![]() This means they are less likely to be affected by extreme weather conditions and higher charge rates. ![]() The use of calcium also cuts down on the loss of charge from the internal chemical reactions required in the lead-antimony self-discharge. The benefits of replacing antimony in the plates include improved resistance to corrosion, no excessive gassing and reduced water usage. RAC Batteries are fully sealed and maintenance free. This gassing phenomenon causes water loss in other batteries, resulting in the need to periodically add water to maintain the battery’s condition. This action during charging promotes the breakdown of water and generation of hydrogen. In positive grids containing antimony, the process of conductivity means some of the antimony is released from the corrosive product of the grid and transferred to the negative plate. These grids require a lot of electrical conduction for optimum performance but when compared to calcium, they are roughly 3-10 per cent less conductive. What the added antimony does is increase the electrical resistance of the alloys and subsequently the grids produced from them. The two most common alloyed metals used are antimony and calcium. Battery plates are made from lead alloy, however a pure lead grid structure is not strong enough to hold the battery material vertically, which is why other properties must be added to increase the mechanical strength of the lead. It is also why replacing your battery with the correct type is essential to maintaining its performance.Ĭalcium batteries are lead acid batteries that have small amounts of calcium added to the plates. Vehicle owners new to the Stop-Start feature may be concerned about the impacts of it on the battery, however, batteries that are required for this technology to function correctly are built to tolerate constant stopping and starting. If in doubt, check with us before ordering a new battery.īoth AGM and EFB batteries are designed for the frequent cycling required when a vehicle is equipped with Stop-Start technology. For example, vehicles with Stop-Start technology may use one of these batteries. Your vehicle will only require an EFB battery if it currently has one. This means the battery recovers more quickly, as its application needs to handle heavy-duty, cyclic, Start-Stop applications. EFBs are wet-filled and similar to standard flooded batteries, however, there are differences that give these batteries enhanced cycling abilities and improved charge acceptance. It is considered an entry level battery for use in cars with this technology. Because an AGM is fully sealed it is also maintenance free.Īn enhanced flooded battery (EFB) can also be used in cars that feature Stop-Start technology.Deep-cycle AGMs are safer to install in the passenger compartments of vehicles because they’re sealed and don’t produce harmful fumes or gases. ![]() Dual-purpose AGMs can function as both a starting battery and as an accessory battery, so they can support a multitude of new accessories and car technologies.AGMs are better suited to the modern car charging system.AGMs have several advantages:ĪGMs produce higher amp power output for the same size of calcium battery, meeting the increasing demands of car electrics and technologies. If your car currently has an AGM battery, then it’s important that you replace it with an AGM battery to ensure your car’s health is maintained. Some AGMs are dual purpose so they can also start a vehicle's engine AGM batteries ensure that when your car has stopped, it will rapidly and seamlessly start again when you’re ready to move off.ĪGM deep cycle batteries are also safe to install inside the cabin of a vehicle to run accessories, as they don’t release harmful gases. Where Stop-Start is enabled, the vehicle’s engine cuts out instead of idling when the vehicle is stationary in order to save fuel. For example, the Stop-Start technology featured in many modern vehicles requires a battery with a higher output and AGM batteries excel in this regard. ![]() AGM batteries are designed to cope with these higher energy drains and demands. Many of the technologies and accessories now included in modern cars put extra demands on their batteries. An AGM battery is different to regular batteries because the electrolyte liquid (battery acid) is absorbed into the glass mats like a sponge instead of the sulphuric acid being free floating as in a conventional battery. In technical terms AGM stands for Absorbed Glass Mat. Here's what they are, how they work and why you might need one. What's an AGM battery, what's an EFB battery - and more importantly, what's the difference? ![]()
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