![]() The Polyvlies material on the surface of the positive plate guarantees that the EFB has a longer service life. EFB batteries were fitted to early Start Stop vehicles and are currently fitted to many entry level Start Stop vehicles as standard.ĮFB batteries are a further development of conventional lead-acid batteries. They are designed to provide many of the benefits of an AGM battery such as increased reliability and deep cycle capabilities without the high cost. Although AGM batteries still have “one-way plugs”, these must not be opened under any circumstances.ĮFB Batteries – Enhanced Flooded Batteries (EFB) are best described as a hybrid between wet and AGM batteries and are the first generation of Start Stop batteries. Water does not need to be, and must not be topped up. Modern batteries are completely maintenance-free. In a conventional SLI battery, this is closed with a cover with a labyrinth system which prevents the battery fluid from escaping and separates the liquid from gas.Įarly batteries had screw plugs which enabled them to be topped up with distilled water. The cells are contained in a casing which is made from acid-resistant plastic (polypropylene). This means that the battery is designed for a higher charge throughput (continual charging and discharging process). However, if the space in the cell is used for fewer, but thicker plates, the cycle stability is increased. ![]() ![]() Rule of thumb: The more plates which a cell contains, and therefore form a larger surface, the larger the cold start power (CCA) which the battery can deliver. However with increased technology there are more batteries options available and some are detailed below, you may find the modern technology more appealing and better suits your needs for your classic car. All traditional classic car batteries are wet flooded batteries and have been produced in this way for many years. The capacity and the cold start capability of the battery results from the number of plates per cell. Classic cars are also popular with 6V batteries and as such the above is similarly true, they consist of 3 cells connected in series, each with a nominal voltage of 2V, which results in a voltage of 6.36V when the battery is fully charged. Batteries have been produced in this way for many, many years.Ī conventional starter battery consists of 6 cells connected in series, each with a nominal voltage of 2V (volts), which results in a voltage of exactly 12.72V when the battery is fully charged. These must be kept upright to avoid spillage. In its basic form, this is a strong plastic (usually ABS) container which contains lead plates submerged in a dilute liquid electrolyte solution (acid). Wet Batteries – A traditional classic car battery is known as a wet (or flooded) battery. Unlike other types of battery (such as Marine batteries or Leisure batteries) which are designed to perform best under slow drain situations, a classic car battery must be able to produce a high burst of energy to engage the starter motor and turns the fly wheel which will allow the car engine to start.Īs the classic car battery is the heart of your vehicle’s electronics system, we recommend fitting the highest quality car battery that your budget will allow, thus getting the ultimate performance from your classic car over the longest period possible. A Classic Car battery is designed primarily for engine starting.
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