SMF Lead Battery SMF Lead Battery Sealed Maintenance Free Lead Acid Battery Key Features Sealed Construction Ensures Non-Spillable Design. 01 Maintenance-Free Operation For Convenience. 02 High-Purity Calcium Alloy For Extended Lifespan. 03 Long Service Life For Sustained Performance. 04 Efficient Gas Absorption Enhances Performance. 05 Low Self-Discharge With Extended Self Life. 06 Wide Operating Temperature Range For Versatility. 07 Excellent High-Rate Performance For Demanding Applications. 08 Can Be Used And Recharged In Any Position. 09 Leak-Free Construction For Added Safety. 10 Manufactured In a Modern, Eco-Friendly Facility With ISO 9001 Certification. 11 CE, UL, VDS, IEC Approval Guarantees Quality And Compliance. 12