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About Battery

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Home > About Battery > Battery Glossary

Please choose the initial letter of the glossary.

	A——C
	Ampere hours (Ah)- The unit of measure used for comparing the capacity or energy content of batteries with the same output voltage. For automotive (Lead Acid) batteries the SAE defines the Amphour capacity as the current delivered for a period of 20 hours until the cell voltage drops to 1.75 V.

	D——L
	Deep cycle battery - A battery designed to be discharged to below 80% Depth of Discharge. Used in marine, traction and EV applications.

	M——Q
	Memory effect - Reversible, progressive capacity loss in nickel based batteries found in NiCad and to a lesser extent in Ni-MH batteries. It is caused by a change in crystalline formation from the desirable small size to a large size which occurs when the cell is recharged before it is fully discharged.

	R——Z
	Secondary battery - A battery which can be recharged and used repeatedly.