Hello:
——★1. The positive and negative electrodes of batteries (including lithium batteries, nickel-hydrogen batteries, lead-acid batteries, etc.) are made of different materials. . There will be some tension in it. Even if it is not activated, some tension is still present.
——★2. "Lithium battery discharge voltage is zero" means the battery plate has been damaged, such as plate breakage, positive, negative >< strong>Short circuit between plates, Active material failure, etc.
——★3. Lithium batteries cannot be charged when the discharge voltage is zero (even if charged, the voltage is very low and the current is very small).