The Lifeline GPL-8DL is a 12V 250Ah (C/20) AGM battery in a BCI group 8D case.
Dimensions are 20.76”L x 8.70”W x 9.76”H and 156lbs (528mm x 260mm x 248mm and 70.8 kg)
Lifeline AGM batteries are among the best lead acid batteries available.
They are manufactured in California by Concorde Battery. When you choose Lifeline, you get high quality construction designed to last many years in deep cycle usage.