  We study multi-lepton signatures of the triplet like charged Higgs at the LHC
in the context of $Y=0$ triplet extended supersymmetric model (TESSM). In TESSM
the $h_i^\pm W^\mp Z$ coupling appears at tree level when the triplet vacuum
expectation value is nonzero, and because of the coupling the charged Higgs
decay channels as well as the production channels can dramatically change at
the LHC. We show that for the triplet dominated charged Higgs the main
production channels are no longer through the top decay or $gg$ and $gb$
fusions since these are very suppressed due to the lack of triplet-SM fermion
coupling. In the numerical analysis, we consider also other possible production
channels some of which have additional contributions from the diagrams
containing $h_i^\pm W^\mp Z$ vertex. We investigate the decay channels of a
triplet like light charged Higgs ($m_{h_1^{\pm}}\leq 200$ GeV) and show that
depending on the triplet component, the charged Higgs can substantially decay
to $W^\pm Z$. We further examine the $3l$, $4l$, $5l$ multi-lepton signatures
of the triplet like charged Higgs by considering four different benchmark
points for which we perform PYTHIA level simulation using FastJet for jet
formation at the LHC with 14 TeV. We found that for favorable parameters the
earliest discovery with 5$\sigma$ signal significance can appear with early
data of 72 fb$^{-1}$ of integrated luminosity. We also present the invariant
mass distribution $M_{lljj}$ for ($\geq 3\ell)+(\ptmiss \geq 30$ GeV) and
$(\geq 3\ell)+(\geq 2j)+(\ptmiss \geq 30$ GeV) and show that in addition to the
charged Higgs mass peak, an edge that carries information about heavy
intermediate neutral Higgs bosons arises at the end of the mass distribution.
