Bahco BBT80 Original Instructions Manual page 14

GLOSSARY
What is a GEL battery?
A gel battery is a lead-acid electric storage battery that:
■ is sealed using special pressure valves and should never be opened.
■ is completely maintenance-free.
■ uses thixotropic gelled electrolyte.
■ uses a recombination reaction to prevent the escape of hydrogen and oxygen gases normally
lost in a flooded lead-acid battery (particularly in deep cycle applications).
■ is non-spillable, and therefore can be operated in virtually any position. However, upside-down
installation is not recommend-ed.
■ Connections must be retorqued and the batteries should be cleaned periodically.
What is an AGM battery?
An AGM battery is a lead-acid electric storage battery that:
■ is sealed using special pressure valves and should never be opened.
■ is completely maintenance-free.*
■ has all of its electrolyte absorbed in separators consisting of a sponge-like mass of matted glass
fibers.
■ uses a recombination reaction to prevent the escape of hydrogen and oxygen gases normally
lost in a flooded lead-acid battery (particularly in deep cycle applications).
■ is non-spillable, and therefore can be operated in virtually any position. However, upside-down
installation is not recommended.
■ Connections must be retorqued and the batteries should be cleaned periodically.
What is a VRLA battery?
Valve Regulated Lead Acid Battery – This type of battery is sealed Maintenance Free with a
"Bunce" Valve or Valves in the top of them that opens when a preset pressure is realized inside
the battery and let's the excess gas pressure out. Then the valve resets itself.
What is a SLI battery?
These initials stand for Starting, Lighting and Ignition, which are the three basic functions which a
battery has to perform on all normal vehicles. Batteries given this description will have been
specifically designed for service on cars and trucks within a voltage controlled electrical system.
Those SLI batteries which are intended for heavy haulage vehicles fitted with large diesel motors
may often be called COMMERCIAL batteries. They have to be much more powerful and more
robust than batteries intended for cars.
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