Electricity wasn’t invented – it was discovered because it naturally exists in the world. Neither was it only one person to discover and explain electricity. Over centuries many scientists have contributed to the insight – knowledge that has changed electricity from remarkable phenomenon to an indispensable part of our life – and probably also our future.
Around 600 AD the Greek philosopher Thales from Milete discovered that when amber is rubbed against cloth, lightweight objects will stick to it. The friction had generated static electricity. The amber stone is called electron in Greek. Hence the name electricity. For the next 2400 years scientific research would focus on static electricity.
It was not until 1797 that Alessandro Volta created his famous Pile and entered the field of electrodynamics. From then theoretical interest in static electricity was lost and the 19th century would bring us a multitude of practical applications of electricity instead. To read more please expand the headers below.
With the development of the secondary battery the need arose for a better power source than a primary battery. This development had already been started by Michael Faraday with his discovery of magnetic induction.
To reduce water consumption and self-discharge, the antimony content of the grid is reduced from 12% to 1-3%. These low-antimony batteries are sometimes called maintenance-free to or DIN43539/2 or EN50342-1. However, the standard EN50342-1 refers to a low water loss battery – when the water consumption is less than 4g/Ah Ce. Low Maintenance battery is therefore the better term, avoiding confusion with sealed maintenance free batteries (MF and VRLA).
Oddly enough, recombinant batteries are seldom referred to as such, but with the term VRLA (Valve Regulated Lead Acid) or SLA (Sealed Lead Acid). These terms refer to the safety valve and the sealed lid. Both elements are important of course but only so because they allow the recombination process to take place. The full name of a VRLA battery should be: Valve Regulated Recombinant Lead Acid Battery.
The development of a battery that would not spill electrolyte when damaged or falling over began shortly before the second world war in Germany. In 1957 Otto Jache filed on behalf of the battery factory Sonnenschein, the patent for an immobilized electrolyte by the addition of fumed silica, which will thicken the electrolyte into a gelled substance, much like petrol jelly.
A further step development AGM is Odyssey® TPPL or Thin Plate Lead with flat 99.99% pure virgin – not alloy. Pure lead is made thinner, so it will fit the battery. More battery plates mean more plate surface area, which therefore means more power – twice as much as normal batteries. In fact, these batteries are capable providing engine cranking pulses in excess 2250 amps for 5 seconds – double, triple that equally sized conventional batteries, even at very low temperatures. They can also handle 400 charge-discharge cycles to 80% depth of discharge.