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Hydrogen is discharged during the charging process of lead acid batteries, sealed batteries are a misnomer, they are only sealed against liquid leakage.

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Q: What gas is leaked from sealed lead acid batteries?
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How do you replenish acid in batteries?

On standard unsealed lead-acid batteries, just unscrew the caps and refill if needed. This cannot be done on sealed lead-acid or gel cell lead-acid batteries. Dry cell batteries don't contain acid.


What is the difference between a lead acid wet battery and a lead acid dry battery?

one is dry one is wet... wet once are used for car batteries and dry lead acid batteries the once you put in your remote lets say. I think the dry lead acid battery is maintenance-free and sealed batteries, and the wet batteries is the traditional batteries which needs more maintenance.


Are lead acid batteries installed in cars in factories?

no lead acid batteries are not installed in factories only acid batteries are!!


What are lead-acid car batteries made from?

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What are the advantages of nickel cadmium alkaline wet cell batteries over sealed lead acid dry cell batteries?

Please see this link: http://en.wikipedia.org/wiki/Aircraft_battery


What do automobile batteries contain?

Common automobile batteries are Lead/acid (dilute sulphuric acid) batteries.


How is sulfur used in your everyday life?

its used in gun powder,fireworks,lead acid batteries,and fertalizers its used in gun powder,fireworks,lead acid batteries,and fertalizers its used in gun powder,fireworks,lead acid batteries,and fertalizers its used in gun powder,fireworks,lead acid batteries,and fertalizers


Is sulfur every used in batteries?

Lead-acid storage batteries contain sulfuric acid.


What compound do car batteries use?

Almost all car batteries are "lead acid" type batteries. These type of batteries use thin lead plates and are immersed in Sulfuric acid which acts as an electrolyte.


Is lead acid batteries harmful?

Yes, they contain sulfuric acid.


What kind of batteries are used in submarines?

They use batteries quite similar to car batteries. Sealed lead-acid batteries. They are huge. Bigger or smaller subs will of course have different sizes and amounts. Batteries produce waste gas and hydrogen when charged or discharged and must also be ventilated regularly to prevent build-up.


Do they make lithium ion batteries for wheelchairs?

yes they do, they are standard on most current models because they are smaller and last longer than lead-acid batteries, not to mention lead-acid batteries are dangerous if tampered with.