I have a bit of a concern about the life too, I don't think they are going to be anything like as good as A123, but those are just outstanding. sadly not really an option at the moment. The cycle life quote I was give seems a bit low compared to other LiFePO4's but it is hard to compare without all the detailed conditions. However, I think it is good that I was obviously given real figures rather than just made up headlines.
400 cycles would be about 2 years use, and if they are still giving over 90% capacity at that point then I would be more than happy. Probably ready for better technology by then anyway.
I don't know why they are 1 kg heavier than Ping's. The cell cases will be some of it, perhaps the plates are thicker or something. People do seem to be reporting around 10Ah capacity from them.
Anyway, thanks for the advice guys, I think I will be ordering one in the morning.
John
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