Absorbent Glass Mat (AGM) batteries are a type of valve-regulated lead-acid (VRLA) battery that utilizes a fiberglass mat to contain the electrolyte. This design offers several advantages, including spill-proof operation and increased resistance to vibration. Their performance in low temperatures, however, requires careful consideration due to the chemical reactions within the battery being temperature-dependent.
Maintaining reliable power in cold climates is crucial for various applications, from automotive starting to off-grid energy storage. The ability of these sealed lead-acid batteries to function effectively at low temperatures is therefore a significant factor in their suitability for such uses. Historically, flooded lead-acid batteries have dominated cold-weather applications, but AGM technology offers a robust, maintenance-free alternative with improved cold-cranking amps (CCA) compared to traditional flooded counterparts of similar size.