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23000 3350mAH lithium batteries exploded, um... I think I remembered something. A certain brand of ModelS electric vehicle was equipped with 7104 300mAH+lithium batteries. Could it be that the question owner was very frustrated and bought three at once, leaving them in the garage to worry about being blown up?

Don't worry, even the most active lithium-ion battery in the lithium-ion family (which Tesla uses) is not easy to explode.

The title only mentions "lithium batteries", there are many types of lithium batteries, and their safety is also different.

A safer option is a lithium polymer battery, which has a paste like filling inside when opened. This type of battery will not explode even if it is short circuited, usually bulging or breaking. It is commonly used in electronic devices such as mobile phones, tablets, ultra-thin laptops, etc. in our daily lives (so "a certain brand Note7 grenade" is just a joke with low power). It is very safe and has a high energy density, but the price of this type of battery is slightly higher.

In addition to lithium polymers, there are also lithium-ion batteries, among which the safer one is lithium iron phosphate batteries (which are used in electric vehicles by BYD and other manufacturers). Although they have better safety, their prices are also higher. Moreover, the energy density of lithium iron phosphate batteries is not ideal, and batteries with the same range will have a larger volume.

Finally, there is the most explosive conventional lithium-ion battery -18650, which means a standard cylindrical lithium-ion battery with a length of 65mm and a diameter of 18mm.

The 18650 lithium battery is a standard lithium battery specification developed by SONY Company to save costs. 3350mAH is almost the upper limit of its capacity (after all, its volume is fixed). Although there are some safety measures in the design, compared to types such as lithium iron phosphate and lithium polymers, the 18650 lithium battery still has the highest risk of explosion. However, the explosion here is not the same concept as the "explosion" of weapons, and its killing power is negligible. After the explosion, the combustion is very intense, releasing highly toxic gases. Special attention should be paid to safety during use.

What would be the power of 23000 18650 lithium batteries if they really explode?

In terms of energy alone, the energy of a 3350MAH lithium battery is about 43 kilojoules, and 23000 pieces is close to 1 billion joules, equivalent to the energy of 240 kilograms of TNT explosives; The weight of 23000 lithium batteries (approximately 50-52 grams per 3350mAH battery) is about 1150 kilograms, so it seems like a big bomb. Is there a risk of electric vehicles exploding into the sky?

There is no need to worry about this. Lithium batteries are only a type of battery, not a bomb. Even the most unsafe 18650 lithium battery has a relatively slow energy release, and at most, it burns violently after rupture. The so-called "explosion" is just a small noise emitted when it ruptures.

The conclusion is that even if 23000 lithium batteries are stacked together, the explosive power is very limited and basically cannot kill people.

However, after the battery breaks, the combustion of lithium medium is extremely dangerous, with fierce flames and highly toxic gas. Therefore, in daily life, it is important to be careful when using equipment equipped with 18650 lithium batteries.

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