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Exactly. They have fiberglass mats between the lead plates, and just enough electrolyte to fully wet the mats, but no extra. This means there is no free liquid, so they can't spill acid even if they get broken. When charged per the manufacturer's specs, gasses are reabsorbed as fast as they...

Right hpcs, I was thinking of Volts per battery. The float voltage for a 12V AGM is usually around 13.7, so for two in series it's 27.4V. If you get much higher, you get into the bulk charging mode, and unless you're using a smart charger, that will cause loss of electrolyte once the batteries...

They're great batteries, but very sensitive to overcharging. Since all their electrolyte is absorbed in the glass mats, they don't have any to spare, and any venting while charging will wreck them. You need to follow the manufacturer's charging specifications carefully. If the 12V onboard...

Very nice work.