- With regard to flooded battery that is seen as the traditional startup, tractor and deep cycle style battery. As its name, this liquid electrolyte is free to move in the cell compartment. When using this type, you will access to the individual cells and add distilled water as the battery dries out. In general, it is usually used for engine starting and deep cycle designs. The typical absorption voltage ranges from 14.4 to 14.9, float voltage from 13.1 to 13.4 volts.
- How about Sealed? This type of battery has some differences of constructions from others. Especially, the slight modification to the flooded style does not allow users to have access to the cell compartments. Thus, the internal structure is still basically the same as this type. The biggest difference is that we need to ensure there has enough amount of acid for battery to sustain the chemical reaction under normal condition. Sealed batteries have many types including lead acid batteries which users use for engine start and limited starting/deep cycle applications. The voltage of this type ranges from 14.2 to 14.7 volts while the typical float voltage comes around 13.2 volts.
- VRLA means that Valve Regulated Lead Acid battery that is seen as one of lead acid batteries. The mechanism of this model gives users a safe escape of hydrogen and oxygen gasses during charging. And the absorption voltage of VRLA is from 14.2 to 14.5 with the typical float voltage range from 13.2 to 13.5 volts. Thus, it sounds not so complicated to have a battery charger for this type when there are not many notifications to recharge it.
- AGM is one of the most popular batteries in the market now. AGM stands for Absorbed Glass Matt battery which can be found in many engines including boats, ships, motors and more. This construction allows the electrolyte to be suspended in close proximity with plates that are derived from active material. In general, this type of battery enhances both the discharge and recharge efficiency. AGM battery has basic features of Sealed VRLA batteries but more advanced design. It is effectively used for engine starting, power sports, deep cycle, storage and solar batteries.
GEL battery is as same as the AGM model because the electrolyte is suspended. However, the different technique of them is that the AGM battery is seen as a wet cell. Meanwhile, the electrolyte in a GEL has silica that is used for set up or stiffen function. The recharge voltages of this type of cell are lower than other types of lead acid battery. They are claimed to be the most sensitive cell in terms of adverse reactions to over-voltage charging. GEL battery is strongly considered in very deep cycle application. Additionally, it may last a bit longer in hot temperature applications. When buying recharger for this battery, you need to remember that the incorrect battery charger will lead to a Gel cell battery with poor performance and premature failure. Thus, despite the convenience and function, it is important to find a right battery charger for them. Like above products, the absorption voltages of Gel battery range from 14.0 to 14.2 volts.