All year round Solar garden light

I was motivated to design this solar light because I was fed up with the poor performance from commercial lights.
The solar panel is one watt and the battery storage is a 10Ah rechargeable D cell. I'm using a 100uH inductor which gives 10mA into the LED and 33mA drain from the cell this gives a very adaqate light and the LED is very over rated for the job so long life and low phosphor degradation will hopefully be the outcome.
The chip used is a QX5252F this is commonly available from eBay an