Infratek 23DC-Source Battery Tester | Seven Star LLC
Overview
The Infratek 23DC battery tester is a handheld instrument that characterises electrical sources, i.e. batteries and DC power supplies, by measuring their unloaded DC voltage and their internal source resistance Ri. The 23DC is the battery and DC source testing model of the Infratek range, a Swiss-made line of testers used by plant maintenance and battery service teams to judge the condition of stationary, traction and vehicle batteries.
This example is supplied complete with the carrying case, Windows software, 4-wire measuring clips, an RS-232 to USB adaptor and an RS-232 to Ethernet adaptor, as stated in the original listing, making the Infratek 23DC battery tester ready to use with a laptop for automated testing and reporting.
Engineering & Design
The 23DC uses a 4-wire connection to the battery or DC supply, which eliminates the effect of lead resistance on the measurement. It is designed for battery testing from 0.5 Ah to 2000 Ah and for DC power supply testing up to 100 V. The tester measures single cells from a minimum of 1.65 V, battery blocks and battery strings up to 100 V.
The instrument offers a wide Ri range from 0.50 mΩ (for a 2000 Ah battery) to 8 Ω, and a voltage measurement range of 0-30 V / 0-200 V with 1% accuracy, so the same unit covers everything from small cells to large substation banks. An internal memory stores up to 500 complete sets of measurements (UB and Ri), and the isolated RS-232 interface allows connection to a label printer or a computer with the Windows software.
Key Features
- Tests batteries from 0.5 Ah to 2000 Ah and DC supplies up to 100 V
- Measures unloaded voltage and internal source resistance Ri
- Wide voltage range 0-30 V / 0-200 V and Ri range 0.50 mΩ to 8 Ω
- 4-wire measuring clips for accurate, lead-free measurements
- Stores up to 500 complete measurements internally
- Isolated RS-232 interface with Windows software, USB and Ethernet adaptors
- Supplied with carrying case per the original listing
Applications
- Condition testing of stationary battery banks in substations and UPS systems with the Infratek 23DC battery tester
- Testing traction batteries and car batteries
- Verifying DC power supply output and internal resistance
- Routine battery maintenance and acceptance testing with the Windows software
Specifications
| Manufacturer | Infratek |
| Model | 23DC-Source Tester |
| Battery range | 0.5 Ah – 2000 Ah, sealed and non-sealed lead acid and other chemistries |
| Voltage ranges | 0-30 V and 0-200 V, accuracy 1% ±1 digit, max 200 Vdc |
| Resistance ranges | 0-20 mΩ, 0-400 mΩ, 0-8 Ω, accuracy 1% ±2 digits |
| Measurement | 4-wire, 0.6 s per measurement, single cells from 1.65 V to strings up to 100 V |
| Data storage | 500 complete sets (UB, Ri) |
| Interface | RS-232, isolated 300 V CAT II (1500 V isolation to inputs) |
| Supply | 9 V battery or accumulator, 6-8 h operation |
| Size / weight | 155 x 90 x 35 mm, 400 g |
| Operating temperature | 0 °C to +30 °C |
Compatibility & Integration
The Infratek 23DC battery tester connects to the battery under test with the supplied 4-wire clips, and to a computer through the isolated RS-232 interface using the included USB or Ethernet adaptor. The Windows software provides automated test routines, result storage and reporting, which makes fleet testing of multiple batteries quick and repeatable.
The instrument is reverse voltage protected up to 200 V, and the RS-232 interface isolates the high battery potential for user safety, per the manufacturer’s user manual. Before testing, confirm the battery voltage is within the 200 V maximum and follow the manual’s guidance on measurement intervals at higher voltages.
Display, Resolution and Repeatability
The Infratek 23DC presents results on a 16-character LCD with 6.5 mm digits, driven by a menu structure that needs only three controls; the instrument requires no zeroing and no manual adjustment before a measurement. Voltage is resolved to 10 mV on the 0-30 V range and 0.1 V on the 0-200 V range, while internal source resistance is resolved to 0.01 mΩ on the 0-20 mΩ range and 0.1 mΩ on the 0-400 mΩ range, giving enough discrimination to separate a healthy 2 V cell from one that has begun to lose capacity.
Voltage UB and internal resistance Ri are acquired in the same operation, and the manufacturer states that readings repeat within ±1 digit even when the battery under test is on float charge. That matters in practice, because a substation or UPS string can be surveyed without taking the charger offline. Storage temperature is specified as -10 °C to +40 °C, alongside the 0 °C to +30 °C operating window listed above.
Battery Condition Assessment in Practice
Internal resistance is most useful as a trend rather than as a single absolute figure. Established battery maintenance practice, reflected in standards such as IEEE 1188 for valve-regulated lead-acid batteries and IEEE 450 for vented lead-acid cells, is to record an internal-ohmic baseline for every cell when a string is commissioned and to compare later readings against that baseline, so the cell to investigate is the one whose Ri has risen materially against its own history. The 500-set internal memory of the Infratek 23DC battery tester exists for exactly this purpose, and the supplied Windows software turns the stored UB and Ri pairs into the per-cell records that ISO 9000 quality systems and annual battery condition reports require.
Ordering Information
To order the Infratek 23DC battery tester from Seven Star LLC, quote the model number and the accessories you require. We confirm availability and delivery to your site in Oman or anywhere in the GCC, and we verify the instrument and its accessories before dispatch.
Why Seven Star LLC
Seven Star LLC supplies battery test equipment and electrical testing instruments to industrial customers across Oman and the wider GCC region. Every Infratek 23DC battery tester we supply is checked against the model number and included accessories before dispatch, and our team confirms the unit matches your application before you order.
FAQ
What does the Infratek 23DC do?
The Infratek 23DC battery tester characterises batteries and DC power supplies by measuring their unloaded DC voltage and internal source resistance Ri, indicating the condition of the source.
What batteries can the 23DC test?
It tests batteries from 0.5 Ah to 2000 Ah, including stationary, traction and car batteries, with single cells from 1.65 V up to battery strings of 100 V, per the manufacturer’s specifications.
What is included with this 23DC tester?
Per the original listing: carrying case, Windows software, 4-wire measuring clips, RS-232 to USB adaptor and RS-232 to Ethernet adaptor.
How does the 23DC connect to a computer?
Through the isolated RS-232 interface using the included USB or Ethernet adaptor, together with the Windows software for automated testing and reporting.
Is the 23DC safe to use on high-voltage batteries?
Yes. The tester is reverse voltage protected up to 200 V, and the RS-232 interface provides 1500 V isolation between the inputs and the computer connection, per the user manual.
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