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Understanding the Types of Lead-Acid Batteries Lead-Acid Batteries are a well-understood technology and widely used for solar and off-grid backup energy storage. A lead acid battery generates energy through chemical reactions, which are reversible. However, if the batteries are not handled properly, there is degradation in the battery performance as the physical damage can affect its internal structure.

Leading China Battery Manufacturers claim that lead-acid battery is often confused as a separate technology altogether. However, the majority of batteries found in most modern day vehicles are lead-acid, including AGM. Absorbent Glass Mat (AGM) batteries, along with Flooded (or Wet Cell), Gel Cell, and Enhanced Flooded Batteries (EFB) are sub-sets of lead-acid technology. The two most common types of battery are wet cell and absorbent batteries. The first type requires regular refilling with distilled water, whereas the sealed type is maintenance free. ∑

FLOODED OR WET CELL BATTERIES – They are the most common and economical leadacid chemistry. They have a liquid electrolyte solution, that is why they are known as wet. Now, this liquid requires regular maintenance after charging and discharging cycles and also of the electrolyte every 3-6 months. If a flooded battery is accidentally

overcharged, additional electrolytes can be added to the battery, making it more resistant to improper charging. Care must be taken to avoid coming in contact with the battery acid and must be installed in the vertical position. ∑

ENHANCED FLOODED BATTERY – It is an economical battery which is usually used in micro-hybrid vehicles. It is designed in a way to withstand the cyclic demands of startstop vehicles. They are similar to flooded or wet cell batteries in a way that they too have a liquid electrolyte solution but designed to handle two times higher cycling endurance and roughly 16 percent increase in duty cycle. Despite its increased performance for start-stop applications, EFB batteries are charged similar to standard flooded batteries, and installed in the vertical position.

ABSORBANT GLASS MAT BATTERY – They are the latest technology of non-spillable batteries developed by China battery manufacturers. AGM batteries, instead of using a gel agent, use a fiberglass-like separator that absorbs the electrolyte in place. The result is they perform far better than the Flooded and Gel Cell batteries because they have a low internal resistance, cycle down to 80-percent depth-of-discharge and charge up to five times faster. Likewise the Sealed Lead-Acid batteries, AGM batteries are sensitive to improper charging.

ADVANCED ABSORBANT GLASS MAT BATTERY – Advanced absorbent glass mat battery commonly known as AGM+ batteries are much more similar to the traditional AGM batteries. But there exists one difference, they have higher cycling endorse and lower internal resistance. These types of batteries are ideally used for micro-hybrid, start-stop vehicles.

All in all, the most important aspect of the lead-acid batteries as recommended by China battery manufacturer is the physical care of the batteries as their both charge and discharge along with the mechanical treatment play a vital role in the battery longevity.

Understanding the types of lead acid batteries