The hybridization degree of the vehicles is getting bigger due to the felt need to fight and reduce tail pipe emissions. Internal combustion engine efficiency-oriented optimization on its own is not effective in reducing fuel consumption to respect increasingly stringent regulatory restrictions. Hybrid powertrains represent a viable solution. The ever-growing hybridization degree of the powertrain requires also bigger electrochemical system to store the electrical energy on board. Battery compartment is more and more solicited and plays an increasingly central role in this transition toward renewable energy for vehicles propulsion. Also battery represents an important cost in the total cost of the vehicle and it is clear why an health-conscious management of the electrochemical system is crucial in achieving the best possible benefit.