The Fiizreal PBRM-1 is a battery tester that measures voltage up to ±110 V DC and resistance up to 100 Ω. For resistance measurements, it uses a 1 kHz signal and four-wire Kelvin clamps. Measurements are shown on a 2.8-inch color TFT display.
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Measurement ranges and accuracy
The tester measures DC voltage from −110 to +110 V and resistance from 0 to 100 Ω. Its stated measurement accuracy is ±0.5%, but the available information does not specify the conditions for that figure or which ranges it applies to. Both automatic and manual measurement modes are available.
The voltage range allows the tester to be used with various batteries and power sources. Resistance measurements can also be used to compare the internal resistance of batteries, for example when checking several cells. Internal resistance alone, however, is not enough to determine a battery’s overall condition or capacity.
Four-wire measurement and display
The PBRM-1 measures resistance using a 1 kHz AC signal and a four-wire connection with Kelvin clamps. Separating the current and voltage leads helps reduce the effect of lead and contact resistance on the result. This is particularly useful when measuring low resistances, although correct clamp connection remains important.
Measurements and settings appear on the 2.8-inch color TFT HD display, which is also used to control the device.
Calibration and battery sorting
The tester has a calibration function that can be used to help maintain measurement accuracy. Follow the device manual when performing calibration.
Sorting mode lets users set thresholds and classify tested batteries according to their chosen criteria. This can make it easier to separate a larger number of cells by hand after checking them. The tester does not physically sort the batteries.
Package contents, power and dimensions
The package includes the tester, four-wire Kelvin clamps and a user manual. The clamp cable is 0.8 m long.
A built-in 1,200 mAh battery powers the device and charges via USB-C at 5 V/1 A. The tester measures 135 × 80 × 24 mm and weighs 160 g, making it portable between workstations.
Before measuring, especially at higher voltages, check the correct procedure and limits in the manual, use suitable measurement accessories and avoid touching exposed live conductors.
The Fiizreal PBRM-1 is intended for technicians and enthusiasts who need to measure battery voltage and resistance. Its four-wire measurement and adjustable thresholds are particularly useful when comparing multiple cells.
