what is an agm car battery

An AGM (Absorbed Glass Mat) battery is a type of lead-acid battery that is sealed, spill-free, and maintenance-free. The battery acid inside is absorbed into fiberglass mats instead of sitting as a free-flowing liquid. AGM batteries were originally developed in the 1970s for telephone boxes and computer rooms, and their sealed design makes them non-spillable, making them ideal for onboard power in fighter planes, submarines, and motorcycles. AGM batteries are designed to deliver a lot of amps even when the engine is off, and they can deliver a steady stream of amps and still give a big burst. They are the best car battery for vehicles with auto start-stop engines because they can deliver deep power and still start a car engine. AGM batteries are also quickly becoming one of the most common batteries on the road, with more than half of new vehicles sold after 2019 requiring an AGM battery because of their electrical power needs. AGM batteries hold their charge well and are less likely to sulfate when compared to regular wet cell batteries, making them an excellent choice for vehicles that require off-season storage. AGM batteries are often found in off-grid power systems, including environmentally friendly renewable energy systems like wind and solar power, and they are also great for electric vehicle service, uninterrupted power supply systems, robotics, and some ATVs.