This is call open circuit operation. It's not a big deal, it may reduce the lifetime of the panels more than not having them lit as sunlight degrades everything. The panels voltage increases to max, and convert sunlight into heat, with little consequence.
You should not connect the positive and negative as this produces a short circuit condition and could ...
Using 33uH inductor in the circuit, LED can draw 110mA current. This is the not full power required to get full brightness of 1W LED but 110mA gave good light.
Thus, 1W LED works with QX5252F in the solar garden light circuit.
This thread can be closed now.
While this answer addresses the specifc case of charging a 3S Lithium battery from multiple small PV panels, the material covered is applicable to many small solar charging applications.
If desired the TP4056 charger IC could be used to make one's own single cell LiIon charger "from scratch" (just as one could make one's own PV panels from ...
Go read properties of recommended Lithium charge specs. Then compare with all that you have.
11V x 1200mAh = 13.2Wh.
3 x 5v x 30mA = 0.45W @ 15V. (Rated).
- 3x 3V x 30mA = 0.9W @ 9V when Vbat @ 0 % SOC
Understand that the specs for charge profile on Lithium cells are :
a) CC mode until 4.2V/cell
this assumes all cells are balanced so if string is ...
There is no reason you cannot consider this if you are aware of all requirements.
I remember seeing a website to compute utilization and compute GTI supply availability and need for storage capacity for shared wind and solar farms just the other day on a US govt energy site, where depending on your design you can enter all the variables.