Next came a revival of trusted and true to form lithium-free batteries, otherwise known as lead acid. Lead acid batteries cost even less to produce and are a matured technology.
Picture your car battery that you know and love. Lead acid are considered safer than lithium-ion batteries, when it comes to combustion, partially because its electrolyte is water and less prone to ignite.
You might be thinking: “That name is kind of scary.” Typically, its bark is louder than its bite. A well-made lead acid battery will have proper venting that releases the hydrogen and oxygen to avoid buildup. In a newer, sealed lead acid battery, like inside a hoverboard, oxygen is reduced to water limiting the generation of hydrogen.
Yes, a puncture or damage could lead to danger similar to the lithium-ion, but the risk for combustion is much much lower with lithium free. Enclosing the battery in an aluminum alloy casing, like SentryShield® adds further safety features exclusive to Swagtron.
Lithium free allows the safety level to move up and the risk level down. However, these lead acid safety considerations came with some drawbacks: