|}
</blockquote>
== HEV battery system concerns ==
The ultimate goal of HEV can only be achieved with the balance battery pack since the main source of energy is batteries and recharging is carried out on board.
'''Advantages of balance battery pack''':
* Balancing of battery SOC’s increases battery life
* Automated balancing circuitry will decrease overcharging (and gassing) and decrease manual maintenance.
This, in turn, provides:
* Equivalent power range at low cost as conventional vehicle while reducing fuel costs and harmful emissions.
* Twice the travel distance of a conventional vehicle on the same amount of energy.