2x AA 1,2V NiMH min 1800 mAh

inside small 3V DC engine with piston pump

solar panel for charging

Water pump without load directly connected 100 mA @2,8V = 280mW

Idle - 120uA

Green led blinks - timer running: max 27mA, average 190uA

manual mode - no load: 123mA

manual mode - load: 140mA