Re: Do your LiFePO4 batteries ever get too warm?
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If the battery is sufficiently sealed so that water does not get inside, and it has a bms / fuse - then it should hopefully not "run away".? Salt water is much more conductive than fresh water.? Not sure how many amps could possibly pass between terminals - I wouldn't think a LOT - as the resistance is still pretty high.? ?And in the event of a dead short - many battery sets should have a fuse that would quickly blow.? The BMS should detect a high discharge, and also attempt to shut down the battery.
Of course, this depends on who put the battery together, whether it includes a fuse, etc.? If you're putting your own system together - it's up to you to put a fuse in directly at the battery.
On Monday, February 17, 2020, 08:45:23 PM CST, mosslandingcreatures <mosslandingcreatures@...> wrote:
That¡¯s perhaps the conundrum. Coming ashore sooner or later (cruisers) you¡¯re going to broach your dingy and water will most certainly invade the typical vented battery box. No prob with AGM because I¡¯ve dunked them many times without consequence. A lithium battery with BMS I¡¯ve been told will at least ruin the battery or worse start a runaway when immersed in saltwater? I wish I knew of any electric skiff cruisers that knew the answer using lithium. I am very anti ICE but maybe for my own safety I¡¯ll have to go back to it. Why do people vent battery boxes if the battery inside will not emit explosive gases? (Lithium).?
On Mon, Feb 17, 2020 at 5:45 PM THOMAS VANDERMEULEN < tvinypsi@...> wrote: Excellent point, Phil, and not to mention that ABYC Standards call for ventilation of the battery box or compartment to prevent the concentration of any escaping toxic or flammable gasses.
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