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AGM Batteries use a glass-mat separator which absorbs 100% of the lead acid electrolyte. Because of the immobilized electrolyte, an AGM battery will not leak or spill and does not require water addition. This battery is used in deep-cycle and specialty applications such as telecommunications, wheelchairs and security alarm systems, as well as in automotive starting applications.
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"Gell Cell Batteries" use lead-acid in which the electrolyte is immobilized by adding a gelling agent. Totally sealed and valve-regulated, it is nonspillable and does not require water addition. Gel-cell batteries are used in special applications such as telecommunications, wheel chairs and security alarm systems.
These batteries tend to have very good "capacity" per weight but do not release "high amps" as well as AGM or Liquid "Wet Batteries"
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Still the most popular battery used today its main application is for the automobile industry, although it has a growing number of other applications. Its advantages are low cost, high voltage per cell and good capacity life. Disadvantages are poor low temperature characteristics, it is relatively heavy, and it cannot be left in a discharged state for too long without being damaged. Related Batteries: Absorbent Glass Matt (AGM) Gel/Gel Cell Sealed Lead Acid
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