Fluke BT521 battery analyzer
The Fluke BT521 is a battery analyzer for professional testing of batteries and battery banks. It is used to measure values that indicate the actual condition of the battery – including internal battery/strap resistance, DC and AC voltage, DC and AC current with the included i410 clamp, as well as ripple voltage, frequency, and temperature with the BTL21 probe.
It is particularly useful when assessing whether a battery is performing as expected without having to dismantle it or rely on guesswork. With saved sequence measurements and profiles, you can work more systematically and compare measurements over time. This makes it well-suited for environments where many batteries must be monitored according to fixed routines.
The BT521 is supplied as a kit with the BTL21 Intelligent Test Probe set, which features an infrared temperature sensor, and the i410 AC/DC current clamp. The instrument is rated to IEC 61010-2-033 CAT III 600 V and may be used with up to 1000 V DC between any terminal and ground.
Additionally, data can be downloaded wirelessly via the Fluke Battery Analyzer app, allowing measurements to be easily saved and shared for documentation and service work.
Typical applications
- Testing and troubleshooting of batteries and battery banks
- Routine measurements where results must be saved as sequences or profiles
- Tasks where temperature, current, voltage, and internal resistance must be evaluated together
Specifications
- Manufacturer: FLUKE
- MPN: 4489996
- Model: BT521
- Measures internal battery/strap resistance
- Measures DC and AC voltage
- Measures DC and AC current with i410 clamp
- Measures ripple voltage, frequency, and temperature with BTL21 probe
- Includes BTL21 Intelligent Test Probe set with infrared temperature sensor
- Includes i410 AC/DC current clamp
- IEC 61010-2-033 CAT III 600 V
- Max. 1000 V DC between any terminal and ground
- Stores sequence measurements and profiles
- Wireless data transfer via Fluke Battery Analyzer mobile app
- Dimensions: 220 mm x 103 mm x 58 mm
- Weight: 850 g
- Screen size: 77.00 mm x 56.50 mm
- IP rating: IEC 60529 IP40
- Power supply: BP500 smart battery pack, 7.4 V, 3000 mAh
- Battery life: >8 hours under continuous full load
- Charging time: ≤4 hours
- Operating temperature: 0 °C to 40 °C
- Storage temperature: -20 °C to 50 °C
- GTIN/EAN: not provided in verified data
- See manufacturer's datasheet
- See manufacturer's product video
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