... Calcium,Lead acid Battery. 3 Long life,Powerful Design. 1,Type: Seal Maintenance Free Battery for car & truck ... & bus.2,Material:Calcium-Lead,PE separator,high pure acid.3,Long ... 7,OEM customer brand and request for free.1.Long life-PA &LAS Technology--Makes the lead ... the battery life remarkably. 2. Completely Maitenance Free ,Never need to add water--Water recombined ...