TERAPUMP TRPMW300 ELECTRIC/BATTERY OPERATED DRINK WATER PUMP (EXCEPT GLASS BOTTLES) - BPA FREE [Excluding Glass] WARNING: Will Rust if you let water inside. So please be careful not to put the head upside down because water will get inside. Innovative Electric Battery-Operated Home 5 Gallon Creative Electric Battery-Operated High Quality PC Water Bottle Pump - The Original Dolphin Manual SODIAL(R) 5 Gallon Water Bottle/Jug Hand Pump Fasten this pump onto your bottle. Plug into an outlet with its included power cord. Or use batteries. Flip the switch on. Press the pump, and enjoy drinking water.