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Terminology
Ampere (A)
A unit of measurement for electron flow or current through an electrical circuit. (Amp = Volt / Ohm)
Ampere-Hour (AH)
A unit of measurement for electron flow or current through an electrical circuit for a certain period of time. (Ampere X Hour = Ampere-Hour).
Electrolyte
In a lead acid battery, it is a dilute solution of sulfuric acid (H2SO4) and water.
Hydrometer
A tool used to measure the specific gravity of the electrolyte solution.
Ohm (Ω)
A unit of measurement for electrical resistance within an electrical circuit. ( Ohm = Volt / Ampere )
Ohm's Law
Expresses the relationship between voltage ( volts ), current ( amperes ), and resistance ( ohms ). (Ohms = Volts / Amperes).
Open Circuit Voltage
The voltage of a battery when there is no load attached ( not receiving or delivering energy). This measurement is best taken when the battery has been at rest for at least 6 hours.
Parallel Connection
A method of wiring batteries together by connecting the positive terminal of the first battery to the positive terminal of the second and the negative terminal of the first to the negative of the second. The capacity for batteries connected in parallel becomes additive, while the voltage remains the same as the individual battery.
Primary Battery
An energy storage device that can deliver energy but cannot be recharged.
Secondary Battery
An energy storage device that can deliver energy and can be recharged.
Instructional Videos
Automotive Battery Check
Cody explains how to check your automotive battery. Click "read more" to watch the video.
How to connect Batteries in Series
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How to connect Batteries in Parallel
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How to create a Series Parallel Connection
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Battery & Solar Sizing Workshop
Want to learn how to size Solar and Energy Storage? Our fellow Rotarians gave us the opportunity to teach a class about
Battery Systems' Solar + Energy Storage. click "Read More" to watch the video.
Simple Explanation of "Starting" vs. "Deep Cycle" Batteries
Click "Read More" to watch the video.