In simplest technical terms, ohmic technology is based on Ohm’s Law, which expresses the relationship between Volts, Amperes and Ohms in an electrical circuit.

Ohm’s law can be expressed as follows: *Volts (E) = Amperes (I) x Ohms (R).*

If any two of the three values of voltage (Volts), current (Amperes) or resistance (Ohms) are known, the third value can be calculated using the above expression of the law.

Thus, Ohmic technology attempts to use voltage and current to determine the resistive characteristic of a battery. Higher resistance equates to a reduced ability to produce current. This characteristic is translated into a measurement of resistance or impedance (Ohms) in some Ohmic technologies; more recent technology uses a converse measurement, called ** Conductance**.

Years of laboratory and field-based research found that conductance correlates with battery capacity as measured in a timed discharge test. Since voltage and specific gravity testing are not predictive, timed discharge testing is very time consuming and expensive, conductance testing is a very effective and economical way of analyzing the health of your battery systems.

Correlation studies have been performed on a significant number of valve regulated AGM and GEL cells, as well as vented flooded cells. These studies have shown that conductance test results are very predictive of battery timed discharge capacity, while voltage measurements are shown to be of little value. This data has been presented to a number of international organizations.

*Patented Conductance Technology*** **is the core of our battery testing methodology and recognized as a standard for determining battery state-of-health worldwide.

Not all batteries are made equal. Have you ever wondered why there are different battery sizes and ratings? Did you know every battery type serves a specific functionality?

The two main battery types are **stationary batteries** and **“starting” batteries**. It is very important that you find the correct battery for your particular application, as the wrong choice can affect both the battery’s efficiency as well as its lifespan.

A ** stationary battery** is meant to provide a continuous current of the same intensity for a prolonged time span. In order to do this, they are designed with thick internal plates that slows down the process delivering amperes to the load. Stationary batteries are typically rated in ampere-hours.

An ampere-hour represents the amount of electricity when a current of 1 Ampere passes for 1 hour. The ampere-hour capacity varies with the rate at which the battery is discharged; the slower the discharge, the greater the amount of electricity that the battery will deliver. A typical rate for ampere-hour capacity is the amount of electricity that a battery will deliver during 20 hours before the voltage falls to 10.50V. For example, a 60Ah battery will deliver a current of 3A for 20 hours.

** Starting batteries** are just the opposite. They are designed with thin plates so they can provide quick bursts of energy, such as a backup generator or car would need while starting. This only discharges the battery by about 1-3%, which is then topped off typically by an alternator. This is typically known as the battery cranking amps.

Cranking amps are the numbers of amperes a lead-acid battery at 32 degrees F (0 degrees C) can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12 volt battery)

To recap, stationary batteries provide a lower but longer duration amount of energy, but cannot deliver as many peak cranking amps. Starting batteries are made to provide high power for higher amps, more frequent short draws, and limited long term discharge.

Just like finding the right battery for the job, you must find the correct battery analyzer to test the battery.