The Vehicle Technologies Office works on increasing the energy density of batteries, while reducing the cost, and maintaining an acceptable power density. What's more,, there are many different types of Lithium Ion Battery with different models, such as 12V Lithium Ion Battery BMS, 24V Lithium Ion Battery BMS, Prismatic Lithium-ion Cell, 48V Lithium Ion Battery System, 256V Lithium Ion Battery System, 512V Lithium Ion Battery System, 36V Lithium Ion Battery BMS, 48V Lithium Ion Battery BMS, etc. http://www.hiccn.com/lithium-ion-battery-bms/24v-lithium-ion-battery-bms/