100 a/h Lithium Battery for $21?
Saw this ad this morning, a 4-pack of 12v 100 a/h lithium batteries for $82.99. So 400 a/h when linked in parallel. Our new-to-us 5er is a 2008 model, so I'm aready planning new electronics, conve...
Forum Discussion
pianotuna wrote:IMO, it's important to put both of these links into context.StirCrazy wrote:It is only more difficult. It can, and does happen.
LFP are not subject to thermal runaway like nicad and other chemistries.
https://onlinelibrary.wiley.com/doi/abs/10.1002/er.5298While it is unusual here is what may happen.
https://youtu.be/07BS6QY3wI8
All battery banks should be vented to the outside.
I believe the wiley.com link references a minor amount of thermal runaway (caused by overcharging) where damage is completely limited to the inside of the battery. The user may see the top "vent" rupture, but nothing more. I would surmise if a typical non-phosphate, lithium battery was subjected to the same overcharging, it would very likely explode and/or erupt in flames. Huge difference IMO.
I've seen this YT video before. To me this is akin to someone purposely puncturing a gas tank on a vehicle and having it explode or catch fire. It can happen, but . . .
Will Prowse at diysolarforum.com was the OP for a thread titled: "Can LiFePO4 Batteries Combust in Thermal Runaway Event?" One of his comments after someone posted a link to the above YT video: "The electrolyte is flammable. If a cell is physically damaged, you can catch it on fire. But for an exothermic reaction to occur to cause combustion, from the literature I've read, is impossible with lifepo4 . . . to have combustion caused internally, is impossible."
Lastly, I'm not aware of any external venting requirements for lifepo4. Do you have any supporting links that explain why this would be necessary? Thx.
