### device:

Battery
* All batteries contain lead and sulfuric acid
  - produce electrons from a chemical reaction
* Batteries Invest in rechargeable batteries
  - When alloyed with other metals, zinc becomes a good electrical conductor
  - absorb energy
* Batteries absorb enough energy
  - magical energy
  - account for two-thirds of global lead use
  - actually store chemical energy
* Batteries also account for a large amount of the toxic metals sent to landfills
  - convert chemical energy to electrical energy
  - have chemical potential energy
  - vary by connector type, wiring, and voltage
* Batteries are a better source of DC electricity
  - also a choking hazard for small children
* Batteries are an efficient way to make electricity portable
  - important part of today's highly charged electrical society
  - artillery
  - assaults
  - capable of power drills
* Batteries are chemically-powered charge pumps which create voltage
  - collections
  - comprised of two different metals suspended in an acidic solution
  - containers that store energy, which can be used to make electricity
  - devices that convert stored chemical energy into useful electrical energy
  - electrical components
  - electro-chemical devices
  - electrochemical cells that convert chemical energy to electrical energy
  - extremely important for reliable operation on wireless microphones
  - hard to charge in cold weather
* Batteries are highly engineered electrochemical cells
  - toxic in landfills or if they are burned
  - limited by the physical laws of the universe
* Batteries are located in cars
  - cell phones
  - hearing aid
  - made of a wide variety of electrodes and electrolytes to serve a wide variety of uses
  - part of baseball teams
  - power sources
  - probably the greatest contributor to camera weight
* Batteries are the component that are most often skimped on, but can make or break a system
  - heart of an inverter-powered electrical system, storing power for use on demand
  - principal source of certain heavy metals found in municipal solid waste
  - reason why the phones stay on when the power is out
  - weakest link in the renewable energy system
  - typical voltage sources that use chemical reactions to create an electrical potential
* Batteries are used for charge
  - runs
* Batteries can also help improve fuel efficiency
  - be the primary power source for residential smoke detectors
  - release explosive gases
* Batteries can store different amounts or volumes of electricity, expressed in amperage
  - unused energy
* Batteries come in a variety of shapes and sizes
  - voltages
  - lots of different shapes, sizes and voltages
  - conduct electricity
  - consist of two electrodes immersed in an electrolyte
* Batteries contain a corrosive acid
  - variety of toxic materials including mercury, lead, cadmium, and zinc
  - acid electrolytes
  - acid-based liquids, which helps create an electrical charge
  - acids or alkali, which can also cause corrosive lesions
  - caustic mixtures of chemicals
* Batteries contain chemicals considered hazardous to the environment
  - that are harmful to the environment when disposed of
  - corrosives
  - hazardous materials
  - heavy metals such as mercury, cadmium, and lead
  - hydrogen and oxygen, two flammable and explosive gasses
  - large amounts of lead and acid
  - lead and mercury that can contaminate potable water
  - lead, lead oxide, both with toxic heavy metal, lead
  - mercury, a dangerous metal
  - metals such as lead , copper or zinc
* Batteries contain sulfuric acid which can cause serious burns and blindness
* Batteries contain toxic materials - mercury and cadmium
  - metals such as mercury or cadmium
  - convert chemical energy directly to electrical energy
* Batteries convert chemical energy into electrical energy through reactions at the anode and cathode
  - corroding in landfills also leak silver, lead, nickel, and cadmium - all dangerous toxins
* Batteries create charge
  - electric charge
* Batteries create energy out of nothing
  - through chemical reactions
  - forces
  - small electric charge
  - voltage through a chemical process
  - develop heat when charging, as well as hydrogen gas
  - dissipate heat
  - do it chemically, chemical reactions produce the potential difference
  - emit explosive gases
* Batteries follow functional limitations
* Batteries generate direct current to power handheld items
  - hydrogen and can explode
* Batteries have capacity
  - density
  - differences
  - energy density
  - internal resistance
  - limited energy on one charge
  - little reserve capacity
  - low power
* Batteries have lower density
  - partial charge
  - includes sections
  - increase energy
  - lack the pumping-force needed to create dangerous currents in humans
  - leak much faster under higher than room temperatures
* Batteries lose charge
  - power when they're stored for a long time
* Batteries make electrons move in one direction producing a direct current
  - up a large portion of the size and weight of personal electronics
  - often fail in the cold
  - operate on the principles of oxidation and reduction
* Batteries power circuits
  - computers
  - electric circuits
  - machinery
  - motors
* Batteries produce current
  - electric current
  - electricity by passing electrons back and forth between two metal plates
  - enough electricity
  - heat energy
  - power as the acid leaves the electrolyte and enters the plates
* Batteries provide emergency power for lighting and doors
  - functions
  - high voltage
  - output voltage
  - require batteries
* Batteries store an electrical charge and furnish a current
  - electrical energy in the form of chemical energy
  - the electricity for future use in the home
* Batteries store the energy for today's electric vehicles
  - until it is needed
  - wind energy
  - supplies charge
* Batteries supply current
  - electrical power
  - tend to expend their charge fairly quickly
  - transform chemical energy into electrical energy
  - turn chemical energy to electrical energy
* Batteries use a chemical reaction to create current electricity
  - battery acid
* Batteries use chemical energy to create the electrical potential
  - reactions to produce electricity instead of heat
  - wear out, and smoke and carbon monoxide detectors save lives
* Many batteries fail prematurely, especially in hot, humid environments
  - run on chemical energy
* Most batteries absorb energy.
* Most batteries absorb enough energy
* Most batteries are chemical cells
  - small, round, and flat
  - can leak toxic heavy metals into the soil when discarded
* Most batteries contain acid electrolytes
* Most batteries convert chemical energy
* Most batteries create charge
* Most batteries generate energy
* Most batteries have a life span of three to five years
  - paste electrolyte
* Most batteries have lower density
* Most batteries lose charge
* Most batteries make energy
* Most batteries produce current
* Most batteries provide high voltage
* Most batteries supply current
* Most batteries use acid
* Some batteries are more temperature sensitive than others
  - can release flammable hydrogen gas
* Some batteries change chemical energy
  - feature a porous glass mat that encapsulates the plates
* Some batteries have life
  - poles
  - shelf life
* Some batteries operate flashlights
  - propellers
  - torches
* Some batteries provide electrical energy
* Some batteries run bulbs
* Some batteries use in circuits
  - electronic devices
  - many electronic devices
* Use a battery to generate a spark.
* cages for domestic egg-laying hens usually have no dust bathing substrate.
* contains acid electrolyte which is absorbed in the separator material
  - mercury which produces highly toxic mercury vapors under fire conditions
* crime and also the basis for a lawsuit as a civil wrong if there is damage
  - as well as a civil wrong
* involves physical violence against a person, but assault can be verbal.
* is an actual blow that results in physical injury
  - isolated from electronics, reducing damage in the event of a battery leak
* is the intentional and unpermitted contact with another
  - main cause of injury to women
* is the single major cause of injury to women, exceeding even automobile accidents
  - injury to women-more than rape, muggings or accidents combined
  - use of physical force against an individual
+ Battery recycling: Recycling :: Batteries
  * Battery recycling' is a name of the process of separately collecting such batteries so that they can be disposed of properly. Batteries contain metals such as lead, copper or zinc. In the form that is used in the batteries, these metals are very harmful to the environment - most are toxic. The part that cannot be extracted or re-used is dispoed in a for so that it is less harmful to the environment. For this reason, many countries have rules that say that a given percentage of all batteries must be re-cycled.
+ Battery, Battery sizes
+ Chemical cell: Chemistry :: Energy
  * A 'chemical cell' converts chemical energy into electrical energy. Most batteries are chemical cells. A chemical reaction takes place inside the battery and causes electric current to flow.
+ Potential energy: Energy :: Basic physics ideas :: Force
  * Food that we eat has chemical potential energy. Batteries also have chemical potential energy.
+ Remote control: Electronics
  * Infrared or radio signals are used to communicate with the devices. Batteries make remote controls and controllers work. Mostly AAA or AA size batteries are used.
+ Wet cell
  * A 'wet cell' is a cell that contains a liquid electrolyte. Most batteries have a paste electrolyte. Car batteries have a liquid electrolyte. They are inconvenient because the electrolyte can be spilled. Some early batteries had liquid electrolytes.