GEL Technology
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What is GEL technology?

Gel technology is a type of VRLA battery where the liquid electrolyte is suspended in a fumed silica gelling agent causing it to partially solidify. The gelling agent offers superior resistance to leakage and enhanced durability with little maintenance and no watering.

Exide invented the patented GEL battery technology under the dryfit® trademark*. Instead of being in liquid form, the electrolyte is thickened into a gel-like mass. The GEL battery is a highly robust energy-system with best-in-class deep cycle properties, allowing unmatched safe depth of discharge. Exide’s special patented design of pressure relief valves results in a fully sealed battery that can be safely stored and used in almost any location or environment, even transported by air. Crucially, GEL also has the smallest volume and weight ratio for the amount of Watt hours supplied.

Exide GEL battery

As an energy supply battery, GEL is the ultimate choice for many demanding applications including boats, motorhomes and caravans. GEL batteries are also essential in the latest commercial vehicles with dual battery systems, or indeed in any vehicle with extensive electric power needs. The benefits of GEL make it popular in construction, mining, agriculture and industry. The technology is also used to provide remote power, everywhere from local highways to the Arctic Circle. Exide is currently working on achieving higher performance levels through the introduction of carbon additives, re-designed negative electrodes and new grids to produce faster charging times and improved cycling performance, making GEL an even more effective supply battery.


*GEL was originally patented by Sonnenschein, which is now part of the Exide group.