What is EFB?

While different manufacturers will each build and design their EFB batteries differently the general concept remains the same. EFB (Enhanced Flooded Battery or Extended Flooded Battery) takes the Maintenance Free battery one step closer to AGM batteries by either using more plates to increase Ah capacity, thicker plates to increase deep cycle ability or a combination of both. They may also be enveloping the plates which are similar to Absorbed Glass Matting between the plates or enveloping. Either way, the result is a flooded battery with characteristics more in line with the advantages of AGM and a performance heading towards that of AGM but at a lower price point.