Damage to the battery causes the battery to short circuit and heat up.
1. The lithium battery contains positive and negative electrodes. The battery shell is damaged, causing direct contact between the positive and negative electrodes, causing a short circuit in the battery. of electrical energy to be released, resulting in high temperatures, sparks and even explosions.
2. Lithium batteries will be impacted or worn from the outside during the crushing and mixing process, causing the internal active material to react with oxygen, causing heat and an inability to dissipate heat effectively. the battery overheats, catches fire, etc.
Yes, if only the outer skin is damaged (the others are intact), you can recondition the outer skin with a piece of paper. I hope it is a battery with a relatively low current, like the one in the'interior. a light. Battery, MP3\MP4... If it's other (old-fashioned public broadcasting...) it is recommended to change the battery for greater safety