Battery

As we all already now that batteries main problem is that they tend to discharge too fast. There's never not enough energy. But technology electronics and maschines tend to develop and use more and more power seems like batteries are just a little bit lag behind in development, but it makes all the difference. Battery changes electric energy into chemical energy and stores it until someone connects a load to it and then it starts to change stored chemical energy into electricity on its plus and minus poles.

Theres electrical safety and physical safety. Batteries need to be taken care of not to overcharge and undercharge. Nowadays 400V EV batteries consist of 96 cells connected serially. Each serial cell voltages are monitored that is the job of BMS

Battery monitoring system (BMS) or Nissan names it LBC lithium battery controller. Takes care of battery “health”. EV battery has to last for 10 Years and to fulfill this expectation there is a bunch of electronics and clever software.