We develop and manufacture lightweight 12 V Lithium-Ion automotive / car starter battery. Lite Plus direct replacement battery is 3-4 times lighter than traditional 12 V lead-acid starter battery. Suitable for driving enthusiasts due to 10-15 Kg weight savings over original OEM unit. It has 2-3 times longer change interval and it's ecologically clean.
Battery tech explained: http://liteplusbattery.com/lithium-ion-battery-technology/