[jmacstack]

Hi Clarke, I have Werker, Part # 12V215S. 228A.H. @20Hr, 75 amp rating, 115 min. They are not 8D. They are a lot taller than 8D's. I also have a new Progressive Dynamics charger. I believe it is the 9280 model. I cannot get a full charge out of the current batteries nor do they stay charged. I get about 7 hours of use and thats when I'm sleeping, and then they read below 12volts which is not good. Batteries plus tested them and they said they are fine. My hygrometer as well as others, says these batteries are no good. Steve, I will continue to research and thanks for the heads up on the Charge Voltage.