Harding Energy, Inc.

The Nickel Metal Hydride (NiMH) cell absorbs hydrogen in the metal alloy makeup of its negative electrode during charge. As the cell is discharged, the metal alloy releases hydrogen to form water. The use of the metal alloy is the underlying reason for the high energy density of the NiMH cell compared to other chemistries. NiMH batteries have a long cycle life and good storage characteristics. Furthermore, the battery can be recharged at any time without experiencing voltage depression (or memory effect). Most importantly, the NiMH battery is an environmentally friendly product. Over 55 Standard Cells Specialized Cells Available Standard Series High Current Capable Series High Temperature Capable Series Multiple Form Factors Cylindrical Form Factor Prismatic Form Factor ButtonCoin Form Factor

Lithium Ion (Li-Ion) cells have a negative electrode (anode) made from lithium compounds. Lithium is a highly reactive material and is much lighter than the hydrogen-absorbing metal alloy of the NiMH negative electrode. This leads to higher gravimetric energy densities for the Li-Ion cell.Cells can stay in storage for 12 months without requiring maintenance. The expected cycle life of a Li-Ion in an application is about 500+ full charge and discharge cycles. Standard Cell Sizes Available Standard and Custom PCM Custom Cell Sizes Available Cylindrical Form Factor

A lithium primary battery contains a positive electrode and a negative electrode, wherein the positive electrode comprises manganese dioxide containing boron and phosphorus and the negative electrode comprises lithium or lithium alloy. Lithium Primary Batteries are widely used in applications in consumer, industrial, medical, automotive and military devices, and used as non-rechargeable batteries. Lithium primary batteries have high energy density, long shelf-life and light weight. Harding Also has other primary batteries available including alkaline and coin cells. Alkaline batteries are commonly used in many things such as flashlights and personal stereos. They serve as excellent sources of energy for these things. The alkaline battery gets its name because it has an alkaline electrolyte of potassium hydroxide, as opposed to the acidic electrolyte of the zinc-carbon batteries which are offered in the same nominal voltages and physical size. In an alkaline battery, the anode (negative terminal) is made of zinc powder (which allows more surface area for increased rate of reaction therefore increased electron flow) and the cathode (positive terminal) is composed of manganese dioxide. Alkaline batteries are comparable to zinc-carbon batteries, but the difference is that alkaline batteries use potassium hydroxide (KOH) as an electrolyte rather than ammonium chloride or zinc chloride. Compared with silver-oxide batteries, which alkalines commonly compete against in button cells, alkalines have lower energy density and shorter lifetimes but lower cost.