A class of batteries in which the electrolyte is thickened to a gel-like consistency by the addition of silica.
Gel batteries are sealed and have a safety valve. This makes them leak-proof, absolutely maintenance-free and more vibrant resistant than flooded batteries.
They have a very low self-discharge rate and can withstand deep discharge.
They are used as supply and traction batteries and as starter batteries in vehicles with start-stop technology or motorcycles with many short trips.