midlifecrisis
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AGM stands for Absorbent Glass Mat and refers to its construction, it's nothing to do with being stop-start as some people seem to think above.
Basically, rather than acid sloshing around between the lead plates, it's held in a series of thin fibreglass mat and lead sandwiches.
FYI gel batteries are similar to the old acid one but silica (sand) is used to thicken the acid electrolyte.
The VRLA stands for Valve Regulated Lead Acid, which means that it has a valve to vent of the hydrogen when charging. Hence the clear plastic tube...
Lesson over, carry on...
Basically, rather than acid sloshing around between the lead plates, it's held in a series of thin fibreglass mat and lead sandwiches.
FYI gel batteries are similar to the old acid one but silica (sand) is used to thicken the acid electrolyte.
The VRLA stands for Valve Regulated Lead Acid, which means that it has a valve to vent of the hydrogen when charging. Hence the clear plastic tube...
Lesson over, carry on...