Hybrid
batteries are type of battery which combines the advantages of both maintenance
free and low maintenance battery. Hybrid battery can withstand seven deep
cycles without losing its charge retaining capability. The grid construction of
hybrid battery is special and it contains somewhat 2.76% antimony as alloy in
the positive plate and calcium as alloy in the negative plate. Such formulation
of the battery plate allow it to withstand the deep cycle performance and also
it provides better performance on cranking. The use of antimony in positive
plate as alloy reduces grid growth due to which the plates shorting together
and corrosion also. Another material lead calcium in positive plates producing
less gasses than conventional batteries are producing.
Hybrid battery pack |
There is
another difference of these batteries manufacturing that their plates have lug
which are located very close to the center of the grids. Another difference is
the horizontal and vertical grid bars are arranged in radial shape. These two arrangements
the center lug location and the radial grid bars design makes the plates less
resistive and provides shorter path to the current produced by the battery.
This makes the battery producing and delivering more current at faster rate.
In this kind
of batteries glass separators are used which are coated with resin. Glass separators
have low electrical resistance and high chemical contamination and less
reaction with chemical. They have prolongs life and strength. Such a
construction of the battery provides more battery life and much better cranking
performance.
Some people
confuse hybrid batteries with batteries used in hybrid vehicles. This point
must be cleared that hybrid battery in this article don’t mean the battery that
is used in hybrid vehicle instead this is a type of battery which is the
improved form of sealed lead acid maintenance free battery and the low
maintenance batteries.
Although hybrid
vehicles do used such kind of batteries as their battery bank but that is not a
must. Now a days an new kind of battery have been invented by two scientists
which have a very prolonged life or about 20 years with very good charge
capacity to weight ratio. These batteries have charge discharge cycling
expectancy of 10,000. These two scientists have been awarded with Nobel Prize
for their invention.
Hybrid battery cell |
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