How much does Yang Kang's 60v graphene 70a weigh?

Yang Kang battery 60v graphene 70a weight 1 1 kg.

Graphene battery is a kind of battery, which was developed by Nanotek Instruments, Ohio, USA, using the characteristic that lithium ions quickly and massively shuttle between graphene surface and electrodes.

The electric vehicle driven by graphene battery can reach 1000 km, the charging time is less than 8 minutes, and the battery life will be longer.