SMRTR Science & EngineeringJul 29, 2026Interesting Engineering

China tests ultra-fast EV battery that charges to 70% in 3 minutes and 41 seconds

SMRTR summary

China's Hongqi has tested a battery prototype that charges from 10% to 70% in just 3 minutes and 41 seconds, beating BYD's current best of 5 minutes. Using advanced battery chemistry and adaptive cooling, the prototype reduces internal resistance by 15%, but lacks a production schedule.

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