The following graphs come from the BMW-Ford presentation at the ELBC and show how the dynamic charge acceptance of an AGM battery degrades over time using their new testing protocol. The graph on the left shows what happens if the generator is disabled for seven seconds after restart to maximize the engine power available for acceleration. The graph on the right shows what happens if the generator kicks in immediately. The downward curving blue lines show the amount of current the battery can accept as the number of stop-start cycles increases. The upward curving black scatters with red overlays show the time required for the battery to regain an acceptable state of charge. The simple summary is that both batteries performed terribly and lost most of their dynamic charge acceptance capacity in a matter of months.