power supply for dell latitude 5440

Car refrigerators​

Handheld vacuum cleaners​

Electronic blood pressure monitors​

Tablet computer​

To provide power for portable shoe cleaning machines (mini models) to clean dirty camping shoes

To power electric blankets (small outdoor models) to enhance the warmth of sleep during winter camping​

To charge electric screwdrivers to facilitate assembly or disassembly of equipment during camping

To supply power to fish tank filters (small) to keep the water quality clean in the pet fish tank during camping