A space-saving, multichannel measurement module
Safely conduct charge/discharge testing of increasingly high-voltage batteries


Key Features

  • For 600 V or lower battery packs
  • 30ch, voltage and temperature (thermocouple) measurement
  • High-precision measurement of cell voltage
  • Ideal for standalone battery cell testing and semiconductor burn-in testing

Model No. (Order Code)

The M7102 cannot perform measurement by itself. A separately sold Data Logger LR8101 or LR8102 is required.
Thermocouple is not provided by Hioki, and must be purchased from a separate supplier.

Ideal for Capturing Data from High-Voltage Battery Pack Cells


Need a solution for use in battery cell inspections or multi-point measurement in an application like semiconductor burn-in testing? Look no further.

The M7102 measurement module features exceptional space efficiency and the ability to measure up to 30 channels of voltage and temperature data.

Up to 10 measurement modules can be connected to a single data logger, allowing the number of channels to be increased to 300 ch.
A JIS and EIA-standard 19-inch rack can accommodate one logger and six measurement modules for a total of 180 channels per shelf.
Furthermore, if up to 10 of the LR8102 advanced models are connected with optical cabling, their sampling can be synchronized, allowing the number of measurement channels to be increased to a maximum of 3000 ch.

It’s ideal for use in multi-point voltage and temperature measurement applications like inspections during battery cell formation processes and semiconductor burn-in testing.


Assuring safety when testing cell voltages of a 600 V battery pack: Achievement unlocked.

Terminal-to-ground voltage: 600 V DC (CAT II) Insulation
EN IEC 61010 Safety standard-compliant

Although the voltage of individual cells in a battery may be low at about 4 V, safely measuring the voltage at each cell of an 400 V battery pack, a type that is already being commercialized, requires an instrument with a maximum rated terminal-to-ground voltage of at least 400 V DC.
Since the M7102 has a maximum rated terminal-to-ground voltage of 600 V, it can accommodate testing of 400 V batteries with an ample margin of safety.

High Speed

Lightning-fast sampling. Fine-grained voltage fluctuation data.

Sampling rate of the M7102
- When using 1 channel to 30 channels: Up to 20 ms
- When using 1 channel to 15 channels: Up to 10 ms

The M7102 can record variations in cell voltage and temperature during charge/discharge testing of vehicle battery packs.

Measurement Performance

Measure battery cell voltage with confidence

Leakage current flow to the data logger can be minimized since measurement modules are engineered with a signal input resistance of 100 MΩ or greater.
Furthermore, the module provides a 6 V range for lithium-ion batteries and a 2 V range for fuel cells, and measures cell voltage with a high degree of precision thanks to its 18-bit A/D resolution.

General Specifications

Accuracy guaranteed: 1 year
Compatible models Data Logger LR8101: Standard model
Data Logger LR8102: Advanced model
Operating temperature and humidity range −10°C to 50°C (14°F to 122°F), 80% RH or less (non-condensing)
Withstand voltage 3.6 kV AC for 1 minute (sensitivity current 1 mA)
Between input channels (+, −) and LR8101/LR8102, between modules 350 V AC for 1 minute (sensitivity current 1 mA) between input channels (+, −)
Number of input channels 30 channels
Input terminal Push-button type terminal block (2 terminals per channel), equipped with terminal block cover
Measurement parameters Voltage
Temperature (Thermocouple: K, J, E, T, N, R, S, B, C)
Input method Scan method using semiconductor relays, floating unbalanced input
All channels isolated
A/D resolution 18 bits
Maximum input voltage ±100 V DC
Maximum voltage between the channels 300 V DC
Maximum rated line-to-ground voltage 600 V AC, DC in measurement category II, anticipated transient overvoltage 4000 V
Maximum rated voltage between the modules 600 V AC, DC
Input resistance 100 MΩ or more ( voltage 10 mV f.s. to 6 V f.s. range, 1-5 V f.s. range, thermocouple all ranges)
1 MΩ ±5% (voltage 10 V f.s. to 100 V f.s. range)
Data refresh interval 10 ms (*1), 20 ms (*2), 50 ms, 100 ms, 200 ms, 500 ms, 1 s, 2 s, 5 s, 10 s
Measurement range Voltage: 10 mV f.s., 20 mV f.s., 100 mV f.s., 200 mV f.s., 1 V f.s., 2 V f.s., 6 V f.s., 10 V f.s., 20 V f.s., 60 V f.s., 100 V f.s., 1-5 V f.s.
Thermocouples: 100℃ f.s., 500℃ f.s., 2000℃ f.s.
Dimensions and weight Approx. 53W × 166H × 263D mm (2.1W × 6.5H × 10.4D in.), Approx. 1.2 kg (2.6 lbs)
Included accessory Instruction Manual ×1
  • *1:Can be selected when thermocouple wire break detection is set to OFF and the number of channels being used is 1 to 15.
  • *2:Can be selected when thermocouple wire break detection is set to OFF, or when thermocouple wire break detection is set to ON and the number of channels being used is 1 to 15.

Thermocouple for temperature measurement (0)

For reference only. Thermocouple is not provided by Hioki. Please purchase from separate suppliers.

Related Products