Mopar restoration battery charging question

[Barracudadan]

My battery is in need of a charge, should I pop off the red caps to vent the battery while charging or is this not necessary? Do the caps even pop off? I figured I should ask before I gnarled them up with a pair of pliers.

[Topcat]

Each cap should have a small vent hole on each one.

If they are the type that unscrews, loosen them but not off all the way.

[ToxicWolf]

I have a yellow top in my 70 Challenger and it is a "maintenance free" which means the tops DO NOT come off. You need to know what kind of battery you have.

added: Topcat is right. Check for vent holes. Cross posted with him.

[Topcat]

If this is the new reproduction type OEM looking battery, then you don't need to do anything but charge it.
These are basically an AGM dry cell battery inside of a wet cell appearance battery container.

AGM (absorbant glass mat) also known as dry cell batteries have vents built into it.

[moparleo]

Of course we must be aware of all of the obvious things like not charging when in the car. Making sure there is plenty of ventilation as charging a battery will generate hydrogen gas which is explosive. Think the Hindenberg. Always connect the positive side first and make your final connection away from the battery , incase you generate a spark. Other than that use a good quality Volt/ohm meter to check before and after readings. Battery is not charged fully until 12.6 Volts or higher. Charging a battery is like cooking a thick steak. Cook it Low and slow.
 Other wise it is like cooking too fast and hot, which is burnt on the outside and raw on the inside. Low amperage for several hours. If this is needed because the battery drew down while not in use, you need to fully charge the battery before you do any diagnostics.  Clean and tight.