Battery Cycler & Charge Discharge Tester - +/-0.05%

Name: Battery Charge/Discharge Test Systems
Brand: VoltTest
Availability: InStock

Battery Cycler

Precision Charge/Discharge Testing for Every Cell Chemistry

The VT-CDS series is VoltTest's flagship battery cycler family. Each channel runs independently with CC, CV, CP and CR modes, making it the ideal battery testing equipment for cycle life studies, rate capability tests, calendar aging and battery modelling.

✓ Independent channels: 8 / 16 / 32 per 19-inch rack
✓ Voltage ranges 0–5 V, 0–10 V, 0–60 V, 0–200 V
✓ Current from 1 mA to 300 A per channel
✓ ±0.05% FS accuracy, 1 ms data logging
✓ Regenerative discharge: ≥90% energy recovery

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Models & Specifications

VT-CDS Series Model Overview

Model	Voltage Range	Current Range	Channels / Rack	Accuracy	Best For
VT-CDS-5V10A	0–5 V	0.1 mA–10 A	32	±0.05% FS	18650 / 21700 cell R&D
VT-CDS-5V30A	0–5 V	0.1 mA–30 A	16	±0.05% FS	Prismatic & pouch cells
VT-CDS-5V60A	0–5 V	0.1 mA–60 A	16	±0.05% FS	High-rate power cells
VT-CDS-60V50A	0–60 V	0.1 mA–50 A	8	±0.05% FS	NiMH & lead-acid batteries
VT-CDS-200V100A	0–200 V	0.5 A–100 A	4	±0.1% FS	High-voltage cell strings
VT-CDS-1000V300A	0–1000 V	1 A–300 A	1	±0.1% FS	Module / mini-pack cycling

Custom voltage and current ranges available through our OEM/ODM battery test solutions program.

Key Features

Engineered for the Battery Laboratory

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High Accuracy

16-bit ADC, four-wire Kelvin sensing and calibrated references deliver ±0.05% FS voltage and current accuracy.

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Fast Sampling

1 ms data logging captures voltage, current, power and internal resistance dynamics during pulse testing.

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Energy Recovery

Regenerative discharge feeds ≥90% of energy back to the grid, reducing heat and operating cost.

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VoltTest Studio

Graphical test programming, cycle statistics, database export, and MES/ERP integration for traceable data.

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Multi-Channel

Up to 32 independent channels per rack, expandable to hundreds of channels in one test bench.

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Safety Interlocks

Over-voltage, over-current, over-temperature protection and alarm chain per channel.

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BMS Interfaces

CAN, RS-485 and Ethernet communication for battery management system testing.

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24/7 Duty

Industrial-grade power stages with forced-air cooling designed for continuous production use.

Applications

Where Battery Cyclers Are Used

Our charge/discharge test systems serve battery laboratories and production quality departments across the industry.

✓ Battery R&D laboratories — cycle life, rate capability, aging studies
✓ Lithium battery testing for NMC, LFP, LTO, Na-ion and solid-state chemistries
✓ University and research institute electrochemistry labs
✓ Incoming inspection and QC at battery manufacturers
✓ Battery pack / EV component suppliers performing cell validation

Specification Assistance

Not sure which model fits your cell format? Tell us your chemistry and test plan.

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Free application consultation · 24-hour response

FAQ

Frequently Asked Questions

What is a battery cycler?

A battery cycler (also called a charge/discharge test system) is a precision instrument that repeatedly charges and discharges a battery cell between defined voltage and current limits to measure capacity, cycle life, internal resistance changes and performance degradation over time. It is the core instrument in any battery testing laboratory.

What accuracy do I need for cell testing?

For R&D and cell qualification, ±0.05% FS (full-scale) accuracy on both voltage and current is the industry standard for reliable cycle life data. For production QC, ±0.1% FS is typically sufficient. VoltTest VT-CDS series cyclers deliver ±0.05% FS using 16-bit ADCs and four-wire Kelvin sensing.

How many channels should I plan for?

For R&D: 8–16 channels is typical for parallel testing of multiple cell variants. For production incoming inspection: 32–128 channels depending on throughput targets. For formation and grading: 256–1024 channels per system. Each VoltTest rack holds 8–32 independent channels and systems are expandable.

Can I test solid-state batteries with this system?

Yes. VoltTest cyclers support all lithium-based chemistries including NMC, LFP, LTO, sodium-ion and solid-state cells. The key requirement is matching the voltage range (solid-state cells may have different cutoff voltages) and current requirements to the appropriate VT-CDS model. Our engineers can recommend the right configuration for your chemistry.

What software is included with the battery cycler?

Every VT-CDS system includes VoltTest Studio software for graphical test programming, real-time monitoring, cycle statistics, data export (CSV/SQL) and MES/ERP integration. The software supports custom test protocols, automatic grading criteria and multi-channel batch control.

How does regenerative discharge work?

During discharge, instead of dissipating energy as heat in a resistor, the regenerative circuit converts the battery's discharge energy back into AC power and feeds it to the grid. VoltTest cyclers recover ≥90% of discharge energy, reducing both heat load and electricity cost by up to 60% in high-throughput labs.