Unlike most solar fountains that only work when the sun is out, you can enjoy at your leisure.  The solar-on-demand allows you to choose when you want your fountain on using the easy on/off switch.  You can operate it daily using the battery technology for consistent performance even in cloudy conditions, or leave your fountain off, charging the batteries for use when you want it, even at night. Water constantly recycles from a hiden reservoir. Battery capacity of 6 hours. Battery recharges during the day with sunlight. No wiring is required, simply install and enjoy.
 

Note: LEDs only work at night and will turn on/off automatically

Also comes with a 3 hours timer set.   With this timer after you turn on the pump, it will keep running for 3 hours, then it turn off itself for saving power.

At 30" tall and 15.5" wide and 8.5" deep this solar on demand wall fountain will be perfect for your patio or garden.

The battery generally lasts between 12-18 months, but with repeated charges and discharge cycles the battery will become less efficient and battery capacity may reduce.  If the battery does appear less efficient you may try and boost charge it.  In order to boost charge the battery you must leave off for 2-3 sunny days to allow maximum charge to the battery.  If the boost charge does not help the battery than you will need to replace it.  A new battery can be found at local hardware stores.