What do rechargeable batteries do




















Several different combinations of chemicals are commonly used in rechargeable batteries. Different types include lead-acid, nickel-cadmium NiCd , nickel-metal hydride NiMH , lithium-ion Li-ion , lithium-ion polymer LiPo , and rechargeable alkaline batteries. Their ability to supply high-surge currents means that the cells maintain a relatively large power-to-weight ratio. These features, along with their low cost, make them attractive for use in motor vehicles, which require high currents.

NiMH batteries use positive electrodes of nickel oxyhydroxide NiOOH , as does the NiCd, but the negative electrodes use a hydrogen-absorbing alloy instead of cadmium.

A NiMH battery can have two to three times the capacity of a NiCd battery of equivalent size, and its energy density approaches that of a lithium-ion cell. The lithium-ion battery is a family of rechargeable batteries in which lithium ions move from the negative electrode to the positive electrode during discharge, and back when charging.

The negative electrode of a conventional lithium-ion cell is made from carbon. The positive electrode is a metal oxide, and the electrolyte is a lithium salt in an organic solvent. They are one of the most popular types of rechargeable battery for portable electronics, with one of the best energy densities and only a slow loss of charge when not in use. Lithium ion batteries are more expensive than NiCd batteries but operate over a wider temperature range while being smaller and lighter.

They are fragile and thus need a protective circuit to limit peak voltages. Lithium-ion polymer LiPo batteries are usually composed of several identical secondary cells in parallel to increase the discharge-current capability. Their primary distinction from lithium-ion batteries is that their lithium salt electrolyte is not held in an organic solvent. Battery disposal and our environment.

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Categories: Battery Tips. Tags: rechargeable , non-rechargeable , battery tips , battery kinds , batteries. High Quality Sellers, For High Quality Products When purchasing rechargeable batteries, it is important to make sure that you only purchase them from a reputable source. Battery University. Battery Categories, Chemistries, and Types. Battery categories: An easy minute primer Primary battery options: A look at alkaline batteries Primary battery options: A look at lithium batteries Primary battery niche: The silver-oxide watch battery Primary battery niche: Zinc-air hearing device batteries Secondary battery options: Nickel-based Ni-CD and Ni-MH batteries Secondary battery options: Lithium-ion rechargeable batteries.

Rechargeables are not only more money than single use batteries, but the price of a quality charger may negate their value altogether depending on use.

Another potential problem with rechargeable batteries is that they can often become weak and unpredictable with age. This can lead to faster depletion and lower performance.

Better quality rechargeable batteries will extend lifespan, but inevitably their performance will still decline and eventually result in the need for replacement. Devices like game remotes, toys, headsets, and wireless computer equipment would be examples of these and present the best opportunity to realize the cost benefits and convenience.

While a cheap charger may get the job done in the short-term, many do not include automatic shut-off features that prevent over charging and potential damage. Some electronics manufacturers may specifically recommended against the use of rechargeable batteries.



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