Solar Fountain Pump Kit Day Time Usage: This Solar Pump Kit operates best in direct sunlight and has a flow rate of 50 gallons per hour in optimum conditions. Night Time Usage: Turn "OFF" the switch in the daytime; the batteries would be able to store energy for the night use. If it has 6 - 8 hours sunlight, it would have 4 - 6 hours at night 3 Watt Solar Panel (8V 375 mA) (Size: 6" Length x 7" Width x 0.5" Height) 5 AA NI-MH 1.2V 1500 mAh Rechargeable Batteries (included) 7" Post and 7" Ground Stake (All Aluminum)