The Hioki M7100 Voltage/Temperature Module can measure voltage and temperature across 15 channels at a sampling rate of 10 ms. If no more than 8 channels are used, it can make measurements at a sampling rate of up to 5 ms. Easy expandability ensures readiness for evaluating future high-voltage systems that have even more battery cells. Up to 10 measurement modules can be connected to a single data logger, allowing the number of channels to be increased to 150 channels.

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.