Internal resistance and open-circuit voltage of cells
Battery Testers
Internal resistance and voltage measured together, fast enough to sort a production line and accurate enough to grade a used cell.
Product photography to be supplied
- Category
- Electronic Measuring Instruments
- Form
- Benchtop / handheld
- Industries
- Mobility, Batteries
What this group is for
Written as engineering fact. Nothing on this page states a specification the manufacturer has not supplied.
AC four-terminal method measures internal resistance without discharging the cell under test.
Resistance and OCV acquired in the same contact, which is what makes line-speed sorting possible.
Stable readings in the electrically noisy environment a real battery line actually is.
Pass/fail comparator against a grading window, for shipping inspection and for second-life sorting.
Highlighted models
Model data to be supplied
Specific Battery Testers models are quoted against the application, because the right one depends on the range you need to resolve and the conditions on site.
Tell us what you are measuring and we will name the models that cover it, with the ranges and accuracy classes written out in full.
Send me the specification sheet
Ranges, accuracy classes and model numbers for Battery Testers, by email. No call unless you ask for one.
Where it is used
Four situations this group is bought for, and the points on a real installation where it is connected.
- Shipping inspection on lithium-ion cell and module lines.
- Incoming inspection of purchased cells.
- Maintenance of stationary battery banks and UPS strings.
- Grading used cells and modules for reuse.
Typical measurement locations
Internal resistance and open-circuit voltage
Battery / ESS
A cell degrades in its internal resistance long before it degrades in its voltage.
Related groups
Battery Testers: which one fits your measurement?
Give us the quantity, the range you need to resolve and the conditions on site. We will name the models that cover it and say plainly where they stop.
What has to be true inside the company
Four criteria of innovation, and the reason a measurement can be trusted outside it.
Increasing customer value
Production system
A production system built so that a measurement need turns into a delivered, calibrated instrument without the customer absorbing the delay.
Delivering peace of mind to customers
After-sales service
An instrument is only as good as the number it still reports in year five. After-sales service exists to keep that number trustworthy.
Pursuing productivity and precision
Manufacturing capabilities
Precision is a manufacturing capability before it is a specification. It is held in the process, not promised in the catalog.
Creating new customer value
Collaborative development of new products
When a field has no instrument for the quantity it needs to see, the instrument gets developed with the customer who needs it.