I received this PM from Brian BP.
Originally Posted by Raz
Since the electrolyte in an AGM is a gel, equilizing is not necessary
While an AGM battery may not need (or should not have) an equalizing cycle applied (check with the manufacturer), it does not have gelled electrolyte. While both gel and AGM batteries are sealed lead-acid designs, the electrolyte is handled very differently. The electrolyte in an AGM battery is liquid, absorbed into a mat of glass fibres.
My quote was lifted from a comment I made about an AGM failure on an early Parkliner
. While AGM batteries and Gel batteries are different I'm not sure the difference in construction is important. What is important is the risk of thermal runaway due to improper ventilation and charging.
Here is the Parkliner battery
thread for those that are interested. Note, while it has been edited by the powers that be, the pictures tell the story.
Smoking Batteries (was: Battery problem in our Parkliner)
Thermal Runaway is a positive feedback scenario where an increase in current causes an increase in temperature which causes an increase in current which causes an increase in temperature..... While I'm sure there are some who could explain it in more detail, what's important is the conclusion. All lead acid batteries are potentially dangerous and should be treated as such. Raz