An AGM marine battery is a sealed lead-acid battery that makes use of an electrolyte suspension in between lead plates, instead of the liquid-based system utilized in other types of batteries. This allows for much better gas recombination and implies that these batteries do not call for routine maintenance or filling.

AGM stands for “Absorbent Glass Mat”, describing the separator discovered in between the negative and favourable plates. This glass floor covering includes fine fibreglass hairs that are woven with each other and also soaked with a sulfuric acid option, which works as an electrolyte. These separators stop the plates from touching each other but enable ion exchange between them.

These types of batteries are likewise known as “starved electrolyte” batteries since they are made to reduce the quantity of liquid used in the system.

In typical batteries, oxygen relocates to home plates including lead dioxide, while hydrogen ions move to home plates consisting of pure lead.

In AGM batteries, nevertheless, there is no complimentary electrolyte moving around in your battery. Instead, oxygen particles relocate with the glass mat from one side of the plates to the other. As this takes place, hydrogen ions flow in the opposite direction through an electrochemical procedure called “electron exchange”.

The key advantage of AGM batteries for marine usage is that they can soak up higher amounts of vibration than other types of batteries. This makes them suitable for smaller sized watercraft that might experience regular turbulence from waves or high winds. They offer more consistent power output in time than wet cells or gel cells.