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Deep Cycle Batteries
 

Deep cycle batteries differ from other lead acid batteries as they are designed to keep a constant charge as they discharge. This means that the power delivered from the battery does not decrease as the battery's total power storage is used. This is effective until the battery has lost eighty percent of its total storage capacity. These batteries also have solid lead plates, not sponge like or porous plates as with typical lead acid batteries used in cars and for starter systems. These plates give the battery less immediate power and are used in applications that have far more frequent charging and discharging cycles. Although, deep cycle batteries can be used as starter batteries with an increased size.

A common application of deep cycle batteries is in the storage of solar power. As the solar panels generate electricity during the day to be used it cannot generate electricity at night for obvious reasons. The deep cycle battery is used during the daytime hours to store electricity for night use. As the panels generate power during the day a portion of it is siphoned off and stored in the batteries at a rate that compensates for usage at night. This will discharge the battery at night and then recharge it during the day each and every day. The charge rate is set so that the batteries will have the longest life possible—meaning the batteries will never be discharged to less than eighty percent and an average of fifty percent.

Deep cycle batteries are being used as an alternative to gasoline generators as a source of back-up power. These systems include the deep cycle batteries as they can withstand long depletion cycles and with proper voltage control can last from five to seven years. These systems will need to include an inverter for AC loads, a charge controller, batteries, and a BOS. Some of these systems are available as a single package from manufacturers or they can be built on site to cater to the needs of the facility. These systems are highly useful in areas where power outages are frequent, or where the area experiences fluctuations in the voltage flow; however, these deep cycle battery systems are being used in urban and city areas, too.

While typical gasoline powered cars do not have deep cycle batteries, they are common on golf carts and in RV systems. Golf carts are probably the most common small system use of deep cycle batteries in the mainstream world. They are charged and discharged several times a day in the busy season, to a few times a month in the off-season making deep cycle batteries the best suited solution for power.

Recreational vehicles need to power lights, stoves, water pumps, and a myriad of other electric appliances while the vehicle is not running. By employing deep cycle batteries in the electrical system the RVs have enough power to operate. When the vehicle runs the next day, or in the next few days, the batteries will begin charging again.

LINKS:

Difference Between Lead Acid and Deep Cycle lead acid Batteries

Car and Deep Cycle Battery Links and FAQs

Basic and Deep Cycle Battery FAQ

Deep Cycle Batteries Description and Review

Deep Cycle Battery Care and Maintenance

Back Up Power Systems

Using Deep Cycle Batteries in RVs: A Guide

Volts, Joules and Deep Cycle Batteries