answersLogoWhite

0

Ventilation. Auto batteries out-gas hydrogen under certain circumstances, and it must have a way to escape the battery case. "Holes in the caps" would be an older style battery. Today, most batteries have a flat, narrow tube along the top that fufills that function.

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

Why do filing caps of car batteries have holes in them?

to vent the Hydrogen gas that is produced when the battery is being charged.


Is sulfuric acids in batteries?

Yes, it is. Sulphuric acid is in lead-acid batteries. The batteries which are very commonly used on vehicles. Unlike most 'dry' batteries used today, the acid is in liquid form in the battery (It is a 'wet' battery) so it can be dangerous if someone upset one. The strong acid may leak out through the vent holes at the caps of each cell.


What is a car battery made of from outside?

charge batteries with caps in place.most U.S.A batteries are made with flame.


How do you charge 12 volt battery with caps on or off?

All lead acid batteries are always charged with the caps on. What this prevents is the acid accidentally boiling up an out of the cell and doing damage to surrounding equipment. When a car battery in a vehicle is charging when the engine is turning over, the caps remain on. This procedure should be no difference when the battery is on a plug in battery charger, the caps remain on. There are vent holes in the caps which allow any built up pressures to release.


What is the difference between maintenance batteries and maintenance free batteries?

Maintenance free batteries have no filler caps and you do not need to check the level nor add distilled water.


How does liquid get into gel caps?

Liquid is placed into gel caps using a capsule filling machine. The machine holds the empty gel caps in place while a liquid filling nozzle dispenses the desired amount of liquid into each capsule. The filled capsules are then sealed to prevent leakage.


What is the brass cap on a battery?

There are no brass caps on any of the numerous batteries I have seen.


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.


Why are email addresses always in small caps?

All email addresses are in small caps, as are all internet addresses. If you are typing internet or email addresses in large caps, you are in fact "doing it wrong".


What section in the font diallog box is the small caps?

The small caps option in the font dialog box can typically be found under the "Font" section or tab. When selecting a font, there is often a checkbox or dropdown menu specifically for small caps formatting.


Are small block and big block distributor caps the same for HEI caps?

Actually the complete distributor will fit from the small block to the big block.


Small caps and Superscript are examples of what?

Font Effects