Listed below are the most common battery types being used for today’s various electronic gadgets.

NiCd Battery
A NiCd battery is also a type of rechargeable battery. It uses metallic cadmium as negative electrodes. The advantage of NiCd batteries are that they are lighter in weight when compared to their counterparts. It has good charging efficiency and has a small variation in voltage during discharge. They are lower capacity batteries when compared with NiMH batteries. Major area of usage for NiCd batteries are cordless and wireless telephones, emergency lighting, model airplanes, as well as power tools. NiCd batteries are also being used in various electronic devices as well as in electronic toys.

NiMH Battery
A NiMH battery is a type of rechargeable battery that uses hydrogen-absorbing alloy as negative electrodes. These batteries are high capacity batteries if compared to other rechargeable battery types (like NiCd). These batteries are used in all-electric plug-in vehicles, as well as in hybrid vehicles. NiMH technology is used extensively in rechargeable batteries for consumer electronics. Due to their high capacity, long-lasting attribute and easy recharge functions, they are extremely popular among electronic gadgets users.

Li-Ion Battery
This is the most popular and easily identifiable battery type in these gadget-crazy times. One can find these batteries in any or almost every mobile phone being used by people in all parts of the world. A Li-ion battery is a rechargeable battery in which a lithium ion moves between the anode and cathode. During discharge, lithium ion moves from anode to cathode; and from cathode to anode while charging. Due to their high energy efficiency Li-ion batteries are not only being used in electronic devices such as mobile and laptops but also in defense, automotive, and aerospace applications.

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There are many different types of batteries available on the market and there has been a considerable boost in technology from the days of the Italian physicist Alessandro Volta, who started the modern development of the battery with the Volta Pile. Today there are different types of batteries and battery chargers, depending on their usage and application.
As said above, there are different types of battery cells available. The generally available ones are the types of electrochemical cells, like the fuel cells, electrolytic cells, galvanic cells, voltaic piles and flow cells. A battery's features depend upon many various factors, like the current drain, internal chemistry and temperature. Let's discuss the two broad categories of batteries.Once assembled, primary batteries can immediately produce a current. Disposable batteries are a type of primary cells and are supposed to be used once and thrown out after. Primary batteries are most commonly in used in low drain appliances or portable devices that do not require a very high voltage. Disposable batteries cannot be reliably recharged, as the chemical reaction in the battery cannot be reversed and also the active materials do not get converted back to their original form. It is advisable that you do not attempt to recharge primary cells. In some cases of primary batteries, like the batteries used in the telegraph, circuits were restored back to operation after replacing the components of the battery cell which was consumed during the chemical reaction.