They don't put FIREwalls in cars for nothing, which is just piece of sheet metal between the passenger compartment and the engine bay. then after that I guess is where this thread comes into play, as the secondary fire control method. Okay so prevention of a lithium fire event through proper mounting, monitoring, and storage is key, #1. It won't be fun to dismount at 30 mph, but it's a manuver I first learned to do 45 years ago. I'm sure I can dismount if the pack pops off and suprises me. A fireball will be directed mosty up and away from the frame. It won't burn the motor, but it might take some wiring on the controler. Hopefully the aluminum wall between the pack and the frame will help save the bike. I might be able to snag out a few undamaged packs before the bad one pops though. I kid myself I might be able to remove a hot pack in time but I won't. It's front and center, I'm seeing it, smelling it, and I'll be off the bike long before flames shoot out. My lipo carries in an open top box right between my legs. If something happened, you just made a big mistake.
The vid shows the folly of storing the battery in a completely sealed ammo box. If the worst happens, fire at least doesn't shoot towards your body. Like an ammo box with holes in the bottom. Nothing wrong at all with the idea of building a box that redriects the flames away from you just in case. I have a pile of em waiting for similar treatment, but I never get around to proper disposal. At that point, only a cell failure from something internal (chemistry, defect, etc) or electrically external (overcharge, overdischarge, etc) is much of a hazard, and you can't do anything about the former, and only be cautious about the latter-unless you manually charge each cell individually while standing there the whole time watching the current and voltage meters, there is no way to guarantee nothing can happen, evne with the best protection electronics-stuff fails sometimes, usually in a way unplanned for by the designer. I havent' done it yet, but tying down the wire harnesses inside so they cant' vibrate and rub would be a really good idea, too, including and especially the balance wires, if any.Īs long as the cells and wiring cant' short out or be punctured, then you're as safe as you can get. Then the packs are packed tightly and padded so they won't be able to rub on each other or the casing, to cause pouch failure or wire shorting. It's partly the material (steel) and partly the way it is put together.
Ammo cans will protect against a fair bit of impact abuse, and probably prevent a puncture from most crashes you'd still care about anything afterward, anyway. Look at Stochastic's (and mine) ammo box battery packs. As Dogman points out, fireproofing doesnt' matter nearly as much as foolproofing/crashproofing.
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