Thetford Porta Potti 365 Portable Toilet – Manual Piston Flush – 50281

The Porta Potti 365 is the simple, no batteries version. It holds 4 gallons of fresh water and 5.5 gallons of waste, roughly 56 flushes, and you flush it with a hand pump instead of a button. Nothing to run flat, nothing to replace, and it works the same on day one and day one thousand.

It is a compact box, 16-1/2 inches long and the same tall, and weighs under 9 pounds empty. It stows in a car trunk, a van, a tent, or a boat locker without eating a whole corner. The waste tank separates from the top half, and a rotating pour-out spout lets you aim into a dump point without wrestling the thing. A sealed valve keeps odours shut in the tank, and a level indicator tells you when the waste tank needs emptying.

The seat and cover lift off for cleaning, and the whole unit wipes down easily. If you would rather press a button than pump a handle, look at the Porta Potti 565E instead, which has a battery powered electric flush and a taller seat.