Amid the global energy transition, lithium batteries are reshaping the landscape of mobile power applications thanks to their core advantages: high energy density (exceeding 200 Wh/kg), long cycle life (over 3,000 cycles at 80% DoD), and intelligent management (state-of-charge accuracy within ±1%). Particularly in high-power applications above 3 kW, intelligent lithium battery systems have achieved a breakthrough—reducing weight by more than 70% compared to lead-acid batteries. In propulsion systems, the low noise level ( 65 dB) and zero-emission characteristics of lithium-based powertrains are driving their widespread replacement of traditional internal combustion engines.