BS Battery SLA Range Find the battery you need here: Battery Finder MF batteries are designed to offer excellent power and reliability whatever the weather conditions. Supplied with an acid pack, MF batteries must be activated by filling the acid before first use. Totally sealed once activated, the gas recombination technology allows no maintenance, and does not require any water refilling. Utilizing advanced AGM technology, these batteries are perfectly suitable for the majority of powersport applications. Completely sealed after fillingNo gas emission through venting hole Superior power & extended cycle life Long shelf lifeNo need to be recharged while stocked Suitable for cold weather Reduction of plate sulfation Longer voltage hold