I picked up a car jump starter battery on special the other day from a local retailer. Seems to be quite good: 900amps peak draw and 19ahr, in a robust case with a led light and led charge indicator. It was advertised as an AGM battery which sounded good as these are supposedly non-spillable, more resistant to vibration and hold their charge better, and twice the price of a standard SLA battery.
When I opened the case to see the battery it was stamped with FM12170B Sealake, and marked as a SLA. I have tried to google for the specs on this battery and no where can I find reference to it being an AGM (although a AGM is a SLA battery).
Does anyone have any idea if this is an AGM battery or is it a case of miss leading advertising? I can’t hear any electrolyte sploshing around inside so it could well be an AGM.