My engine bank batteries....2 8D Interstate flooded cell batteries.....are 4 years old and going strong. Not even a hickup. I have Power Pulses hooked up to each of them. I have 2 8D Interstate flooded cell batteries for my house bank and they are also 4 years old and going strong. Also have a Power Pulse hooked up to them. That combined with using a Progressive Dynamics charge/converter with 3 stage charging plus an anti sulfating mode. Check the water level once and while. Only isolate the batteries when in storage. Haven't had the coach in storage for 30 months now.....been living in it for that length of time.
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