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Battery swap 36volt Lithium?
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<blockquote data-quote="Smells Like Sulfur" data-source="post: 5821664" data-attributes="member: 23644"><p>I actually know the guy that made that video. He's a good, honest guy, and runs a small business that distributes lithium batteries and kits. I could be mistaken, but I'm pretty sure he also sells (or sold at one point) deep cycle lead acid batteries, so it's not like he's trying to push you one way or the other. He knows what he's talking about too. </p><p></p><p>He did some other tests as well, and was unable to get lithium iron phosphate batteries to fail to fire unless they were severely abused, like spike driven straight through it, or extreme overcharge, Even the overcharge just created a lot of smoke, but no flame. Other lithium chemistries will however fail to fire very easily if abused, like the lipo cell in pretty much every cell phone, or e-scooter / bike battery. </p><p></p><p>Sticking a metal rod through any type of battery will probably cause a fire, it creates a dead short through its entire structure. I'd be interested to see what a metal spike driven through a fully charged deep cycle lead acid battery would do. </p><p></p><p>Lithium batteries do have the potential to gas, but under normal operation they don't. Most LiFePo4 cells have a vent, but it's completely sealed, and unable to open unless it is permanently broken, if the gas seal is broken, the battery should be immediately disposed of. Lead acid will gas under normal operation. LiFePo4 cells like the one in the video will not catch fire due to thermal runaway (like lipo cells do) either, I'm part of a forum that specializes in electronics in lithium batteries, and that video has been discussed quite a bit, including by the guy who made it. </p><p></p><p>From Google: </p><p>" A typical lead acid battery will develop approximately <strong>.</strong> <strong>01474 cubic feet of hydrogen per cell</strong> at standard temperature and pressure".</p><p></p><p>" LiFePO4 batteries do not emit gas like lead-acid batteries do. You can safely store and operate LFPs in sheds, garages, or inside your home."</p><p></p><p>Unless you're keeping your batteries in an airtight container, gassing is more or less irrelevant anyway. </p><p></p><p>I do agree about lead acid being a better starter battery, there's a reason they're still used in vehicles. That being said, there are no circumstances that I would choose lead acid over lithium for energy storage, unless I lived in a ridiculously cold climate, Even then, I would rather dig a root cellar for lithium. </p><p></p><p>I think it's also worth mentioning the environmental impact of manufacturing lithium cells, most lead acid batteries are recycled, lithiums aren't as much, and we are almost entirely dependent on other countries for our supply. </p><p></p><p>I'm just pointing out that I think there's a lot of misconceptions about lithium. Some Li chemistries are inherently more dangerous than others, and most people aren't aware that there are multiple types of lithium batteries, nor are they aware that they are not "drop-in" replacements for lead that require additional hardware to use safely.</p></blockquote><p></p>
[QUOTE="Smells Like Sulfur, post: 5821664, member: 23644"] I actually know the guy that made that video. He's a good, honest guy, and runs a small business that distributes lithium batteries and kits. I could be mistaken, but I'm pretty sure he also sells (or sold at one point) deep cycle lead acid batteries, so it's not like he's trying to push you one way or the other. He knows what he's talking about too. He did some other tests as well, and was unable to get lithium iron phosphate batteries to fail to fire unless they were severely abused, like spike driven straight through it, or extreme overcharge, Even the overcharge just created a lot of smoke, but no flame. Other lithium chemistries will however fail to fire very easily if abused, like the lipo cell in pretty much every cell phone, or e-scooter / bike battery. Sticking a metal rod through any type of battery will probably cause a fire, it creates a dead short through its entire structure. I'd be interested to see what a metal spike driven through a fully charged deep cycle lead acid battery would do. Lithium batteries do have the potential to gas, but under normal operation they don't. Most LiFePo4 cells have a vent, but it's completely sealed, and unable to open unless it is permanently broken, if the gas seal is broken, the battery should be immediately disposed of. Lead acid will gas under normal operation. LiFePo4 cells like the one in the video will not catch fire due to thermal runaway (like lipo cells do) either, I'm part of a forum that specializes in electronics in lithium batteries, and that video has been discussed quite a bit, including by the guy who made it. From Google: " A typical lead acid battery will develop approximately [B].[/B] [B]01474 cubic feet of hydrogen per cell[/B] at standard temperature and pressure". " LiFePO4 batteries do not emit gas like lead-acid batteries do. You can safely store and operate LFPs in sheds, garages, or inside your home." Unless you're keeping your batteries in an airtight container, gassing is more or less irrelevant anyway. I do agree about lead acid being a better starter battery, there's a reason they're still used in vehicles. That being said, there are no circumstances that I would choose lead acid over lithium for energy storage, unless I lived in a ridiculously cold climate, Even then, I would rather dig a root cellar for lithium. I think it's also worth mentioning the environmental impact of manufacturing lithium cells, most lead acid batteries are recycled, lithiums aren't as much, and we are almost entirely dependent on other countries for our supply. I'm just pointing out that I think there's a lot of misconceptions about lithium. Some Li chemistries are inherently more dangerous than others, and most people aren't aware that there are multiple types of lithium batteries, nor are they aware that they are not "drop-in" replacements for lead that require additional hardware to use safely. [/QUOTE]
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