The battery used in the American electric vehicle TESLA is composed of nearly 7,000 Panasonic 18650 batteries connected in series  Large battery packs combined in parallel  The safety of the TESLA battery power system has been questioned by the automotive industry  A battery expert said that the probability of fire of 18650 type batteries in the United States is 0 2 millionths, then the probability of fire of a battery pack composed of 7,000 small batteries is 0 14%
Based on the current sales of TESLA, this will be As a result, it has a battery fire accident almost every month
The 18650 type battery can be recharged many times, thus greatly extending the life of the battery