Grinntech, a startup specialising in lithium-ion batteries for electric vehicles (EVs) and energy storage systems, announced it has closed a round of $2 million from a set of high net-worth individuals (HNIs) and senior people from the automotive industry. The startup also unveiled a range of high-tech batteries customised to Indian conditions along with its proprietary IoT-enabled BMS to power two-wheelers, three-wheelers, and tractors/light vehicles.