Input power is routed between a battery and supercapacitor by power level, enabling faster delivery and longer portable charging.
Input-aware power routing charges the supercapacitor, battery, or both to balance fast charging with reliable output under variable power.
Wobbling laser welding joins battery electrode protrusions to collector plates while limiting spatter, separator melting, and micro-short risk.
A nested terminal holder lets adjacent battery modules connect with less gap, improving pack compactness without losing electrical connectivity.