  We present the first determination of $V_{cb}$ from inclusive $B\to X_c \ell
\bar\nu_\ell$ using moments of the dilepton invariant mass, $q^2$. These
moments are reparametrization invariant quantities and depend on a reduced set
of non-perturbative parameters. This reduced opens a new path to extract these
parameters up to $1/m_b^4$ purely from data and thereby reducing the
uncertainty on $V_{cb}$. In this paper, we present our first determination of
$V_{cb}$ using this method. Combining the recent measurements of $q^2$ moments
by Belle and Belle II, our default fit gives $|V_{cb}| = (41.69\pm 0.63)\cdot
10^{-3}$. This results presents an important independent cross check of, and is
consistent with, the previous state-of-the-art inclusive determinations using
lepton energy and hadronic invariant mass moments.
