Rechargeable Alkaline Battery
Chemical Composition
Chemical Composition
The main difference in composition between rechargeable and regular alkaline is that the blend of materials and formula used to make the batteries has been altered to allow for the batteries to recharge. Without this modification in chemical composition, the batteries would not hold multiple charges. The batteries are also designed to resist leakage, which is sometimes a problem when traditional alkaline batteries are recharged or discharged too far.
Proper Use and Durability
Although these batteries can be used in any device that supports a standard size (AA, AAA, C, D, etc.), they are formulated to last longest in periodical use items. This type of battery is best suited for use in low-drain devices such as remote controls, or for devices that are used periodically such as flashlights, television remotes, portable radios, etc.
Disadvantages From Other Rechargeable Batteries
Recharging Issues
Though rechargeable alkaline batteries are relatively cheap and contain a high charge-capacity, their rechargable capacity will vary by how much they are discharged:
If they are discharged by less than 25%, they can be recharged for hundreds of cycles to about 1.42V.
If they are discharged by less than 50%, they can be almost-fully recharged for a few dozen cycles, to about 1.32V.
After a 'Deep Discharge', they can be brought to their original high-capacity charge only after a few charge-discharge cycles.
Environmental Issues
Some types of cells contain nickel, mercury or cadmium and thus are a serious environment-hazard unless special care is taken for their disposal. As of August 2007 a number of companies make batteries that are non-toxic and free from heavy metals.
Environmental Benefits
Recent advancements in technology and chemical composition has resulted in the modern rechargeable alkaline battery emerging as a leader in the industry-wide push towards more environmentally responsible batteries.
EnviroCell Alkaline Rechargeable Batteries
Launched in February 2009, EnviroCell batteries are a new product designed for use in everyday low-drain devices such as wireless keyboards, flashlights and radios. Featuring a patented technology, EnviroCell batteries can be recharged safely up to 60 times with no memory effect. Unlike other rechargeable batteries like lithium ions, EnviroCells contain absolutely no toxic metals and can be safely disposed .
Production and Supply issues
Rayovac produced a variety of these rechargeable batteries called Renewal . Rayovac discontinued these products, possibly due to poor market acceptance and cell leakage problems, or due to corporate strategy and superior profit from single use batteries. Similar rechargeable alkaline batteries are still available from other vendors. More recently, Rayovac has released a new line of rechargeable NiMH batteries, but from the information listed on their website, they no longer produce an alkaline rechargeable battery.
Yet another Rechargeable Alkaline batteries producer brand is "PureEnergy". PUREENERGY's website state: "Rechargeable Alkaline is the only rechargeable battery that can be used in any application that uses disposable alkaline batteries. It also offers several performance and cost saving advantages over other Rechargeable batteries."
Some say that certain types of battery chargers are able to recharge alkaline batteries as well as NiCd and NiMH, provided that the charger only has one type in it at any one time. Pure Energy currently does sell a NiMH and Alkaline dual chemistry charger that does work well for both battery types. Some claim that it is indeed possible to recharge a regular non-rechargeable alkaline battery under the right conditions and using the right type of current; this is still dangerous. There is a charger available called the Battery Xtender, which is specially designed to recharge ordinary alkaline batteries, in addition to NiCd and NiMH. Under ideal conditions it's supposed to recharge regular alkalines up to 10 or 15 times, though in practice five recharges is more common (after which they start to leak).[citation needed] It is also possible to recharge primary alkaline batteries in a rechargeable alkaline charger or even some NiMh/NiCd chargers, but the manufacturers recommend against doing so.
See also
Battery recycling
Recharging alkaline batteries
External links
EnviroCell Alkaline Rechargeable Batteries
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Galvanic cells
Non-rechargeable:
primary cells
Alkaline battery Aluminium battery Bunsen cell Chromic acid cell Clark cell Daniell cell Dry cell Grove cell Leclanch cell Lithium battery Mercury battery Nickel oxyhydroxide battery Silver-oxide battery Weston cell Zamboni pile Zinc-air battery Zinc-carbon battery
Rechargeable:
secondary cells
Air-fueled lithium-ion battery Lead-acid battery Lithium-ion battery Lithium-ion polymer battery Lithium iron phosphate battery Lithium sulfur battery Lithium-titanate battery Nickel-cadmium battery Nickel hydrogen battery Nickel-iron battery Nickel-metal hydride battery Low self-discharge NiMH battery Nickel-zinc battery Rechargeable alkaline battery Sodium-sulfur battery Vanadium redox battery Zinc-bromine battery
Kinds of cells
Battery Concentration cell Flow battery Fuel cell Trough battery Voltaic pile
Parts of cells
Anode Catalyst Cathode Electrolyte Half cell Ions Salt bridge Semipermeable membrane
Categories: Rechargeable batteries | Canadian inventions | Electric batteries | Recyclable materialsHidden categories: All articles with unsourced statements | Articles with unsourced statements from May 2007
by: wowo
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