Unitech Battery Limited Unitech Technology Limited Unitech is a professional Ni-MH, Ni-CD, Lithium Polymer manufacturer in Shenzhen China from 2001, specializing in special battery researching like Low Temperature type, Long Circle Life … Unitech is a professional Ni-MH, Ni-CD, Lithium Polymer manufacturer in Shenzhen China from 2001, specializing in special battery researching like Low Temperature type, Long Circle Life …