Lead Acid Batteries

By : Hesti Yanuarti

Lead Acid Battery

With the increase in portable electronic and electric devices, the need for batteries has grown geometrically through the years, with no end in sight. Lead acid batteries are all made up with the same components the positive plates coated with lead dioxide and the negative plates of soft spongy lead.

Two basic types of lead acid batteries were created that survived the tumults of economic and consumer demands. These were the VRLA and SLA batteries. VRLA stands for valve regulated lead acid batteries, whereas SLA is sealed lead acid. The valve regulated lead acid battery is a rechargeable battery just like any other lead acid batteries.

The difference is the valve regulated lead acid batteries does not water added. Instead it is based on the absorbed glass mat technology with calcium grids. Sealed acid lead batteries were created around 1975 for the purpose of having a power source that was maintenance free while also being economical for both the manufacturer and consumer. Amongst features beyond the sealing of the lead electrolyte from spillage was the formation of special release valves to allow dangerous gas build-up to release safely.

Using sealed lead acid batteries quick capacity test can give you the most up to date diagnostics regarding the capacity of your battery within seconds. This can tell you if you need to charge your battery a bit longer or even if you have overcharged your lead acid batteries. One of the best features of these two sealed lead acid batteries, when they are rechargeable, includes an excess voltage safety mechanism which disallows the battery’s explosive gas from becoming too great in quantity. However, self discharge is still a fact of life, leading between 35 and 45% loss per year. So rechargebles are not as great as first thought.

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