Deep cycle battery
A lead-acid gel battery
A deep-cycle lead-acid battery is designed to be regularly discharged to most of its capacity. In contrast, starter batteries (e.g. most automotive batteries) are designed to deliver sporadic high current for cranking the engine, and to be frequently discharged of only a part of their capacity. While a deep-cycle battery can be used as a starting battery, the lower “cranking amps” imply that an over-sized battery may need to be used.
Structural differences between deep cycle batteries and cranking batteries are thicker active plates, with higher-density active paste material, and better separators. Capacity of a new deep-cycle battery is designed to be limited by the amount of electrolyte in the battery, which protects the plates. Alloys used for the plates may contain more antimony than for starting batteries. Some batteries that are labelled “deep-cycle” do not possess these thick plates, however, and are actually “hybrid” batteries. While a deep-cycle battery is designed to discharge as much as 80% of its charge capacity over many cycles, companies recommend that a hybrid battery not be discharged beyond 50% of its capacity.
Applications of deep-cycle batteries include:
Traction batteries to propel vehicles, such as golf carts, and other highway electric vehicles
Industrial electrically-propelled forklifts and floor sweepers
Recreational vehicles
Trolling motors for recreational fishing boats
Off-grid energy storage systems for solar power or wind power, especially in small installations for a single building.
Uninterruptible power supply
Power for instruments or equipment at remote sites.
See also
Battery (electricity)
Car battery
Electric vehicle battery
Gel battery
Lead-acid battery
References
^ David Linden, Thomas B. Reddy (ed). Handbook Of Batteries 3rd Edition. McGraw-Hill, New York, 2002 ISBN 0-07-135978-8, pages 23-44 to 23-53
^ .
Northern Arizona Wind & Sun Deep Cycle Battery Overview
Battery Council International
Car and Deep-Cycle Battery FAQ 7.0
External links
The difference between deep-cycle batteries and regular lead-acid (car) batteries
Categories: Electric batteries | Renewable energy storage technology
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