The polymer composite material with heat management capabilities (PCM - C) of GSC plays a crucial role in the heat dissipation of lithium - batteries in high - power power tools such as electric drills, angle grinders, and chainsaws. It is added with high - thermal - conductivity fillers like nano - graphene, and its precise temperature control technology can keep the temperature difference of the battery within 5°C. It can efficiently absorb heat and reduce the risk of thermal runaway. This material is lightweight, long - lasting, has a high energy storage density, and can significantly reduce weight. It can also be customized and optimized, with remarkable heat - dissipation effects (it can reduce the temperature by 15 - 20°C) and can extend the battery life by 30%.