HIGH POWER BATTERY CYCLE TESTER
1250W high power with software for remote control
- Input/Output Voltage
5V to 60V - Input/Output current
20A to 250A - Input/Output power
200W to 1250W - Supports 0V input
EFFICIENT FEATURES FOR SIMPLE EVALUATIONS OF HIGH POWER BATTERIES
CDPU series is a battery cycle tester that enables 200 W to 1250 W high power charge and discharge by one unit. Liquid crystal 5-digit meter that enables correct setting and reading of I/O voltage and current values, dedicated software* that collectively controls charge-discharge operation and various measurements, and battery temperature detection function by thermistor can simplify the single cell evaluation test for the high-capacity batteries for HEV, PHV, EV, and PEV whose demand is especially growing in recent years. Even if multiple cells are connected in series, the data of charge and discharge to/from each cell, voltage, current, and temperature data for each cell can be obtained (up to 250 V). This series is optimum for charge-discharge evaluation test for various rechargeable batteries such as lithium-ion batteries, fuel cells, nickel hydride batteries, and lead batteries, and electric double layer capacitors.
* Up to two channels are supported. The software that supports more channels is also available. For details, contact the sales representative.
FEATURES AND BENEFITS
- Up to 1250 W high power charge and discharge are enabled by only one unit
- Battery temperature measurement by thermistor
- High-accuracy charge-discharge control
- Charge-discharge tests for various batteries are widely supported
- High-resolution D/A and A/D converters are mounted
- Regularly equipped with digital interface
- Low noise switching system is optimum for research and development
- Use in various combinations such as multiply connection and master/slave is available
APPLICATIONS
- Various batteries charge/discharge cycle testing
Models
Model | I/O Voltage | I/O Current | I/O Power |
---|---|---|---|
CDPU5-40 | 0 to 5 V | 0 to 40 A | 200 W |
CDPU5-50 | 0 to 50 A | 250 W | |
CDPU5-100 | 0 to 100 A | 500 W | |
CDPU5-200 | 0 to 200 A | 1000 W | |
CDPU5-250 | 0 to 250 A | 1250 W | |
CDPU20-30 | 0 to 20 V | 0 to 30 A | 600 W |
CDPU30-40 | 0 to 30 V | 0 to 40 A | 1200 W |
CDPU60-20 | 0 to 60 V | 0 to 20 A | 1200 W |
Model | I/O Voltage | I/O Current | I/O Power |
---|---|---|---|
CDPU5-5* | 0 to 5 V | 0 to 5 A | 25 W |
Functions
Three charge modes
Constant current/constant voltage (CC/CV) charge
By setting both of current value and voltage value, the output exceeds the value you set can be disabled.

Constant current (CC) charge
The charge is carried out at the current value you set. Even if the terminal voltage changes during charge, a constant current can be passed.

Constant voltage (CV) charge
The charge is carried out at the voltage value you set. Even if the charge current changes, the constant voltage can be applied.

Charge completion condition setting
Setting of time
The time can be set up to 999 hours 59 minutes 59 seconds by one-second unit. If the time reaches the setting time, the charge is completed.
Setting of voltage
Set the voltage value to complete the charge. If the terminal voltage of the battery reaches the setting value, the charge is completed (only at a constant current charge).
Setting of current
Set the current to complete the charge. If the current that is passed to the battery reaches the setting value, the charge is completed (only at a constant voltage charge).
Setting of-ΔV
For some batteries, the voltage increases when the charge is completed, and then the voltage decreases to complete the charge. The voltage reduction value at that time is measured and the charge is completed if the voltage decreases by -ΔV you set.
Setting of temperature Coming soon
When the external temperature, the discharge is completed. (External temperature protection is disabled when this setting is made.)
Three discharge modes
Constant current (CC) discharge
The discharge is carried out at the current value you set. Even if the terminal voltage changes during discharge, a constant current can be passed.

Constant power (CP) discharge
The discharge is carried out at the power value you set. If the terminal voltage changes during discharge, constant power can be consumed according to the change.

Constant resistance (CR) discharge
The discharge is carried out at the resistance value you set. The value of terminal voltage is measured and the current value for discharge is decided according to the setting value.

Discharge completion condition setting
Setting of time
The time can be set up to 999 hours 59 minutes 59 seconds by one-second unit. If the time reaches the setting time, the discharge is completed.
Setting of voltage
Set the voltage value to complete the discharge. If the terminal voltage of the battery reaches the setting value, the discharge is completed.
Setting of temperature Coming soon
When the external temperature, the discharge is completed. (External temperature protection is disabled when this setting is made.)
Battery temperature detection function
The temperature of a battery is measured by the thermistor.
If the temperature becomes abnormal, charge and discharge is stopped in an urgent manner to protect the battery.

Control function | Output ON/OFF setting | |
---|---|---|
Various status displays Output status/operation status/OVP/OCP/UVP/OPP | ||
Digital control for up to 16 units | ||
Collective control when multiple units are connected | ||
Writing function | I/O voltage setting/ I/O current setting | Percentage mode (100.00%) Voltage/current value mode (maximum rated voltage/current value) |
OVP setting/OCP setting/UVP setting | Percentage mode (100.00%) Voltage/current value mode (maximum overvoltage/overcurrent/low voltage protection value) |
|
OPP setting | Voltage/current value mode (maximum overpower protection value) | |
Constant power setting/constant resistance setting | Power value mode (maximum rated power value) Resistance value mode |
|
Reading function | I/O voltage measurement/ I/O current measurement | Percentage mode (100.00%) Voltage/current value mode (maximum rated voltage/current value) |
I/O voltage setting value / I/O current setting value | Percentage mode (100.00%) Voltage/current value mode (maximum rated voltage/current value) |
|
OVP setting/OCP setting/UVP setting | Percentage mode (100.00%) Voltage/current value mode (maximum overvoltage/overcurrent/low voltage protection value) |
|
OPP setting | Voltage/current value mode (maximum overpower protection value) |
|
Constant power measurement/constant resistance | Power value mode (maximum rated power value) Resistance value mode |
|
Constant power setting value/constant resistance setting | Power value mode (maximum rated power value) Resistance value mode |
|
External temperature measurement | Temperature value mode |
* The minimum value of each model is the same as the minimum display digit of the meter display on the front panel
Various protection functions
To protect your connected devices and this machine for a charge-discharge test, various protection functions are prepared.
OVP (overvoltage protection), OCP (overcurrent protection), UVP (low voltage protection), OPP (overpower protection), and OBP (external temperature protection)
Specifications
For details, download the datasheet below.
Accessories
- 3-core input AC cable 2.5 meters length for single phase × 1
- Instruction manual × 1
- Thermistor × 1
- Remote control software "CD-BC evaluation version" CD for install × 1
Options
- -LGmb
-
digital interface board *
- -Lgmb: digital interface board + interface cable 2 meters length
- -Lgmb(Mc0.5): digital interface board + interface cable 0.5 meters length
Enable digit control via LAN/USB/RS-232C/RS-485/GPIB as well as one control with Master/Slave.
* If this option is selected, a standard digital interface is not included with the product.Adapters for connecting digital interface board (sold separately)
To use the digital interface, you need to prepare a digital interface adapter separately. The following interface adapters are available according to the communication method of your controller port.
- CO-E32m
- Adapter for LAN
Total 16 units can be connected to one CO-E32m.
LAN cable is not provided.
- CO-U32m
- Adapter for USB
Total 16 units can be connected to one CO-U32m.
USB cable is not provided.
- CO-MET2-9
- Adapter for RS-232C (9 pin)
D-sub ⇔ Modular jack
Total 16 units can be connected to each CO-MET2-9.
- CO-MET2-25
- Adapter for RS-232C (25 pin)
D-sub ⇔ Modular jack
Total 16 units can be connected to each CO-MET2-25.
- CO-MET4-25
- Adapter for RS-485 (25 pin)
D-sub ⇔ Modular jack
Total 16 units can be connected to each CO-MET4-25.
- CO-G32m
- Adapter for GPIB
Total 16 units can be connected to one CO-G32m.
GPIB cable is not provided.
ⒶCO-M cable
two-meter cable is provided in each unit without an interface option.
If you need a longer cable, please consult with our sales staff.Master/slave
It is used to connect independent rechargeable batteries to each CDPU and perform the same control.
However, the current increase by parallel connection is not possible.* This is not a function for parallelly connected power supplies to give out average output current.
It has to hook with each same model in the same series in master/slave.
The master/slave function can only be effective with a standard digital interface.
How to Order
- When ordering, add Option No. to Model No.
-
- Example:
- CDPU5-250-LGmb
Accessory
Standard | CABLE TYPE5 | 125 V/25 A | 2.5 meters |
---|
Other
Battry cycle test software "CD-BC" (Attachment)*
CD-BC is dedicated software for remote-controlling our company's battery cycle tester. It realizes ideal power supply control when you carry out the charge-discharge tests for various rechargeable batteries such as lithium-ion batteries. It enables the setting of test conditions, execution of the test, confirmation of test status, and display and saving of test results.
* Standard equipment is only controlling one channel version. If you want to control multiple channels, you need to purchase the CD-BC-512 ch.

Features
- The charge-discharge test (creation of test condition to execution to check) can be executed by dedicated software only.
- Possible to execute the charge-discharge test by using the battery cycle tester made by our company of a maximum of 512 units
- Possible to check the datalog during the test
- Possible to execute the charge-discharge test linked with Espec's thermostatic chamber.
- Charge-discharge tests for various batteries: lead-acid, nickel-cadmium (NiCd), nickel-metal hydride (NiMH), lithium-ion (Li-ion), and lithium-ion polymer (Li-ion polymer), are supported.
Example of use
[Repetitive charge/discharge test of lithium-ion battery]
Battery specification | Rated capacity | 2.4 Ah |
---|---|---|
Nominal voltage | 3.7 V | |
About 200 times charged/discharged | ||
Charge | Mode | CC-CV charging |
Charging current | 2.0 A | |
CV voltage | 4.2 V | |
Discharge | Mode | CC discharge |
Discharging current | 2.0 A | |
End voltage | 2.8 V | |
Average temperature | 20 °C |

Using "CD-BC" enables various connections and controls.
Example of connection 1 [CD-BC-1ch]
At the shipment, CD-BC-1ch (1ch control supported) is included with the product. If you want to control more channels, you have to purchase the product CD-BC-512ch separately.
Example of connection 2
Example of connection 3
[Connection for individual control]
Please note that the same setting is to be selected for all the power supplies within each group. However, you can individually select different settings as well as controls according to the groups, for instance, in Group A and B.
Download
-
CDPU series Datasheet
Date: 2023-3-16 rev.12
PDF(4,190 KB)
-
CDPU series Instruction Manual
Date: 2020-10-0 rev 0.0
PDF (3,280 KB)
-
CD/CDPU series software CD-BC Instruction Manual
Date: 2021-06-14 rev 3.5
PDF (2,744 KB)
-
CDPU series USB Driver
Date: 2021-07-01 rev1.7.4
ZIP (6,774 KB)
The account registration is necessary for downloading
-
CDPU series Datasheet
Date: 2023-3-16 rev.12
PDF(4,190 KB)
-
CDPU series Instruction Manual
Date: 2020-10-0 rev 0.0
PDF (3,280 KB)
-
CD/CDPU series software CD-BC Instruction Manual
Date: 2021-06-14 rev 3.5
PDF (2,744 KB)
-
CDPU series USB Driver
Date: 2021-07-01 rev1.7.4
ZIP (6,774 KB)
In this website, we provide only the latest version of information including instruction manuals as of our products. Therefore, the newest versions of manuals on the website might be not same as the ones of products you purchased in the past.