  Energy dissipation, typically considered an undesirable process, has recently
been shown to be harnessed as a resource to optimize the performance of a
quantum battery. Following this perspective, we introduce a novel technique of
charging in which coherent charger-battery interaction is replaced by a
dissipative interaction via an engineered shared reservoir. We demonstrate that
exploiting collective effects of the engineered shared reservoir allows for
extra optimization giving rise to optimal redistribution of energy, which leads
to a significant enhancement in the efficiency of the charging process. The
article unveils the intricacies of built-in detuning within the context of a
shared environment, offering a deeper understanding of the charging mechanisms
involved. These findings apply naturally to quantum circuit battery
architectures, suggesting the feasibility of efficient energy storage in these
systems. Moreover, the super-optimal charging offers a practical justification
for charger-battery configurations.
