A round solar panel suitable for kit makers and DIY applications. The measured short circuit current is just over 220mA and open circuit voltage is 7.2V. This would be suitable for charging battery packs from 3.6V to 6V. Be careful when charging Li-Ion batteries of less than 1000mAh that they do not overcharge and overheat, this would not be likely when charging batteries of 1000 mAh or larger.

Two modules can be connected in series to double the voltage for charging 7.2V and 9V batteries. Series-parallel configurations can be used to increase the current as well as the voltage.

Solar panel construction details
A 130mm round solar panel composed of mono-crystalline solar cells embedded in PET lamination. The module has unsealed edges and does not have leads attached. Use care when soldering leads to the contact points as excessive heat will damage the module.
Dimensions
Diameter 130mm
Thickness 3mm
Weight 55 g
Power 1W
Isc 0.22 A
Voc 7.22V
Vmp 6.0V
Imp 0.18A