Review on TERA PUMP: Efficient Battery Operated Liquid Transfer 💧 Siphon Pump for Up to 7 Liters Per Minute by Derrick Shah

Inexpensive but should work well. The power switch on the pump did not work. When I unscrewed the battery cover with the switch, the pump turned on and would not turn off until I unscrewed the cover about one turn. If I open the cap enough that the motor shuts off, I can start the pump with the push button switch as intended. I can live with this issue and actually think it could be a good thing since I can just let it run on its own by flicking the throttle and when it gets to the point where I want to stop it I can unscrew the cap. half a turn and just push the button. Hope there are no sparks. If the pump was more expensive I would send it back for replacement, but that's a hassle.