How to upgrade the battery of MN MODEL MN91 RC CAR?

The battery upgrade of MN MODEL MN91 RC CAR needs to comprehensively consider factors such as voltage, capacity, battery type and safety. Through reasonable upgrade, the battery life of the RC car can be extended and the performance can be improved. However, it should be noted that battery upgrades may also bring some potential risks and problems, so you need to fully understand the relevant knowledge and follow certain specifications before upgrading.