中文 
The deep-cycle battery is designed to discharge up to 80 percent repeatedly and has a thicker plate. The main difference between a deep-cycle battery and other batteries is that the plate is a solid lead plate rather than a sponge. This results in less surface area, so less instantaneous power is needed to start the battery. Although it is possible to cycle to 20% of the charge, the best balance between cost and life is the average cycle of 80% of the discharge.
Lithium batteries are disposable (primary) batteries, with lithium metals or compounds acting as anodes.
They differ from other batteries in their high charge density (long life) and high cost per unit.
Lithium polymer batteries: Substance or hype?
The word "lithium polymer" has become synonymous with advanced battery technology. But what is the relationship between "polymers" and classic lithium-ion batteries? In this paper, we examine the fundamental differences between lithium ion and lithium ion polymer batteries. We looked at packaging technology and evaluated the cost of these batteries for energy conversion.
The lithium polymer differs from other battery systems of the type used for electrolytes. The original design dates back to the 1970s and USES polymer electrolytes. This electrolyte does not conduct electricity, but allows ions (charged atoms or groups of atoms) to exchange plastic membranes. The traditional porous separator is replaced by a polymer electrolyte impregnated with electrolytes.