Charge in 5 Minutes, Travel 3,000 km: Huawei Patents Solid-State Battery

In a move to advance its energy storage, Huawei has filed a patent for a battery that can be charged in five minutes and deliver a range of up to 3,000 kilometres. The new sulfide-based solid-state battery will have energy densities from 400 to 500 Wh/kg, which is two to three times more than any conventional lithium-ion cells.

To improve electrochemical stability and solve issues like side reactions at the lithium interface,  the patent suggests doping sulfide electrolytes with nitrogen.

Despite not producing power batteries, Huawei has demonstrated a growing interest in upstream battery components. The business submitted a separate patent application earlier in 2025 for the production of sulfide electrolytes, a crucial substance that is expensive and occasionally more expensive than gold due to its high conductivity.

Although Huawei has received a lot of attention for its boasts of a 3,000-kilometre range and five-minute charge, experts caution that these numbers are purely theoretical and would necessitate charging infrastructure that is not currently commercially accessible. 

As per carNewsChina, there are still some remaining hurdles for the company. Ionic conductivity is typically lower in solid electrolytes than in liquid ones, yet efficiency is still constrained by interfacial resistance. Moreover, mass-market adoption is generally hampered by high production costs, which are currently between 8,000 and 10,000 yuan per kWh (about 1,100–1,400 USD).