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Chester watch the videos in the link I posted, very interesting. The chemistry of the lithium used in these batteries do not react when exposed to water. In fact immersing them in water is the recommended method.
Most of the fires or other problems have been with different chemistry such as Lithium Cobalt.
Like all new technology there is a steep learning curve and lots of misconceptions due to hear say. Yes other chemistries of Lithium batteries have had big problems but the LiFePO4 are very safe.
No problems answering questions, I'm satisfied with the safety of these.