Low-cost and easy to manufacture energy-harvesting triboelectric device is developed to transform mechanical energy into electrical energy. A lateral sliding mode triboelectric energy harvester (SM-TEH) is fabricated based on a double-dielectric-layered structure. Dielectric layers are comprised of Nylon sheets and PTFE sheets attached to copper (Cu) electrodes. A slider-crank mechanism is considered to provide mechanical movement that has been designed and to understand the effect of varying operating conditions on the output performance of SM-TEH. The experimental results are compared with simulation results at various rotational speeds from 40 to 70 rpm and at separation-distance varied from 7 to 10 cm to evaluate the model\'s reliability in predicting SM-TEH\'s output performance. The stability and durability test is performed for SM-TEH. The feasibility of the developed SM-TEH is proved by lighting up 40 red Light-Emitting Diodes (LEDs). SM-TEH has vast applications in self-powered electronic devices and systems.