DC 6V Power Cord with DC Plug size is 【5.5mm x 2.5mm】. E.g. DC output port OD is 5.5mm, ID is 2.5mm. Center positive. Please kindly confirm it before ordering.
Five protections and safety guarantees: over-temperature-protection,short -circuit-protection,undervoltage-protection,overvoltage-protection,overcurrent-protection
【Incompatibility】This item can't charge the 6V battery, and incompatible with radio/calculator/vacuum/toy.