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Battery Information
C–2 976-0043-01-01
Introduction
Batteries Batteries are available in different sizes, amp-hour ratings, voltage, liquid
or gel, vented or non-vented, chemistries, etc. They are also available for
starting applications (such as an automobile starting battery) and deep
discharge applications.
Recommendations Consider the following recommendations for battery use:
•
Use only the deep discharge types for inverter applications.
• Use the same battery type for all batteries in the bank.
• Use only batteries from the same lot and date in your battery bank.
This information is usually printed on a label located on the battery.
Battery Types
There are two principal types of batteries: starting and deep-discharge
(with several different types of chemistries). Batteries can be either sealed
or non-sealed (vented).
Deep discharge The battery types recommended for use in an inverter system are: Flooded
Lead Acid (FLA), Sealed Gel Cells (GEL), Sealed Absorbed Glass Mat
(AGM); and alkaline types Nickel-iron (NiFe) and Nickel-Cadmium
(NiCad).
Starting Automotive (starting) batteries are designed to provide high starting
current for short periods of time and are not appropriate for inverter
applications.
Deep-cycle Flooded Lead Acid (FLA)
Description A flooded lead acid battery is designed to be deep-discharged before
being recharged, making it suitable for inverter applications. Flooded
batteries require periodic maintenance consisting mainly of adding
distilled water to the cells.
Attributes
Types of FLA Batteries Attributes
Golf Cart • Popular for smaller off-grid home
systems
• Many medium sized inverter
systems use “L16” batteries
• Rugged, long lasting
• Typically rated at 6 volts (220 to
350 amp hours)