Vented Lead Acid Batteries

They are maintenance free in the sense of not requiring the addition of water to offset hydrogen gas released during the charging process.

Vented lead acid batteries.

Agm batteries must still be vented. As the name implies this type of battery vents hydrogen continuously during normal float operation. Since these are stored inside your vehicle you run the risk of inhaling dangerous battery acid vapors. These products are suitably used by utilities marine oil gas and petrochemical.

They need to be enclosed and vented to the outside to prevent this gas from being trapped and creating a hazardous environment. Chemical additives have been used ever since the lead acid battery became a commercial item to reduce lead sulfate build up on plates and improve battery condition when added to the electrolyte of a vented lead acid battery. High performance batteries are designed to give long services life. Type pp vented pasted plate.

These batteries have a negative and a positive terminal on their top or sides along with vent caps on their top. As long as a vent is present and operating properly this should not present an issue. Two compounds used for such purposes are epsom salts and edta. Deteriorated old or damaged lead acid batteries should be removed from service as damaged batteries are much more likely to be associated with production of h 2 s.

The short answer is your mechanic is giving you the straight story and you do need to vent these batteries. In the event of an overcharge condition it is possible for excess pressure to build up inside your battery. While nicd loses approximately 40 percent of their stored energy in three months lead acid self discharges the same amount in one year. Epsom salts reduces the internal resistance in a weak or damaged battery and may allow a small amount of extended life.

Flooded lead acid batteries release toxic hydrogen gas when charging. Vented lead acid batteriesare commonly called flooded or wet cell batteries be cause of their conspicuous use of liquid electrolyte. Vented lead acid batteries are commonly called flooded spillable or wet cell batteries because of their conspicuous use of liquid electrolyte figure 2. Overcharging especially if the battery is old heavily corroded or damaged can produce h 2 s.

Even though your batteries are normally sealed they actually do have a venting system integrated into the case top. Agm batteries are a type of valve regulated lead acid battery. Vented lead acid battery. Such treatments are rarely if ever effective.

Crown cr430 6v flooded lead acid battery.