Crown cr430 6v flooded lead acid battery.
Vented lead acid batteries.
The short answer is your mechanic is giving you the straight story and you do need to vent these batteries.
Agm batteries are a type of valve regulated lead acid battery.
As the name implies this type of battery vents hydrogen continuously during normal float operation.
These batteries have a negative and a positive terminal on their top or sides along with vent caps on their top.
Type pp vented pasted plate.
Vented lead acid batteriesare commonly called flooded or wet cell batteries be cause of their conspicuous use of liquid electrolyte.
Lead acid has a moderate life span but it is not subject to memory as nickel based systems are and the charge retention is best among rechargeable batteries.
They need to be enclosed and vented to the outside to prevent this gas from being trapped and creating a hazardous environment.
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.
This vent is valuable because it gives a good amount of airflow to keep the battery compartment cool and vapor free.
High performance batteries are designed to give long services life.
Even though your batteries are normally sealed they actually do have a venting system integrated into the case top.
Such treatments are rarely if ever effective.
Epsom salts reduces the internal resistance in a weak or damaged battery and may allow a small amount of extended life.
Vented lead acid batteries are commonly called flooded spillable or wet cell batteries because of their conspicuous use of liquid electrolyte figure 2.
Most of the battery complies with bs 6290 din40738 and iec standard.
Agm batteries must still be vented.
Overcharging especially if the battery is old heavily corroded or damaged can produce h 2 s.
In the event of an overcharge condition it is possible for excess pressure to build up inside your battery.
These products are suitably used by utilities marine oil gas and petrochemical.
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.
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 battery.
While nicd loses approximately 40 percent of their stored energy in three months lead acid self discharges the same amount in one year.
