The Most Common Classification In Sealed 12v Battery

  •   There are many variations of lead-acid batteries. Each is designed for its own specific application and has a specific discharge and charging characteristics. These battery types are specifically designed for a specific set of end applications.

      It is important to choose the correct lead-acid battery for your specific application. Otherwise, it may reduce performance and cause irreversible damage to the battery in some cases, resulting in a greatly shortened overall service life.

      Generally speaking, lead-acid batteries can be divided into two categories: full (or wet) batteries and maintenance-free sealed lead-acid batteries (SLA).

      The lead-acid battery is full

      Full-liquid lead-acid batteries are the most common type of lead-acid batteries and are widely used in the automotive industry. They provide the most cost-effective solution of any lead-acid battery type because of the lowest cost per ampere-hour.

      There are two styles of modern wet batteries. Easy to maintain, no maintenance required. Ordinary fully charged batteries require extra attention and regular maintenance. These methods include watering, equalizing charging, and keeping the terminals clean. Submerged batteries need to be installed in the correct way and are prone to overflow.

      Transporting lead-acid batteries filled with water presents its own challenges. Lead-acid batteries are classified as "dangerous goods", require very special transportation methods, and can only be transported with approved transportation and courier companies certified for dangerous goods.

      Sealed 12v Battery-sealed lead-acid battery

      Commonly referred to as valve-regulated lead-acid (VRLA) or sealed lead-acid (SLA). There are several different formats for SLA batteries. Their main manufacturing processes (including the number of plates and plate thickness) determine their designated end-user applications. SLA batteries are often not as easily sulfated or degraded as wet batteries, so they are considered the safest lead-acid batteries.

      Two main types of lead-acid batteries (SLA) can usually be found. AGM (absorbent glass matte) and Gel Cell (gelled electrolyte).

      AGM sealed lead-acid battery

      Among the valve-regulated sealed lead-acid varieties, AGM batteries offer the best price. The AGM sealed lead-acid battery uses an Absorbent Glass Matte (AGM) process, which is superior to traditional overflow technology. The fine, highly porous ultra-fine fiberglass separator absorbs electrolyte and improves efficiency by reducing internal resistance, thereby increasing capacity. The lower internal resistance also means that the battery can be charged much faster than traditional fully charged or wet lead-acid batteries. AGM batteries can provide greater capacity in smaller case sizes and can be side-mounted and shipped using standard transportation procedures.

      AGM batteries are used in many applications and are commonly used in UPS, alarm, and telecommunications industries, golf carts, and trolleys, motor vehicles, high-performance cars, etc. As always, it is important to ensure that you choose the right AGM battery for your application. Although the voltage, capacity, size, and rating across the entire range may be very similar, each AGM battery has a specific application that should be used.

      Gel seal lead acid type

      A common misconception is that all "sealed" lead-acid batteries are GEL. Gel VRLA batteries contain different gel electrolytes from similar batteries of AGM. Mix sulfuric acid with silica fume to make the resulting substance gel-like and immobile. In this way, lead-acid battery products that are completely maintenance-free and hard to leak can be produced. Unlike refillable or wet lead-acid batteries, GEL batteries do not need to be kept upright and can be transported using standard transportation procedures.

      GEL’s inherited design reduces electrolyte evaporation, overflow, and subsequent corrosion problems, which are common in flooded or wet batteries. GEL batteries have greater resistance to extreme temperatures, shocks, and vibrations. They can withstand over-discharge, which usually causes irreversible damage to overflow batteries and certain AGM batteries. They are ideal for applications requiring constant currents, such as golf carts, mobility, power banks, and RV power bank applications.

      GEL is usually much more expensive than its AGM and Flooded products. Their discharge rate is very low (1% per month), but they require a specific charging method and need to be charged with a GEL dedicated battery charger.