The Double Reversible Fuel Cell H2/O2/Air is a Reversible Fuel Cell (RFC), meaning it can work in either electrolysis or fuel cell mode. As an electrolyzer, it uses an external voltage to break down water into hydrogen and oxygen. As a fuel cell, it produces electricity by using hydrogen and oxygen gas (or atmospheric oxygen, also known as air).H-TEC's Double RFC H2/O2/Air Reversible Proton Exchange Membrane Fuel Cell (PEMFC) can be operated in three different modes:

(1) Electrolyzer Mode - Uses external voltage to produce Hydrogen and Oxygen
(2) H2/O2 Fuel Cell Mode - Uses pure Hydrogen and Oxygen to produce electricity
(3) H2/Air Fuel Cell Mode - Uses pure Hydrogen and Atmospheric Oxygen (also known as air) to produce electricity

• Electrolyser Mode: 20 mL/min H₂; 10 mL/min O₂; 5.5 W @1.5A
• Fuel Cell Mode (O₂): 1W @ 750mA
• Fuel Cell Mode (Air): 400mW @ 300mA

• Electrolyzer Area: 2.9 cm2 X 2 cells

• H x W x D: 56 x 42 x 57 mm
• Weight: 63 g