  Following a theoretical proposal on multi-impurity charge Kondo circuits [T.
K. T. Nguyen and M. N. Kiselev, Phys. Rev. B {\bf 97}, 085403 (2018)] and the
experimental breakthrough in fabrication of the two-site Kondo simulator [W.
Pouse {\it et al}, Nat. Phys. (2023)] we investigate a thermoelectric transport
through a double-dot charge Kondo quantum nano-device in the strong coupling
operational regime. We focus on the fingerprints of the non-Fermi liquid and
its manifestation in the charge and heat quantum transport. We construct a
full-fledged quantitative theory describing crossovers between different
regimes of the multi-channel charge Kondo quantum circuits and discuss possible
experimental realizations of the theory.
