Re: A few thoughts on LIPO charging and the Phantom in gener
Driffil,
I did not mean to suggest that the chance of any one battery flaming while charging goes up, but that the overall chance of any one of them flaming while charging is additive. That is, if the chance of one battery flaming during charging is 1 in 100, then the chance of a fire while charging 6 at one time is 6 x 1 = 6 in 100. I also don't fully understand the chemistry involved but Lithium is in the same line as Sodium on the Elemental chart which means aggressive reactiveness, a lot of energy absorbed or discharged in changing state, what we harness as battery power, but can just as well become heat and flame.
I don't know what will happen to a cell sitting adjacent to one flaming, do you? But if the chemical reaction causing flaming continues after the electrical current is stopped....which I assume would happen as wires would melt, short out, blow fuses, etc.., then a self sustaining chemical fire based on the chemicals present in one cell would be highly likely to be able to ignite a fire in an adjacent cell. The general rule is to isolate the individual elements so there is not a chain reaction and you have 6 in flames at once.....which will be a considerably larger and more dangerous fire.
And, sealing the ammo box also raises ?'s of whether the burning is self-sustaining even if shut off from oxygen (creating a bomb) OR what happens when you pop the top and oxygen rushes in.
I have lots of questions and few answers......other than to point out the principle of isolating the potentially flammable or reactive elements from each other...rather than pile them all in together. I drive by the Army Ordnance reserve in Boardman, OR regularly where much of the ammunition, missles, bombs, etc. are stored....in small, individual bunkers isolated from each other spread over square miles of desert so a problem in one does NOT set off the adjacent...etc..
Since the danger of flaming is during charging, then the principle would be to isolate charging batteries from other batteries, charging or not, and in some container capable of containing the flames from that one battery.
That is the best I got. Sorry. This is a very vexing problem.