This article explains the common causes of charger fuse failure in battery-powered transfer carts, including internal short circuits, voltage surges, wiring problems, deeply discharged batteries, and excessive charging current. It provides a practical troubleshooting procedure covering visual inspection, multimeter testing, capacitor and switching component checks, and controlled power-on testing. The article also highlights daily maintenance practices, such as keeping chargers dry and ventilated, protecting against power fluctuations, and checking charging connections to improve charger reliability and ensure safe, stable transfer cart operation.