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Ultra-High Precision Battery Testing System
HPS Series
Ultra-high-precision cycling and characterization for coin, cylindrical and pouch cells from 100 µA to 5 A — 10 ppm voltage measurement precision, 24-bit measurement and 24-bit control, and six auto-switching current ranges. Available as a standard benchtop chassis, or with an independently controlled temperature chamber for each channel.
10 ppm
Voltage measurement precision
100 µA – 5 A
Per channel, across six auto-switching ranges
± 0.005%
Current control accuracy
10 – 60 °C
Integrated chamber option, ±0.5 °C control stability
Accuracy you can audit
Measurement accuracy held across all voltage and current ranges, with precision published as a separate specification.
Independently verified
Designed and manufactured under an ISO 9001:2015-certified quality system, supported by an ISO/IEC 17025-accredited testing and calibration laboratory.
35 years of instrumentation
Founded 1991. Arbin reinvests 30% of profits into R&D, funding the precision architecture provided with every Arbin test station.
Built for any lab
Scalable channel density in a compact, air-cooled footprint, with open Python and C# API for the automation you already run.
Highlights of the HPS Series
Four hardware decisions that separate the HPS from a conventional cycler, and what each one changes about the data you create.
10 ppm Precision
Measurement and control
Degradation shows up months earlier
Voltage measurement precision reaches 10 ppm (±0.001% FSR, 120 µV) with 20 ppm accuracy; current measurement reaches 20 ppm with 40 ppm accuracy. Four separate figures, published separately, so nothing hides inside a blended number.
Coulombic efficiency and dQ/dV resolve real changes rather than the noise floor.
6 Current Ranges
auto-selecting, every channel
Nanoamps and full-rate cycling on one channel
Ranges run from 5 A down to 100 µA and select automatically, including during constant-voltage control. On the lowest range, measurement precision is 4 nA, so a self-discharge current is measured on a 100 µA scale rather than a 5 A one.
The rated specification follows the range in use, not just full scale.
Potentiostat Per Channel
Full potentiostat and galvanostat control
Electrochemical work on a benchtop chassis
Every channel functions as an independent potentiostat and galvanostat with an embedded microcontroller for real-time calculations, plus a second voltage input and a PT100 input mapped to that channel. EIS runs to 100 kHz through Gamry integration or Arbin's DCIM technique.
GITT, PITT and voltammetry run without a separate bench instrument, and one stalled cell never stops the rest.
A Chamber Per Channel
integrated option, isolated zones
Two temperatures, two cells, one chassis
The all-in-one option adds a temperature chamber inside the chassis, controlling 10 °C to 60 °C to ±0.5 °C stability and adding only three inches of height. Cells load on interchangeable trays, and PT100 sensing per channel can drive step-level safety logic.
No walk-in chamber, no floor space, no facility infrastructure — a single-phase outlet runs either configuration.
The value behind 10 ppm
Identify the strongest candidate before the capacity curves separate
Two cells can hold nearly the same capacity through early cycling while a small parasitic reaction is already draining more charge from one of them. Measuring that difference directly — instead of waiting for it to show up as fade — is what lets a lab rank materials, electrolytes, additives and coatings before long-duration testing is finished.
Discover trends earlier for better-supported decision
In this illustrative example, a difference of one hundredth of a percentage point in coulombic efficiency is barely visible on an ordinary scale, but it's enough to justify prioritizing one candidate for the next round of testing.
Reveal performance
Resolve small parasitic losses, charge-endpoint slippage, dQ/dV movement and low-current behavior well before meaningful capacity fade is visible.
Rank samples
Compare electrolyte formulations, additives, coatings, active materials, voltage windows and charge strategies inside one controlled screening program.
Advance testing
Commit long-duration validation resources to the strongest candidates, shortening the path from screening to a better-supported development decision.
Charts are illustrative. Early high-precision measurements support comparative ranking under tightly controlled, repeatable conditions; they do not replace long-duration validation or independently guarantee service life.
Two Ways to Configure the Same System
One channel module, one set of measurement specifications. The only decision is whether temperature control belongs inside the chassis or in a chamber you already own.
Standard Benchtop
The measurement chassis on its own, at 16 × 17 × 13 in. Cells sit in external holders, in an MZTC, or in a chamber you already own and control through MITS. The only route to a four-channel chassis.
- Channels per chassis
- 2 or 4
- Voltage range
- −6 to 6 V
- Current ranges per channel
- Six, 100 µA to 5 A
- Chassis size (W × D × H)
- 16 × 17 × 13 in
- System weight
- 50 lb (2 ch) · 60 lb (4 ch)
- Temperature control
- External chamber via MTCI, or MZTC
Best when you need four channels in one chassis, when the lab already has thermal control, or when cells move between fixtures between tests.
With Integrated Chambers
The same channel module with one independently controlled chamber for each of its two channels, three inches taller overall. Cells load on removable trays with dual rotary locks, a pressure relief valve and a stainless-steel chamber interior.
- Channels per chassis
- 2
- Chambers
- 2 — one per channel
- Chamber temperature
- 10 to 60 °C at ±0.5 °C
- Chassis size (W × D × H)
- 16 × 17 × 16 in
- System weight
- 60 lb
- Cells per chamber
- 1 cell per tray
Best when two cells need two different temperatures at once, when thermal cross-interference would confound the result, or when a turnkey system has to arrive ready to run.
Applications and Test Methods
Each channel operates as an independent potentiostat and galvanostat, so one chassis covers electrochemical characterization and long-run cycling at the same time.
Coulombic efficiency and dQ/dV
Detect degradation signatures early in the test life cycle. Ten-ppm voltage precision and 4 nA current precision on the lowest range resolve the small differences that separate one formulation, electrolyte or coating from the next.
Cell R&D and characterization
Resolve the small signals that separate one formulation from the next. Six current ranges per channel cover milliamp characterization and full-rate cycling without moving the cell.
Impedance and electrochemical analysis
Every channel acts as an independent potentiostat/galvanostat. Native DCIM plus integrated Gamry EIS to 100 kHz put cycling and impedance in one time-aligned dataset.
Automated and adaptive testing
Drive the tester from your own software. ArbinCTI over TCP/IP plus Lua scripting support BMS emulation, digital twins, and adaptive fast-charge strategies.
Supported Test Methods
Electrochemical
- GITT — galvanostatic intermittent titration
- PITT — potentiostatic intermittent titration
- Cyclic and linear sweep voltammetry
- Chrono-amperometry and potentiometry
- EIS to 100 kHz
- Symmetric-cell testing
- Multi-electrode and reference-electrode work
Cycling and lifetime
- Battery life cycle testing
- dQ/dV analysis
- High-precision coulombic efficiency
- Self-discharge current measurement
- DCIR and pulse characterization
- Real-world drive-cycle simulation
- High-speed pulse testing
Production and QC
- Incoming quality control
- Cell-level grading and sorting
- Formation and cell finishing
- End-of-line testing
- Fast-charge optimization
Voltage, Current, and Channel Ranges
One channel module, six current ranges, one voltage range. Ranges switch automatically, including during constant-voltage control, and the rated specification follows the range in use.
| Voltage Range | Current Ranges per Channel | Channels — Standard Benchtop | Channels — With Integrated Chambers |
|---|---|---|---|
| −6 to 6 V | 5 A · 1 A · 100 mA · 10 mA · 1 mA · 100 µA | 2 or 4 | 2 |
| Current Range | Measurement precision ±0.002% FSR · 20 ppm |
Measurement accuracy ±0.004% FSR · 40 ppm |
Control precision ±0.004% FSR |
Control accuracy ±0.005% FSR |
|---|---|---|---|---|
| 5 A | 200 µA | 400 µA | 400 µA | 500 µA |
| 1 A | 40 µA | 80 µA | 80 µA | 100 µA |
| 100 mA | 4 µA | 8 µA | 8 µA | 10 µA |
| 10 mA | 400 nA | 800 nA | 800 nA | 1 µA |
| 1 mA | 40 nA | 80 nA | 80 nA | 100 nA |
| 100 µA | 4 nA | 8 nA | 8 nA | 10 nA |
Battery Trays & Holders
With the integrated chamber, cells load on an interchangeable tray that carries the channel, second-voltage and PT100 connections in one insertion. Trays are specified at order time.
| Tray | Cell format | Max current per cell | Cells per tray | Connection | Cell size |
|---|---|---|---|---|---|
| Coin cell tray | Coin | 5 A | 2 | 2-point parallel | Ø10–30 mm · height ≤7 mm |
| Cylindrical cell tray | Cylindrical | 16 A | 2 | 4-point Kelvin | Ø18–26 mm · length 55–75 mm |
| Universal tray | Universal · pouch and prismatic | 10 A | 2 | 4-point Kelvin | Effective space 4 × 6.5 × 2.7 in |
Coin Cell Tray
Cylindrical Cell Tray
Universal Tray
Comparing systems?
Four hardware parameters decide whether test data is suitable to draw a conclusion from. Here is where the HPS lands on each, and the question worth putting to every vendor on your shortlist.
| Parameter | Why it decides your data | HPS Series | Ask any vendor |
|---|---|---|---|
| Resolution | The smallest change the circuitry can detect. Too coarse and a resistance spike near end of life, or a dip in coulombic efficiency, simply is not in your data. | 24-bitMeasurement and control alike. 1 part in 16,777,216, with a DAC as fine as the ADC. | How many bits on the ADC, and on the DAC? Control resolution is usually coarser and rarely published. |
| Precision | The noise floor. Noise obscures exactly the features dQ/dV and high-precision coulombic efficiency exist to reveal. | ±0.001% FSR10 ppm on voltage, 120 µV. ±0.002% FSR on current, specified separately for voltage, current, and time. | Is precision a hardware specification, or derived from averaged calculations and slow logging that hide the noise? |
| Accuracy | Whether the number is right, not merely repeatable. A tester can be precisely wrong all day. | ±0.002% FSR20 ppm on voltage, ±0.004% FSR on current. Published as its own figure, never merged with precision. | Can you give accuracy and precision as two separate numbers? |
| Current ranges per channel | A single range means a nanoamp self-discharge current is measured on a 5 A scale, and the error scales with it. | SixAuto-switching from 5 A down to 100 µA, during CV control as well as between steps. 4 nA measurement precision on the lowest range. | How many ranges, how low does the lowest go, and do they switch during CV control or only between steps? |
Software and Safety
The two questions a lab asks after the specifications check out: can my team actually drive it, and what happens when a cell misbehaves.
MITS Software
MITS scales from basic charge–discharge cycling to complex protocols with nested conditions. Most tests can be built through the menu-driven interface, while Lua scripting and ArbinCTI are available for advanced automation and external control
- ✓ 30+ programmable control types, 90+ meta variables, and up to 9 nested loops
- ✓Up to 127 reusable sub-schedules, so a validated procedure gets called rather than rebuilt
- ✓Adaptive logging raises acquisition rate during transients and state transitions
- ✓DataWatcher queries the SQL database directly — filter by channel, barcode, or cycle count, overlay up to 9 plots
- ✓PostgreSQL, Microsoft SQL Server, and Apache Kafka streaming
- ✓ArbinCTI TCP/IP API plus Lua scripting for BMS emulation and adaptive control
Safety Architecture
Protection is distributed across channel hardware, an independent controller, and step-level software limits. Critical safeguards remain active independently of the test sequence.
- ✓Independent safety monitoring checks voltage, current, and temperature limits without relying on the test control loop
- ✓Hardware E-Stop with all-pole disconnection, plus a dry-contact circuit for facility-wide remote trip
- ✓Hardware voltage clamps on high-current modules; protective fuses in every I/V channel board
- ✓Test Object profiles auto-set thresholds from the cell spec and block a test on reverse polarity
- ✓Behavioral checks flag abnormal rates, voltage excursions, and capacity anomalies
- ✓Tri-color light tower, audible alarms, thermoswitches, variable-speed ventilation
Auxiliaries and Optional Accessories Available to Enhance Testing
Thermal and Environmental
- MZTC - 8 independently controlled mini-chambers, 10°C to 60°C at 20°C ambient
- Holders for coin, cylindrical, pouch, and custom cell formats; up to 8 cells per chamber
- Seamlessly communicate and control third-party temperature chambers in real-time
- Synchronized multi-channel test logic; temperature-driven step control and automated standby modes
- Chamber temperature and humidity logged alongside electrical measurements for complete test traceability
Electrochemical Impedance Spectroscopy
- Integrated Gamry EIS multiplexed across Arbin test channels; eliminates dedicated instruments
- DCIM — Fast DC impedance measurement in under 1 second; enhances standard cycling workflows
- Up to 4 independent Gamry systems enable parallel EIS across many channels simultaneously
- Frequency range: 10 µHz to 100 kHz; full impedance characterization to 10 kHz
- EIS data time-aligned with voltage, current, and temperature for seamless test integration
Auxiliaries
- Temperature sensing — real-time thermal monitoring for chambers and cell surfaces
- Auxiliary voltage inputs — monitor individual cell voltages or reference electrodes within packs
- Analog & Digital I/O — control external devices like pumps, fans, valves, and safety interlocks
- CAN Bus interface — direct communication with Battery Management Systems
- SMBus interface — read and write smart battery registers during testing
- Uninterruptible Power Supply (UPS) — detect power loss and safely pause or resume tests
Holders & Fixtures
- Custom-engineered holders for coin, cylindrical, pouch, and application-specific cell formats
- Support high-current test configurations; flexible contact design accommodates diverse cell geometries
- Modular rack systems enable scalable test density and simplified reconfiguration across channels
Evaluated Side by Side Against Other Testers
“We did side-by-side comparisons of Arbin and other tester technology. Armed with this data, we moved forward with confidence using Arbin for what is critical to our electrification future [EV].”
“With Arbin, you can see minute changes in the battery and this gives researchers better predictability of when the end of life will occur in a reduced amount of time.”
“High precision measurements are not the only answer to understanding battery life, but it is a key component. Sandia National Lab brings their expertise in metrology and precision measurements and has helped Arbin as they’ve designed the new series of testers.”
R&D 100 Award — high-precision tester development
Through a three-year ARPA-E project funded by the U.S. Department of Energy, Arbin worked with Ford Motor Company, Sandia National Laboratories to develop high-precision battery testing at currents up to 200 A. The resulting architecture was subsequently extended across lower-current applications and now underpins the LBTS-Cell platform.
of battery test instrumentation, founded 1991
certified quality management system
accredited electrical calibration laboratory
certified by TÜV Rheinland for the US and Canada, plus CE Declaration of Conformity
Tell us what you're testing
Share your cell format, voltage and current requirements, channel count, and test objectives. An Arbin sales engineer will recommend the appropriate system configuration and supporting options.
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