The more equipment you use the quicker you will use the available charge on your house battery. If the weather is hot, try to keep the fridge closed as much as possible. A good tip is to keep the fridge filled, even by using recycled bottles filled with water, and turning the fridge to a lower setting. Parking the vehicle in the shade can also reduce power consumption.  We recommend plugging in and recharging your house battery every second night to maintain the lights, fridge and water pump.