What type of lithium batteries are they? LiFePo4 are the don’t catch fire, just smoke type. Other types of Lithium batteries can be much more volatile and I wouldn’t put them anywhere near an airplane.
Tristan > On May 16, 2024, at 12:03 PM, Larry Flesner via KRnet <krnet@list.krnet.org> > wrote: > > > > > Considering our recent discussion on lithium batteries, I took some time > during my 3 hour, part time shift 🙂 at the battery store this morning to snap > some photos for a "show and tell" on the new technology we are making a part > of world now days. If these photos are too big for a single post I will > break them up into several post as well as several other posts of other > lithium technology we use in our toys and shop. > > This battery is a bit larger than what we uses in our aircraft but the build > / structure is basically the same. First photo: battery case. > > Larry Flesner > > > <Koy2QVgiaUZqhGw2.jpg> > > Second photo: BMS (ckt pwb that controls load and charging. > > > > <XG0aZk2901ZiIvFu.jpg> > > Note that two packs in parallel are connected in series to the next two packs > in parallel , etc. etc., giving you 4 series packs of two in parallel to give > you a 12+ volt pack. All the small color wires are monitoring the individual > packs for temp, hot / cold, pack voltage, balance charging, and whatever else > the BMS monitors. Side note: four of the batteries were sold with a 50% fail > rate, quite possibly due to type of charging being used. (speculation on my > part) > > > > <WndUNXQ4H6Lr94Xw.jpg> > > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet
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