BATTERIES DESTROYED? (FOLLOW UP)

It is clear we have not destroyed our house batteries. We just wasted a bit of their life. If you believe the following graph, you can predict new Lifeline AGM batteries will perform through more than 300 complete discharges:

You can see AGMs perform much better than GEL batteries. You can predict a thousand cycles of 100% charged to 50% charged (100% to 50% use, or recharging before or when batteries fall to 50% charged, is considered best practice). For us this would be well over three years of full time cruising. For some it might be ten years of seasonal cruising.

In any event, our anxiety about whether we destroyed our batteries has quelled. For more about Lifeline batteries, see http://www.lifelinebatteries.com/.