At the time we decided to sell the 12Ah LiFePO4 battery packs this spring we made mention that there was a possibility that even though there were balanced and delivering capacity when we shipped them, that there was a chance that over time the packs would come unbalanced. Well it turns out that even though a number of the packs have been performing well, there are indeed quite a few that are gradually going down in available capacity because of inadequate cell balancing from the BMS circuit. We have been working very hard to try and get an improved replacement BMS circuit for these packs, and it looks like that will finally be coming toward the end of August.