This is my mini aquarium with 1W bright white LED + Submerse 0.3W water pump DIY I get from
mini decoration fountain which can be operated using at minimum 1.5V. What is the Green Tech is both power comes from 0.6W (6v 100mA) Solar panel and Uniross 2100mAH rechargeable battery X2. In day the sistem using both solar and battery and after fully charge 12H in the day could round whole night the LED and filter system. The connection is simple since current from solar panel never exceed 100mA. Since charging it to full using low as 50mA and it can stand for 18H. And the system continued. No bill 
Post time: Jun-23-2017